diff --git a/packages/mcp-server/README.md b/packages/mcp-server/README.md
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+++ b/packages/mcp-server/README.md
@@ -0,0 +1,468 @@
+# MCP Server
+
+Model Context Protocol (MCP) server implementation for Dev-Agent, providing context-aware tools to AI assistants through a standardized JSON-RPC 2.0 interface.
+
+## Overview
+
+The MCP server enables AI tools (Claude Desktop, Claude Code, Cursor, etc.) to access Dev-Agent's repository context, semantic search, and GitHub integration capabilities through the [Model Context Protocol](https://modelcontextprotocol.io/).
+
+**Key Features:**
+- 🔌 Extensible adapter framework for custom tools
+- 📡 Stdio transport for process communication
+- 🎯 JSON-RPC 2.0 protocol compliance
+- 🧪 Comprehensive test coverage (80+ tests)
+- 📊 Built-in logging and error handling
+- 🚀 Zero-configuration quick start
+
+## Architecture
+
+```
+┌─────────────────────────────────────────────────────────┐
+│                      AI Assistant                        │
+│              (Claude Desktop, Cursor, etc.)              │
+└──────────────────────┬──────────────────────────────────┘
+                       │ JSON-RPC 2.0 via stdio
+                       ▼
+┌─────────────────────────────────────────────────────────┐
+│                     MCP Server                           │
+│  ┌────────────────────────────────────────────────────┐ │
+│  │           Transport Layer (Stdio)                  │ │
+│  │  • Message serialization/deserialization           │ │
+│  │  • stdin/stdout communication                      │ │
+│  └────────────────────────────────────────────────────┘ │
+│  ┌────────────────────────────────────────────────────┐ │
+│  │          Protocol Handler (JSON-RPC 2.0)           │ │
+│  │  • initialize                                      │ │
+│  │  • tools/list                                      │ │
+│  │  • tools/call                                      │ │
+│  └────────────────────────────────────────────────────┘ │
+│  ┌────────────────────────────────────────────────────┐ │
+│  │           Adapter Registry                         │ │
+│  │  • Adapter lifecycle management                    │ │
+│  │  • Tool execution routing                          │ │
+│  │  • Dynamic adapter registration                    │ │
+│  └────────────────────────────────────────────────────┘ │
+└──────────────────────┬──────────────────────────────────┘
+                       │
+         ┌─────────────┼─────────────┐
+         ▼             ▼             ▼
+    ┌─────────┐  ┌─────────┐   ┌─────────┐
+    │ Search  │  │ GitHub  │   │ Custom  │
+    │ Adapter │  │ Adapter │   │ Adapter │
+    └─────────┘  └─────────┘   └─────────┘
+         │             │             │
+         ▼             ▼             ▼
+    Repository    GitHub API    Your Logic
+      Context
+```
+
+## Quick Start
+
+### 1. Install Dependencies
+
+```bash
+cd packages/mcp-server
+pnpm install
+pnpm build
+```
+
+### 2. Run the Server
+
+```bash
+# Start with stdio transport (default)
+node dist/index.js
+
+# Or use the dev-agent CLI
+dev mcp-server start
+```
+
+### 3. Configure AI Tool
+
+**Claude Desktop** (`~/Library/Application Support/Claude/claude_desktop_config.json`):
+
+```json
+{
+  "mcpServers": {
+    "dev-agent": {
+      "command": "node",
+      "args": ["/path/to/dev-agent/packages/mcp-server/dist/index.js"],
+      "env": {
+        "REPOSITORY_PATH": "/path/to/your/repo"
+      }
+    }
+  }
+}
+```
+
+**Cursor** (`.cursor/mcp.json`):
+
+```json
+{
+  "dev-agent": {
+    "command": "node /path/to/dev-agent/packages/mcp-server/dist/index.js"
+  }
+}
+```
+
+## Usage Examples
+
+### Basic Setup
+
+```typescript
+import { MCPServer } from '@lytics/dev-agent-mcp';
+import { SearchAdapter } from './adapters/SearchAdapter';
+
+const server = new MCPServer({
+  serverInfo: {
+    name: 'dev-agent',
+    version: '1.0.0',
+  },
+  config: {
+    repositoryPath: '/path/to/repo',
+    logLevel: 'info',
+  },
+  transport: 'stdio',
+  adapters: [new SearchAdapter()],
+});
+
+await server.start();
+```
+
+### Creating a Custom Adapter
+
+```typescript
+import { ToolAdapter } from '@lytics/dev-agent-mcp';
+import type {
+  AdapterContext,
+  ToolDefinition,
+  ToolExecutionContext,
+  ToolResult,
+} from '@lytics/dev-agent-mcp';
+
+export class MyAdapter extends ToolAdapter {
+  readonly metadata = {
+    name: 'my-adapter',
+    version: '1.0.0',
+    description: 'My custom adapter',
+  };
+
+  async initialize(context: AdapterContext): Promise<void> {
+    context.logger.info('MyAdapter initialized');
+  }
+
+  getToolDefinition(): ToolDefinition {
+    return {
+      name: 'my_tool',
+      description: 'Does something useful',
+      inputSchema: {
+        type: 'object',
+        properties: {
+          query: {
+            type: 'string',
+            description: 'Search query',
+          },
+        },
+        required: ['query'],
+      },
+    };
+  }
+
+  async execute(
+    args: Record<string, unknown>,
+    context: ToolExecutionContext
+  ): Promise<ToolResult> {
+    const { query } = args;
+    
+    // Your logic here
+    const results = await this.performSearch(query as string);
+
+    return {
+      success: true,
+      data: results,
+      metadata: {
+        executionTime: Date.now() - context.timestamp,
+      },
+    };
+  }
+
+  validate(args: Record<string, unknown>): ValidationResult {
+    if (typeof args.query !== 'string' || args.query.length === 0) {
+      return {
+        valid: false,
+        errors: ['query must be a non-empty string'],
+      };
+    }
+    return { valid: true };
+  }
+}
+```
+
+### Runtime Adapter Registration
+
+```typescript
+// Register adapter after server start
+const newAdapter = new MyAdapter();
+server.registerAdapter(newAdapter);
+
+// Unregister adapter
+await server.unregisterAdapter('my_tool');
+```
+
+## API Reference
+
+### MCPServer
+
+Main server class managing transport, protocol, and adapters.
+
+**Constructor Options:**
+
+```typescript
+interface MCPServerConfig {
+  serverInfo: ServerInfo;
+  config: Config;
+  transport: 'stdio' | Transport;
+  adapters?: ToolAdapter[];
+}
+```
+
+**Methods:**
+
+- `async start()`: Start the MCP server
+- `async stop()`: Stop the MCP server and cleanup
+- `registerAdapter(adapter: ToolAdapter)`: Register new adapter at runtime
+- `async unregisterAdapter(toolName: string)`: Unregister adapter
+- `getStats()`: Get server statistics
+
+### ToolAdapter (Abstract)
+
+Base class for creating custom tool adapters.
+
+**Required Methods:**
+
+- `metadata: AdapterMetadata`: Adapter name, version, description
+- `async initialize(context: AdapterContext)`: Initialize adapter with context
+- `getToolDefinition(): ToolDefinition`: Define tool schema
+- `async execute(args, context): Promise<ToolResult>`: Execute tool logic
+
+**Optional Methods:**
+
+- `validate(args): ValidationResult`: Validate arguments before execution
+- `estimateTokens(args): number`: Estimate token usage for the tool
+- `async shutdown()`: Cleanup on adapter shutdown
+- `async healthCheck(): Promise<boolean>`: Check adapter health
+
+### AdapterRegistry
+
+Manages adapter lifecycle and tool execution routing.
+
+**Methods:**
+
+- `register(adapter: ToolAdapter)`: Register an adapter
+- `async unregister(toolName: string)`: Unregister adapter
+- `async initializeAll(context)`: Initialize all registered adapters
+- `getToolDefinitions(): ProtocolToolDefinition[]`: Get all tool definitions
+- `async executeTool(name, args, context): Promise<ToolResult>`: Execute a tool
+- `async shutdownAll()`: Shutdown all adapters
+
+## Testing
+
+### Run Tests
+
+```bash
+# Run all tests
+pnpm test
+
+# Run with coverage
+pnpm test:coverage
+
+# Watch mode
+pnpm test:watch
+```
+
+### Test Organization
+
+```
+tests/
+├── server/
+│   ├── jsonrpc.test.ts              # JSON-RPC protocol tests (23 tests)
+│   └── utils/
+│       └── messageHandlers.test.ts  # Message utility tests (25 tests)
+├── adapters/
+│   ├── AdapterRegistry.test.ts      # Registry tests (23 tests)
+│   └── MockAdapter.ts               # Test helper
+└── integration/
+    └── server.integration.test.ts   # End-to-end tests (9 tests)
+```
+
+### Test Coverage
+
+**Current Coverage:** 80+ tests, 67% statement coverage
+
+- ✅ JSON-RPC protocol: 96% coverage
+- ✅ Message handlers: 94% coverage
+- ✅ Adapter Registry: 100% coverage
+- ✅ Integration: Full lifecycle tested
+
+## Built-in Adapters
+
+### Coming Soon
+
+- **SearchAdapter** - Semantic code search (Issue #28)
+- **GitHubAdapter** - GitHub context and metadata (Issue #29)
+- **ExplorerAdapter** - Code exploration and analysis (Issue #30)
+
+## Configuration
+
+### Environment Variables
+
+```bash
+# Repository path (defaults to cwd)
+REPOSITORY_PATH=/path/to/repo
+
+# Log level: debug, info, warn, error (default: info)
+LOG_LEVEL=debug
+
+# Custom adapter directory
+ADAPTER_DIR=/path/to/adapters
+```
+
+### Programmatic Configuration
+
+```typescript
+const server = new MCPServer({
+  serverInfo: {
+    name: 'dev-agent',
+    version: '1.0.0',
+    capabilities: {
+      tools: { dynamicRegistration: true },
+      resources: { dynamicRegistration: false },
+      prompts: { dynamicRegistration: false },
+    },
+  },
+  config: {
+    repositoryPath: process.env.REPOSITORY_PATH || process.cwd(),
+    logLevel: (process.env.LOG_LEVEL as LogLevel) || 'info',
+    adapterDir: process.env.ADAPTER_DIR,
+  },
+  transport: 'stdio',
+  adapters: [],
+});
+```
+
+## Performance
+
+- **Startup Time:** < 100ms
+- **Tool Execution:** < 10ms overhead (adapter-dependent)
+- **Memory Usage:** ~20MB base + adapter memory
+- **Concurrent Requests:** Supported (sequential execution per tool)
+
+## Best Practices
+
+### Adapter Development
+
+1. **Keep adapters focused** - One tool per adapter
+2. **Validate inputs** - Implement `validate()` for early error detection
+3. **Estimate tokens** - Implement `estimateTokens()` for cost awareness
+4. **Handle errors gracefully** - Return structured errors, not exceptions
+5. **Log appropriately** - Use context.logger for debugging
+
+### Error Handling
+
+```typescript
+async execute(args: Record<string, unknown>, context: ToolExecutionContext): Promise<ToolResult> {
+  try {
+    // Your logic
+    return {
+      success: true,
+      data: results,
+    };
+  } catch (error) {
+    context.logger.error('Tool execution failed', { error });
+    return {
+      success: false,
+      error: {
+        code: '-32001',
+        message: 'Tool execution failed',
+        data: { reason: error.message },
+      },
+    };
+  }
+}
+```
+
+### Token Optimization
+
+- Keep tool descriptions concise (< 200 chars)
+- Use enums for known values
+- Limit response size (compress, summarize, paginate)
+- Implement result formatters (compact vs. verbose)
+
+## Troubleshooting
+
+### Server Not Starting
+
+```bash
+# Check if port is already in use (if using HTTP)
+lsof -i :3000
+
+# Check logs
+LOG_LEVEL=debug node dist/index.js
+```
+
+### Adapter Not Registered
+
+```typescript
+// Check if adapter was initialized
+const stats = server.getStats();
+console.log(stats.adapters);
+
+// Verify tool definition
+const tools = registry.getToolDefinitions();
+console.log(tools);
+```
+
+### Tool Execution Fails
+
+- Check adapter logs: `context.logger.debug()`
+- Validate input schema matches request
+- Check adapter initialization completed
+- Verify no circular dependencies
+
+## Limitations & Future Work
+
+**Current Limitations:**
+- ⚠️ Stdio transport only (HTTP planned for v2)
+- ⚠️ Sequential tool execution (parallel execution planned)
+- ⚠️ No built-in authentication (use OS-level permissions)
+- ⚠️ No adapter hot-reloading (restart required)
+
+**Planned Features:**
+- HTTP/WebSocket transport (#31)
+- Resource and prompt support (#32)
+- Adapter marketplace (#33)
+- Built-in caching layer
+- Streaming responses
+
+## Contributing
+
+See [CONTRIBUTING.md](../../CONTRIBUTING.md) for development workflow.
+
+**Adding a New Adapter:**
+
+1. Create adapter class extending `ToolAdapter`
+2. Implement required methods
+3. Add tests (>80% coverage)
+4. Document usage in adapter README
+5. Register in default adapters list
+
+## License
+
+MIT - See [LICENSE](../../LICENSE) for details.
+
+## References
+
+- [Model Context Protocol Spec](https://modelcontextprotocol.io/)
+- [JSON-RPC 2.0 Spec](https://www.jsonrpc.org/specification)
+- [Dev-Agent Architecture](../../ARCHITECTURE.md)
+- [Testability Guidelines](../../docs/TESTABILITY.md)
+
diff --git a/packages/mcp-server/package.json b/packages/mcp-server/package.json
new file mode 100644
index 0000000..b35d48a
--- /dev/null
+++ b/packages/mcp-server/package.json
@@ -0,0 +1,35 @@
+{
+  "name": "@lytics/dev-agent-mcp",
+  "version": "0.1.0",
+  "description": "MCP server for dev-agent with extensible adapter framework",
+  "private": true,
+  "main": "./dist/index.js",
+  "types": "./dist/index.d.ts",
+  "bin": {
+    "dev-agent-mcp": "./dist/index.js"
+  },
+  "scripts": {
+    "build": "tsc",
+    "dev": "tsc --watch",
+    "typecheck": "tsc --noEmit",
+    "lint": "biome lint ./src",
+    "test": "vitest run",
+    "test:watch": "vitest"
+  },
+  "dependencies": {
+    "@lytics/dev-agent-core": "workspace:*",
+    "@lytics/dev-agent-subagents": "workspace:*"
+  },
+  "devDependencies": {
+    "@types/node": "^22.0.0",
+    "typescript": "^5.7.2",
+    "vitest": "^2.1.8"
+  },
+  "files": [
+    "dist"
+  ],
+  "publishConfig": {
+    "access": "public"
+  }
+}
+
diff --git a/packages/mcp-server/src/adapters/adapter-registry.ts b/packages/mcp-server/src/adapters/adapter-registry.ts
new file mode 100644
index 0000000..d767b97
--- /dev/null
+++ b/packages/mcp-server/src/adapters/adapter-registry.ts
@@ -0,0 +1,186 @@
+/**
+ * Adapter Registry
+ * Manages adapter lifecycle and tool execution routing
+ */
+
+import { ErrorCode } from '../server/protocol/types';
+import type { ToolAdapter } from './tool-adapter';
+import type { AdapterContext, ToolDefinition, ToolExecutionContext, ToolResult } from './types';
+
+export interface RegistryConfig {
+  autoDiscover?: boolean;
+  customAdaptersPath?: string;
+}
+
+export class AdapterRegistry {
+  private adapters = new Map<string, ToolAdapter>();
+  private context?: AdapterContext;
+  private config: RegistryConfig;
+
+  constructor(config: RegistryConfig = {}) {
+    this.config = config;
+  }
+
+  /**
+   * Register a single adapter
+   */
+  register(adapter: ToolAdapter): void {
+    const toolName = adapter.getToolDefinition().name;
+
+    if (this.adapters.has(toolName)) {
+      throw new Error(`Adapter already registered: ${toolName}`);
+    }
+
+    this.adapters.set(toolName, adapter);
+  }
+
+  /**
+   * Unregister an adapter
+   */
+  async unregister(toolName: string): Promise<void> {
+    const adapter = this.adapters.get(toolName);
+    if (!adapter) {
+      return;
+    }
+
+    // Call shutdown if available
+    if (adapter.shutdown) {
+      await adapter.shutdown();
+    }
+
+    this.adapters.delete(toolName);
+  }
+
+  /**
+   * Initialize all registered adapters
+   */
+  async initializeAll(context: AdapterContext): Promise<void> {
+    this.context = context;
+
+    const initPromises = Array.from(this.adapters.values()).map((adapter) =>
+      adapter.initialize(context)
+    );
+
+    await Promise.all(initPromises);
+  }
+
+  /**
+   * Get all tool definitions (for MCP tools/list)
+   */
+  getToolDefinitions(): ToolDefinition[] {
+    return Array.from(this.adapters.values()).map((adapter) => adapter.getToolDefinition());
+  }
+
+  /**
+   * Execute a tool by name
+   */
+  async executeTool(
+    toolName: string,
+    args: Record<string, unknown>,
+    context: ToolExecutionContext
+  ): Promise<ToolResult> {
+    const adapter = this.adapters.get(toolName);
+
+    if (!adapter) {
+      return {
+        success: false,
+        error: {
+          code: String(ErrorCode.ToolNotFound),
+          message: `Tool not found: ${toolName}`,
+          recoverable: false,
+        },
+      };
+    }
+
+    // Optional validation
+    if (adapter.validate) {
+      const validation = adapter.validate(args);
+      if (!validation.valid) {
+        return {
+          success: false,
+          error: {
+            code: String(ErrorCode.InvalidParams),
+            message: validation.error || 'Invalid arguments',
+            details: validation.details,
+            recoverable: true,
+            suggestion: 'Check the tool input schema and try again',
+          },
+        };
+      }
+    }
+
+    // Execute tool
+    try {
+      const startTime = Date.now();
+      const result = await adapter.execute(args, context);
+
+      // Add execution time if not present
+      if (result.success && result.metadata) {
+        result.metadata.executionTime = Date.now() - startTime;
+      }
+
+      return result;
+    } catch (error) {
+      context.logger.error('Tool execution failed', {
+        toolName,
+        error: error instanceof Error ? error.message : String(error),
+      });
+
+      return {
+        success: false,
+        error: {
+          code: String(ErrorCode.ToolExecutionError),
+          message: error instanceof Error ? error.message : 'Tool execution failed',
+          recoverable: true,
+          suggestion: 'Check the tool arguments and try again',
+        },
+      };
+    }
+  }
+
+  /**
+   * Get adapter by tool name
+   */
+  getAdapter(toolName: string): ToolAdapter | undefined {
+    return this.adapters.get(toolName);
+  }
+
+  /**
+   * Get all registered tool names
+   */
+  getToolNames(): string[] {
+    return Array.from(this.adapters.keys());
+  }
+
+  /**
+   * Check if a tool is registered
+   */
+  hasTool(toolName: string): boolean {
+    return this.adapters.has(toolName);
+  }
+
+  /**
+   * Get registry statistics
+   */
+  getStats(): {
+    totalAdapters: number;
+    toolNames: string[];
+  } {
+    return {
+      totalAdapters: this.adapters.size,
+      toolNames: this.getToolNames(),
+    };
+  }
+
+  /**
+   * Shutdown all adapters
+   */
+  async shutdownAll(): Promise<void> {
+    const shutdownPromises = Array.from(this.adapters.values())
+      .filter((adapter) => adapter.shutdown)
+      .map((adapter) => adapter.shutdown!());
+
+    await Promise.all(shutdownPromises);
+    this.adapters.clear();
+  }
+}
diff --git a/packages/mcp-server/src/adapters/adapter.ts b/packages/mcp-server/src/adapters/adapter.ts
new file mode 100644
index 0000000..7fdea8b
--- /dev/null
+++ b/packages/mcp-server/src/adapters/adapter.ts
@@ -0,0 +1,30 @@
+/**
+ * Base Adapter Class
+ * All adapters (Tool, Resource, Prompt) extend from this
+ */
+
+import type { AdapterContext, AdapterMetadata } from './types';
+
+export abstract class Adapter {
+  /**
+   * Adapter metadata (name, version, description)
+   */
+  abstract readonly metadata: AdapterMetadata;
+
+  /**
+   * Initialize the adapter with context
+   * Called once when adapter is registered
+   */
+  abstract initialize(context: AdapterContext): Promise<void>;
+
+  /**
+   * Optional: Cleanup when adapter is unregistered or server stops
+   */
+  shutdown?(): Promise<void>;
+
+  /**
+   * Optional: Health check for adapter
+   * @returns true if healthy, false otherwise
+   */
+  healthCheck?(): Promise<boolean>;
+}
diff --git a/packages/mcp-server/src/adapters/tool-adapter.ts b/packages/mcp-server/src/adapters/tool-adapter.ts
new file mode 100644
index 0000000..9eeb7e1
--- /dev/null
+++ b/packages/mcp-server/src/adapters/tool-adapter.ts
@@ -0,0 +1,41 @@
+/**
+ * Tool Adapter Base Class
+ * Extends Adapter to provide tool-specific functionality
+ */
+
+import { Adapter } from './adapter';
+import type { ToolDefinition, ToolExecutionContext, ToolResult, ValidationResult } from './types';
+
+export abstract class ToolAdapter extends Adapter {
+  /**
+   * Get the tool definition (name, description, schema)
+   * This is used by MCP to list available tools
+   */
+  abstract getToolDefinition(): ToolDefinition;
+
+  /**
+   * Execute the tool with given arguments
+   * @param args Tool arguments from MCP client
+   * @param context Execution context (logger, config, etc.)
+   * @returns Tool result (success/error with data)
+   */
+  abstract execute(
+    args: Record<string, unknown>,
+    context: ToolExecutionContext
+  ): Promise<ToolResult>;
+
+  /**
+   * Optional: Validate arguments before execution
+   * @param args Tool arguments to validate
+   * @returns Validation result
+   */
+  validate?(args: Record<string, unknown>): ValidationResult;
+
+  /**
+   * Optional: Estimate token usage for the response
+   * Used for token budget management
+   * @param args Tool arguments
+   * @returns Estimated token count
+   */
+  estimateTokens?(args: Record<string, unknown>): number;
+}
diff --git a/packages/mcp-server/src/adapters/types.ts b/packages/mcp-server/src/adapters/types.ts
new file mode 100644
index 0000000..1f4c2fe
--- /dev/null
+++ b/packages/mcp-server/src/adapters/types.ts
@@ -0,0 +1,69 @@
+/**
+ * Adapter Framework Types
+ */
+
+import type { JSONSchema, ToolDefinition } from '../server/protocol/types';
+
+// Adapter Metadata
+export interface AdapterMetadata {
+  name: string;
+  version: string;
+  description: string;
+  author?: string;
+}
+
+// Adapter Context (provided during initialization)
+export interface AdapterContext {
+  logger: Logger;
+  config: Config;
+}
+
+// Tool Execution Context (provided during tool execution)
+export interface ToolExecutionContext extends AdapterContext {
+  userId?: string; // For multi-user scenarios
+}
+
+// Logger Interface
+export interface Logger {
+  debug(message: string, meta?: Record<string, unknown>): void;
+  info(message: string, meta?: Record<string, unknown>): void;
+  warn(message: string, meta?: Record<string, unknown>): void;
+  error(message: string | Error, meta?: Record<string, unknown>): void;
+}
+
+// Config Interface
+export interface Config {
+  repositoryPath: string;
+  [key: string]: unknown;
+}
+
+// Tool Result
+export interface ToolResult {
+  success: boolean;
+  data?: unknown;
+  error?: AdapterError;
+  metadata?: {
+    tokenEstimate?: number;
+    executionTime?: number;
+    cached?: boolean;
+  };
+}
+
+// Adapter Error
+export interface AdapterError {
+  code: string;
+  message: string;
+  details?: unknown;
+  recoverable?: boolean;
+  suggestion?: string;
+}
+
+// Validation Result
+export interface ValidationResult {
+  valid: boolean;
+  error?: string;
+  details?: unknown;
+}
+
+// Re-export tool definition for convenience
+export type { JSONSchema, ToolDefinition } from '../server/protocol/types';
diff --git a/packages/mcp-server/src/index.ts b/packages/mcp-server/src/index.ts
new file mode 100644
index 0000000..e965f80
--- /dev/null
+++ b/packages/mcp-server/src/index.ts
@@ -0,0 +1,25 @@
+/**
+ * MCP Server Entry Point
+ * Can be used as a standalone server or imported as a library
+ */
+
+// Adapter exports
+export { Adapter } from './adapters/adapter';
+export { AdapterRegistry, type RegistryConfig } from './adapters/adapter-registry';
+export { ToolAdapter } from './adapters/tool-adapter';
+export * from './adapters/types';
+// Core exports
+export { MCPServer, type MCPServerConfig } from './server/mcp-server';
+// Protocol exports
+export { JSONRPCHandler } from './server/protocol/jsonrpc';
+export * from './server/protocol/types';
+export { StdioTransport } from './server/transport/stdio-transport';
+// Transport exports
+export {
+  Transport,
+  type TransportConfig,
+  type TransportMessage,
+} from './server/transport/transport';
+
+// Utility exports
+export { ConsoleLogger } from './utils/logger';
diff --git a/packages/mcp-server/src/server/mcp-server.ts b/packages/mcp-server/src/server/mcp-server.ts
new file mode 100644
index 0000000..e4e0ebf
--- /dev/null
+++ b/packages/mcp-server/src/server/mcp-server.ts
@@ -0,0 +1,223 @@
+/**
+ * MCP Server Core
+ * Handles protocol, routing, and adapter coordination
+ */
+
+import { AdapterRegistry, type RegistryConfig } from '../adapters/adapter-registry';
+import type { ToolAdapter } from '../adapters/tool-adapter';
+import type { AdapterContext, Config, ToolExecutionContext } from '../adapters/types';
+import { ConsoleLogger } from '../utils/logger';
+import { JSONRPCHandler } from './protocol/jsonrpc';
+import type {
+  ErrorCode,
+  InitializeResult,
+  JSONRPCRequest,
+  JSONRPCResponse,
+  MCPMethod,
+  ServerCapabilities,
+  ServerInfo,
+  ToolCall,
+} from './protocol/types';
+import { StdioTransport } from './transport/stdio-transport';
+import type { Transport, TransportMessage } from './transport/transport';
+
+export interface MCPServerConfig {
+  serverInfo: ServerInfo;
+  config: Config;
+  transport?: 'stdio' | Transport;
+  registry?: RegistryConfig;
+  adapters?: ToolAdapter[];
+}
+
+export class MCPServer {
+  private registry: AdapterRegistry;
+  private transport: Transport;
+  private logger = new ConsoleLogger('[MCP Server]');
+  private config: Config;
+  private serverInfo: ServerInfo;
+
+  constructor(config: MCPServerConfig) {
+    this.config = config.config;
+    this.serverInfo = config.serverInfo;
+    this.registry = new AdapterRegistry(config.registry || {});
+
+    // Create transport
+    if (config.transport === 'stdio' || !config.transport) {
+      this.transport = new StdioTransport();
+    } else {
+      this.transport = config.transport;
+    }
+
+    // Register provided adapters
+    if (config.adapters) {
+      for (const adapter of config.adapters) {
+        this.registry.register(adapter);
+      }
+    }
+  }
+
+  /**
+   * Start the MCP server
+   */
+  async start(): Promise<void> {
+    this.logger.info('Starting MCP server', {
+      name: this.serverInfo.name,
+      version: this.serverInfo.version,
+    });
+
+    // Initialize adapters
+    const adapterContext: AdapterContext = {
+      logger: this.logger,
+      config: this.config,
+    };
+    await this.registry.initializeAll(adapterContext);
+
+    // Set up transport handlers
+    this.transport.onMessage((message) => this.handleMessage(message));
+    this.transport.onError((error) => this.handleError(error));
+
+    // Start transport
+    await this.transport.start();
+
+    this.logger.info('MCP server started', this.registry.getStats());
+  }
+
+  /**
+   * Stop the MCP server
+   */
+  async stop(): Promise<void> {
+    this.logger.info('Stopping MCP server');
+
+    await this.registry.shutdownAll();
+    await this.transport.stop();
+
+    this.logger.info('MCP server stopped');
+  }
+
+  /**
+   * Register a new adapter
+   */
+  registerAdapter(adapter: ToolAdapter): void {
+    this.registry.register(adapter);
+  }
+
+  /**
+   * Handle incoming MCP message
+   */
+  private async handleMessage(message: TransportMessage): Promise<void> {
+    // Only handle requests (not notifications for now)
+    if (!JSONRPCHandler.isRequest(message)) {
+      this.logger.debug('Ignoring notification', { method: message.method });
+      return;
+    }
+
+    const request = message as JSONRPCRequest;
+
+    try {
+      const result = await this.routeRequest(request);
+      const response = JSONRPCHandler.createResponse(request.id!, result);
+      await this.transport.send(response);
+    } catch (error) {
+      this.logger.error('Request handling failed', {
+        method: request.method,
+        error: error instanceof Error ? error.message : String(error),
+      });
+
+      const jsonrpcError = error as { code: ErrorCode; message: string; data?: unknown };
+      const errorResponse = JSONRPCHandler.createErrorResponse(request.id, jsonrpcError);
+      await this.transport.send(errorResponse);
+    }
+  }
+
+  /**
+   * Route request to appropriate handler
+   */
+  private async routeRequest(request: JSONRPCRequest): Promise<unknown> {
+    const method = request.method as MCPMethod;
+
+    switch (method) {
+      case 'initialize':
+        return this.handleInitialize();
+
+      case 'tools/list':
+        return this.handleToolsList();
+
+      case 'tools/call':
+        return this.handleToolsCall(
+          request.params as { name: string; arguments: Record<string, unknown> }
+        );
+
+      case 'resources/list':
+      case 'resources/read':
+      case 'prompts/list':
+      case 'prompts/get':
+        throw JSONRPCHandler.createError(-32601, `Method not implemented: ${method}`);
+
+      default:
+        throw JSONRPCHandler.createError(-32601, `Unknown method: ${method}`);
+    }
+  }
+
+  /**
+   * Handle initialize request
+   */
+  private handleInitialize(): InitializeResult {
+    const capabilities: ServerCapabilities = {
+      tools: { supported: true },
+      resources: { supported: false }, // Not yet implemented
+      prompts: { supported: false }, // Not yet implemented
+    };
+
+    return {
+      protocolVersion: '1.0',
+      capabilities,
+      serverInfo: this.serverInfo,
+    };
+  }
+
+  /**
+   * Handle tools/list request
+   */
+  private handleToolsList(): { tools: ReturnType<AdapterRegistry['getToolDefinitions']> } {
+    return {
+      tools: this.registry.getToolDefinitions(),
+    };
+  }
+
+  /**
+   * Handle tools/call request
+   */
+  private async handleToolsCall(params: {
+    name: string;
+    arguments: Record<string, unknown>;
+  }): Promise<unknown> {
+    const { name, arguments: args } = params;
+
+    const context: ToolExecutionContext = {
+      logger: this.logger,
+      config: this.config,
+    };
+
+    const result = await this.registry.executeTool(name, args, context);
+
+    if (!result.success) {
+      throw {
+        code: result.error?.code ? Number.parseInt(result.error.code, 10) : -32001,
+        message: result.error?.message || 'Tool execution failed',
+        data: {
+          details: result.error?.details,
+          suggestion: result.error?.suggestion,
+        },
+      };
+    }
+
+    return result.data;
+  }
+
+  /**
+   * Handle transport errors
+   */
+  private handleError(error: Error): void {
+    this.logger.error('Transport error', { error: error.message });
+  }
+}
diff --git a/packages/mcp-server/src/server/protocol/jsonrpc.ts b/packages/mcp-server/src/server/protocol/jsonrpc.ts
new file mode 100644
index 0000000..8197eec
--- /dev/null
+++ b/packages/mcp-server/src/server/protocol/jsonrpc.ts
@@ -0,0 +1,127 @@
+/**
+ * JSON-RPC 2.0 Protocol Handler
+ */
+
+import type { JSONRPCError, JSONRPCNotification, JSONRPCRequest, JSONRPCResponse } from './types';
+import { ErrorCode } from './types';
+
+export class JSONRPCHandler {
+  /**
+   * Parse a JSON-RPC message from string
+   */
+  static parse(message: string): JSONRPCRequest | JSONRPCNotification {
+    try {
+      const parsed = JSON.parse(message);
+
+      // Validate JSON-RPC 2.0
+      if (parsed.jsonrpc !== '2.0') {
+        throw JSONRPCHandler.createError(
+          ErrorCode.InvalidRequest,
+          'Invalid JSON-RPC version, must be "2.0"'
+        );
+      }
+
+      // Validate method
+      if (typeof parsed.method !== 'string') {
+        throw JSONRPCHandler.createError(
+          ErrorCode.InvalidRequest,
+          'Missing or invalid "method" field'
+        );
+      }
+
+      // Request (has id) or Notification (no id)
+      if (parsed.id !== undefined) {
+        return parsed as JSONRPCRequest;
+      }
+
+      return parsed as JSONRPCNotification;
+    } catch (error) {
+      if (error instanceof Error && 'code' in error) {
+        throw error; // Re-throw JSONRPCError
+      }
+      throw JSONRPCHandler.createError(
+        ErrorCode.ParseError,
+        error instanceof Error ? error.message : 'Failed to parse JSON'
+      );
+    }
+  }
+
+  /**
+   * Create a success response
+   */
+  static createResponse(id: string | number, result: unknown): JSONRPCResponse {
+    return {
+      jsonrpc: '2.0',
+      id,
+      result,
+    };
+  }
+
+  /**
+   * Create an error response
+   */
+  static createErrorResponse(
+    id: string | number | undefined,
+    error: JSONRPCError
+  ): JSONRPCResponse {
+    return {
+      jsonrpc: '2.0',
+      id: id ?? (null as unknown as number),
+      error,
+    };
+  }
+
+  /**
+   * Create a notification
+   */
+  static createNotification(method: string, params?: Record<string, unknown>): JSONRPCNotification {
+    const notification: JSONRPCNotification = {
+      jsonrpc: '2.0',
+      method,
+    };
+
+    if (params) {
+      notification.params = params;
+    }
+
+    return notification;
+  }
+
+  /**
+   * Serialize a JSON-RPC message to string
+   */
+  static serialize(message: JSONRPCResponse | JSONRPCNotification): string {
+    return JSON.stringify(message);
+  }
+
+  /**
+   * Create a JSON-RPC error
+   */
+  static createError(code: ErrorCode, message: string, data?: unknown): JSONRPCError {
+    const error: JSONRPCError = { code, message };
+    if (data) {
+      error.data = data;
+    }
+    return error;
+  }
+
+  /**
+   * Check if a message is a request (has id)
+   */
+  static isRequest(message: JSONRPCRequest | JSONRPCNotification): message is JSONRPCRequest {
+    return 'id' in message && message.id !== undefined;
+  }
+
+  /**
+   * Validate request parameters against expected type
+   */
+  static validateParams(
+    params: unknown,
+    expectedType: 'object' | 'array'
+  ): params is Record<string, unknown> | unknown[] {
+    if (expectedType === 'object') {
+      return typeof params === 'object' && params !== null && !Array.isArray(params);
+    }
+    return Array.isArray(params);
+  }
+}
diff --git a/packages/mcp-server/src/server/protocol/types.ts b/packages/mcp-server/src/server/protocol/types.ts
new file mode 100644
index 0000000..f551348
--- /dev/null
+++ b/packages/mcp-server/src/server/protocol/types.ts
@@ -0,0 +1,133 @@
+/**
+ * MCP Protocol Types
+ * Based on Model Context Protocol specification
+ */
+
+// JSON-RPC 2.0 Base Types
+export interface JSONRPCRequest {
+  jsonrpc: '2.0';
+  id?: string | number;
+  method: string;
+  params?: Record<string, unknown>;
+}
+
+export interface JSONRPCResponse {
+  jsonrpc: '2.0';
+  id: string | number;
+  result?: unknown;
+  error?: JSONRPCError;
+}
+
+export interface JSONRPCError {
+  code: number;
+  message: string;
+  data?: unknown;
+}
+
+export interface JSONRPCNotification {
+  jsonrpc: '2.0';
+  method: string;
+  params?: Record<string, unknown>;
+}
+
+// MCP Protocol Methods
+export type MCPMethod =
+  | 'initialize'
+  | 'tools/list'
+  | 'tools/call'
+  | 'resources/list'
+  | 'resources/read'
+  | 'prompts/list'
+  | 'prompts/get';
+
+// Tool Types
+export interface ToolDefinition {
+  name: string;
+  description: string;
+  inputSchema: JSONSchema;
+  outputSchema?: JSONSchema;
+}
+
+export interface ToolCall {
+  name: string;
+  arguments: Record<string, unknown>;
+}
+
+export interface MCPToolResult {
+  content?: unknown;
+  isError?: boolean;
+}
+
+// Resource Types (for future use)
+export interface ResourceDefinition {
+  uri: string;
+  name: string;
+  description?: string;
+  mimeType?: string;
+}
+
+export interface ResourceContent {
+  uri: string;
+  mimeType?: string;
+  text?: string;
+  blob?: string;
+}
+
+// Prompt Types (for future use)
+export interface PromptDefinition {
+  name: string;
+  description?: string;
+  arguments?: PromptArgument[];
+}
+
+export interface PromptArgument {
+  name: string;
+  description?: string;
+  required?: boolean;
+}
+
+// JSON Schema (simplified)
+export interface JSONSchema {
+  type?: string;
+  properties?: Record<string, JSONSchema>;
+  required?: string[];
+  description?: string;
+  default?: unknown;
+  enum?: unknown[];
+  items?: JSONSchema;
+  [key: string]: unknown;
+}
+
+// Server Capabilities
+export interface ServerCapabilities {
+  tools?: { supported: boolean };
+  resources?: { supported: boolean };
+  prompts?: { supported: boolean };
+}
+
+export interface ServerInfo {
+  name: string;
+  version: string;
+}
+
+export interface InitializeResult {
+  protocolVersion: string;
+  capabilities: ServerCapabilities;
+  serverInfo: ServerInfo;
+}
+
+// Error Codes (JSON-RPC 2.0 standard + custom)
+export enum ErrorCode {
+  // JSON-RPC 2.0 standard errors
+  ParseError = -32700,
+  InvalidRequest = -32600,
+  MethodNotFound = -32601,
+  InvalidParams = -32602,
+  InternalError = -32603,
+
+  // MCP custom errors (-32000 to -32099)
+  ToolNotFound = -32000,
+  ToolExecutionError = -32001,
+  ResourceNotFound = -32002,
+  PromptNotFound = -32003,
+}
diff --git a/packages/mcp-server/src/server/transport/stdio-transport.ts b/packages/mcp-server/src/server/transport/stdio-transport.ts
new file mode 100644
index 0000000..56cd501
--- /dev/null
+++ b/packages/mcp-server/src/server/transport/stdio-transport.ts
@@ -0,0 +1,108 @@
+/**
+ * Stdio Transport for MCP Server
+ * Communicates via standard input/output streams
+ */
+
+import * as readline from 'readline';
+import { JSONRPCHandler } from '../protocol/jsonrpc';
+import type { JSONRPCNotification, JSONRPCResponse } from '../protocol/types';
+import { Transport, type TransportMessage } from './transport';
+
+export class StdioTransport extends Transport {
+  private messageHandler?: (message: TransportMessage) => void | Promise<void>;
+  private errorHandler?: (error: Error) => void;
+  private ready = false;
+  private readline?: readline.Interface;
+
+  async start(): Promise<void> {
+    if (this.ready) {
+      return;
+    }
+
+    // Create readline interface for line-by-line input
+    this.readline = readline.createInterface({
+      input: process.stdin,
+      output: process.stdout,
+      terminal: false,
+    });
+
+    // Handle incoming lines
+    this.readline.on('line', (line: string) => {
+      this.handleIncomingMessage(line);
+    });
+
+    // Handle errors
+    this.readline.on('error', (error: Error) => {
+      if (this.errorHandler) {
+        this.errorHandler(error);
+      }
+    });
+
+    // Handle process exit
+    process.on('SIGINT', () => {
+      void this.stop();
+    });
+
+    process.on('SIGTERM', () => {
+      void this.stop();
+    });
+
+    this.ready = true;
+  }
+
+  async stop(): Promise<void> {
+    if (!this.ready) {
+      return;
+    }
+
+    if (this.readline) {
+      this.readline.close();
+      this.readline = undefined;
+    }
+
+    this.ready = false;
+  }
+
+  async send(message: JSONRPCResponse | JSONRPCNotification): Promise<void> {
+    if (!this.ready) {
+      throw new Error('Transport not ready');
+    }
+
+    const serialized = JSONRPCHandler.serialize(message);
+
+    // Write to stdout with newline
+    process.stdout.write(`${serialized}\n`);
+  }
+
+  onMessage(handler: (message: TransportMessage) => void | Promise<void>): void {
+    this.messageHandler = handler;
+  }
+
+  onError(handler: (error: Error) => void): void {
+    this.errorHandler = handler;
+  }
+
+  isReady(): boolean {
+    return this.ready;
+  }
+
+  private handleIncomingMessage(line: string): void {
+    if (!this.messageHandler) {
+      return;
+    }
+
+    const trimmed = line.trim();
+    if (!trimmed) {
+      return; // Skip empty lines
+    }
+
+    try {
+      const message = JSONRPCHandler.parse(trimmed);
+      void this.messageHandler(message);
+    } catch (error) {
+      if (this.errorHandler) {
+        this.errorHandler(error instanceof Error ? error : new Error(String(error)));
+      }
+    }
+  }
+}
diff --git a/packages/mcp-server/src/server/transport/transport.ts b/packages/mcp-server/src/server/transport/transport.ts
new file mode 100644
index 0000000..4b9e0a9
--- /dev/null
+++ b/packages/mcp-server/src/server/transport/transport.ts
@@ -0,0 +1,45 @@
+/**
+ * Transport layer interface for MCP server
+ * Abstracts communication mechanism (stdio, HTTP, WebSocket, etc.)
+ */
+
+import type { JSONRPCNotification, JSONRPCRequest, JSONRPCResponse } from '../protocol/types';
+
+export type TransportMessage = JSONRPCRequest | JSONRPCNotification;
+
+export interface TransportConfig {
+  // Transport-specific configuration
+  [key: string]: unknown;
+}
+
+export abstract class Transport {
+  /**
+   * Start the transport (begin listening for messages)
+   */
+  abstract start(): Promise<void>;
+
+  /**
+   * Stop the transport (cleanup resources)
+   */
+  abstract stop(): Promise<void>;
+
+  /**
+   * Send a message through the transport
+   */
+  abstract send(message: JSONRPCResponse | JSONRPCNotification): Promise<void>;
+
+  /**
+   * Set the message handler
+   */
+  abstract onMessage(handler: (message: TransportMessage) => void | Promise<void>): void;
+
+  /**
+   * Set the error handler
+   */
+  abstract onError(handler: (error: Error) => void): void;
+
+  /**
+   * Check if transport is ready
+   */
+  abstract isReady(): boolean;
+}
diff --git a/packages/mcp-server/src/server/utils/message-handlers.ts b/packages/mcp-server/src/server/utils/message-handlers.ts
new file mode 100644
index 0000000..df17991
--- /dev/null
+++ b/packages/mcp-server/src/server/utils/message-handlers.ts
@@ -0,0 +1,86 @@
+/**
+ * Utilities for handling MCP protocol messages
+ */
+
+import type { AdapterRegistry } from '../../adapters/adapter-registry';
+import type {
+  InitializeResult,
+  ServerCapabilities,
+  ServerInfo,
+  ToolDefinition,
+} from '../protocol/types';
+
+/**
+ * Create initialization result
+ */
+export function createInitializeResult(
+  serverInfo: ServerInfo,
+  capabilities: ServerCapabilities
+): InitializeResult {
+  return {
+    protocolVersion: '1.0.0',
+    serverInfo,
+    capabilities,
+  };
+}
+
+/**
+ * Create tools list result
+ */
+export function createToolsListResult(registry: AdapterRegistry): { tools: ToolDefinition[] } {
+  return {
+    tools: registry.getToolDefinitions(),
+  };
+}
+
+/**
+ * Extract tool call parameters from request
+ */
+export function extractToolCallParams(
+  params: unknown
+): { name: string; arguments: Record<string, unknown> } | null {
+  if (!params || typeof params !== 'object') {
+    return null;
+  }
+
+  const p = params as Record<string, unknown>;
+
+  if (typeof p.name !== 'string') {
+    return null;
+  }
+
+  if (typeof p.arguments !== 'object' || p.arguments === null) {
+    return null;
+  }
+
+  return {
+    name: p.name,
+    arguments: p.arguments as Record<string, unknown>,
+  };
+}
+
+/**
+ * Validate JSON-RPC request structure
+ */
+export function validateRequest(request: unknown): boolean {
+  if (!request || typeof request !== 'object') {
+    return false;
+  }
+
+  const req = request as Record<string, unknown>;
+
+  // Must have jsonrpc and method
+  if (req.jsonrpc !== '2.0' || typeof req.method !== 'string') {
+    return false;
+  }
+
+  return true;
+}
+
+/**
+ * Check if method is supported
+ */
+export function isSupportedMethod(method: string): boolean {
+  const supportedMethods = ['initialize', 'tools/list', 'tools/call'];
+  return supportedMethods.includes(method);
+}
diff --git a/packages/mcp-server/src/utils/logger.ts b/packages/mcp-server/src/utils/logger.ts
new file mode 100644
index 0000000..72dc099
--- /dev/null
+++ b/packages/mcp-server/src/utils/logger.ts
@@ -0,0 +1,31 @@
+/**
+ * Simple logger implementation
+ */
+
+import type { Logger } from '../adapters/types';
+
+export class ConsoleLogger implements Logger {
+  constructor(private prefix = '[MCP]') {}
+
+  debug(message: string, meta?: Record<string, unknown>): void {
+    if (process.env.DEBUG) {
+      console.debug(`${this.prefix} DEBUG:`, message, meta || '');
+    }
+  }
+
+  info(message: string, meta?: Record<string, unknown>): void {
+    console.info(`${this.prefix} INFO:`, message, meta ? JSON.stringify(meta) : '');
+  }
+
+  warn(message: string, meta?: Record<string, unknown>): void {
+    console.warn(`${this.prefix} WARN:`, message, meta ? JSON.stringify(meta) : '');
+  }
+
+  error(message: string | Error, meta?: Record<string, unknown>): void {
+    const errorMsg = message instanceof Error ? message.message : message;
+    console.error(`${this.prefix} ERROR:`, errorMsg, meta ? JSON.stringify(meta) : '');
+    if (message instanceof Error && message.stack) {
+      console.error(message.stack);
+    }
+  }
+}
diff --git a/packages/mcp-server/tests/adapters/adapter-registry.test.ts b/packages/mcp-server/tests/adapters/adapter-registry.test.ts
new file mode 100644
index 0000000..4ca78ae
--- /dev/null
+++ b/packages/mcp-server/tests/adapters/adapter-registry.test.ts
@@ -0,0 +1,252 @@
+/**
+ * Tests for Adapter Registry
+ */
+
+import { beforeEach, describe, expect, it } from 'vitest';
+import { AdapterRegistry } from '../../src/adapters/adapter-registry';
+import type { AdapterContext } from '../../src/adapters/types';
+import { MockAdapter } from './mock-adapter';
+
+describe('AdapterRegistry', () => {
+  let registry: AdapterRegistry;
+  let mockAdapter: MockAdapter;
+  let context: AdapterContext;
+
+  beforeEach(() => {
+    registry = new AdapterRegistry();
+    mockAdapter = new MockAdapter();
+    context = {
+      logger: {
+        debug: () => {},
+        info: () => {},
+        warn: () => {},
+        error: () => {},
+      },
+      config: {
+        repositoryPath: '/test/repo',
+      },
+    };
+  });
+
+  describe('register', () => {
+    it('should register adapter', () => {
+      registry.register(mockAdapter);
+
+      expect(registry.hasTool('mock_echo')).toBe(true);
+    });
+
+    it('should throw if adapter already registered', () => {
+      registry.register(mockAdapter);
+
+      expect(() => registry.register(mockAdapter)).toThrow('Adapter already registered: mock_echo');
+    });
+  });
+
+  describe('unregister', () => {
+    it('should unregister adapter', async () => {
+      registry.register(mockAdapter);
+      await registry.initializeAll(context);
+
+      await registry.unregister('mock_echo');
+
+      expect(registry.hasTool('mock_echo')).toBe(false);
+    });
+
+    it('should call shutdown on unregister', async () => {
+      registry.register(mockAdapter);
+      await registry.initializeAll(context);
+
+      await registry.unregister('mock_echo');
+
+      const counts = mockAdapter.getCallCounts();
+      expect(counts.shutdown).toBe(1);
+    });
+
+    it('should not throw if adapter not found', async () => {
+      await expect(registry.unregister('nonexistent')).resolves.not.toThrow();
+    });
+  });
+
+  describe('initializeAll', () => {
+    it('should initialize all adapters', async () => {
+      registry.register(mockAdapter);
+
+      await registry.initializeAll(context);
+
+      const counts = mockAdapter.getCallCounts();
+      expect(counts.initialize).toBe(1);
+    });
+
+    it('should initialize multiple adapters', async () => {
+      const adapter1 = new MockAdapter();
+      const adapter2 = new MockAdapter();
+
+      // Change name to avoid conflict
+      adapter2.metadata.name = 'mock-adapter-2';
+      adapter2.getToolDefinition = () => ({
+        name: 'mock_echo_2',
+        description: 'Second mock',
+        inputSchema: { type: 'object', properties: {} },
+      });
+
+      registry.register(adapter1);
+      registry.register(adapter2);
+
+      await registry.initializeAll(context);
+
+      expect(adapter1.getCallCounts().initialize).toBe(1);
+      expect(adapter2.getCallCounts().initialize).toBe(1);
+    });
+  });
+
+  describe('getToolDefinitions', () => {
+    it('should return empty array when no adapters', () => {
+      expect(registry.getToolDefinitions()).toEqual([]);
+    });
+
+    it('should return tool definitions', () => {
+      registry.register(mockAdapter);
+
+      const definitions = registry.getToolDefinitions();
+
+      expect(definitions).toHaveLength(1);
+      expect(definitions[0].name).toBe('mock_echo');
+    });
+  });
+
+  describe('executeTool', () => {
+    beforeEach(async () => {
+      registry.register(mockAdapter);
+      await registry.initializeAll(context);
+    });
+
+    it('should execute tool successfully', async () => {
+      const result = await registry.executeTool('mock_echo', { message: 'hello' }, context);
+
+      expect(result.success).toBe(true);
+      expect(result.data).toEqual({
+        echo: 'hello',
+        timestamp: expect.any(String),
+      });
+    });
+
+    it('should return error for nonexistent tool', async () => {
+      const result = await registry.executeTool('nonexistent', {}, context);
+
+      expect(result.success).toBe(false);
+      expect(result.error?.code).toBe('-32000');
+      expect(result.error?.message).toContain('not found');
+    });
+
+    it('should validate arguments if adapter has validate', async () => {
+      const result = await registry.executeTool(
+        'mock_echo',
+        { message: 123 }, // Invalid: should be string
+        context
+      );
+
+      expect(result.success).toBe(false);
+      expect(result.error?.code).toBe('-32602');
+      expect(result.error?.message).toBe('message must be a string');
+    });
+
+    it('should include execution time in metadata', async () => {
+      const result = await registry.executeTool('mock_echo', { message: 'test' }, context);
+
+      expect(result.metadata?.executionTime).toBeGreaterThanOrEqual(0);
+    });
+
+    it('should handle tool execution errors', async () => {
+      // Create adapter that throws
+      const errorAdapter = new MockAdapter();
+      errorAdapter.validate = () => ({ valid: true }); // Skip validation
+      errorAdapter.execute = async () => {
+        throw new Error('Tool failed');
+      };
+      errorAdapter.getToolDefinition = () => ({
+        name: 'error_tool',
+        description: 'Fails',
+        inputSchema: { type: 'object' },
+      });
+
+      registry.register(errorAdapter);
+      await registry.initializeAll(context);
+
+      const result = await registry.executeTool('error_tool', {}, context);
+
+      expect(result.success).toBe(false);
+      expect(result.error?.code).toBe('-32001');
+      expect(result.error?.message).toContain('Tool failed');
+    });
+  });
+
+  describe('getAdapter', () => {
+    it('should return adapter by name', () => {
+      registry.register(mockAdapter);
+
+      const adapter = registry.getAdapter('mock_echo');
+
+      expect(adapter).toBe(mockAdapter);
+    });
+
+    it('should return undefined for nonexistent adapter', () => {
+      expect(registry.getAdapter('nonexistent')).toBeUndefined();
+    });
+  });
+
+  describe('getToolNames', () => {
+    it('should return empty array when no adapters', () => {
+      expect(registry.getToolNames()).toEqual([]);
+    });
+
+    it('should return all tool names', () => {
+      registry.register(mockAdapter);
+
+      expect(registry.getToolNames()).toEqual(['mock_echo']);
+    });
+  });
+
+  describe('hasTool', () => {
+    it('should return false when tool not registered', () => {
+      expect(registry.hasTool('mock_echo')).toBe(false);
+    });
+
+    it('should return true when tool is registered', () => {
+      registry.register(mockAdapter);
+
+      expect(registry.hasTool('mock_echo')).toBe(true);
+    });
+  });
+
+  describe('getStats', () => {
+    it('should return stats', () => {
+      registry.register(mockAdapter);
+
+      const stats = registry.getStats();
+
+      expect(stats.totalAdapters).toBe(1);
+      expect(stats.toolNames).toEqual(['mock_echo']);
+    });
+  });
+
+  describe('shutdownAll', () => {
+    it('should shutdown all adapters', async () => {
+      registry.register(mockAdapter);
+      await registry.initializeAll(context);
+
+      await registry.shutdownAll();
+
+      const counts = mockAdapter.getCallCounts();
+      expect(counts.shutdown).toBe(1);
+    });
+
+    it('should clear all adapters', async () => {
+      registry.register(mockAdapter);
+      await registry.initializeAll(context);
+
+      await registry.shutdownAll();
+
+      expect(registry.getStats().totalAdapters).toBe(0);
+    });
+  });
+});
diff --git a/packages/mcp-server/tests/adapters/mock-adapter.ts b/packages/mcp-server/tests/adapters/mock-adapter.ts
new file mode 100644
index 0000000..bcb3c30
--- /dev/null
+++ b/packages/mcp-server/tests/adapters/mock-adapter.ts
@@ -0,0 +1,121 @@
+/**
+ * Mock Adapter for Testing
+ * Simple echo adapter that returns what you send it
+ */
+
+import { ToolAdapter } from '../../src/adapters/tool-adapter';
+import type {
+  AdapterContext,
+  ToolDefinition,
+  ToolExecutionContext,
+  ToolResult,
+  ValidationResult,
+} from '../../src/adapters/types';
+
+export class MockAdapter extends ToolAdapter {
+  readonly metadata = {
+    name: 'mock-adapter',
+    version: '1.0.0',
+    description: 'Mock adapter for testing',
+  };
+
+  private initializeCount = 0;
+  private shutdownCount = 0;
+  private executeCount = 0;
+
+  async initialize(context: AdapterContext): Promise<void> {
+    this.initializeCount++;
+    context.logger.info('MockAdapter initialized');
+  }
+
+  async shutdown(): Promise<void> {
+    this.shutdownCount++;
+  }
+
+  async healthCheck(): Promise<boolean> {
+    return true;
+  }
+
+  getToolDefinition(): ToolDefinition {
+    return {
+      name: 'mock_echo',
+      description: 'Echo back the input message',
+      inputSchema: {
+        type: 'object',
+        properties: {
+          message: {
+            type: 'string',
+            description: 'Message to echo back',
+          },
+          delay: {
+            type: 'number',
+            description: 'Optional delay in milliseconds',
+          },
+        },
+        required: ['message'],
+      },
+    };
+  }
+
+  validate(args: Record<string, unknown>): ValidationResult {
+    if (typeof args.message !== 'string') {
+      return {
+        valid: false,
+        error: 'message must be a string',
+      };
+    }
+
+    if (args.delay !== undefined && typeof args.delay !== 'number') {
+      return {
+        valid: false,
+        error: 'delay must be a number',
+      };
+    }
+
+    return { valid: true };
+  }
+
+  async execute(args: Record<string, unknown>, context: ToolExecutionContext): Promise<ToolResult> {
+    this.executeCount++;
+
+    const { message, delay } = args;
+
+    // Optional delay
+    if (delay && typeof delay === 'number') {
+      await new Promise((resolve) => setTimeout(resolve, delay));
+    }
+
+    context.logger.info('MockAdapter executing', { message });
+
+    return {
+      success: true,
+      data: {
+        echo: message,
+        timestamp: new Date().toISOString(),
+      },
+      metadata: {
+        tokenEstimate: 10,
+      },
+    };
+  }
+
+  estimateTokens(args: Record<string, unknown>): number {
+    const message = String(args.message || '');
+    return Math.ceil(message.length / 4) + 5; // Rough estimate
+  }
+
+  // Test helpers
+  getCallCounts() {
+    return {
+      initialize: this.initializeCount,
+      shutdown: this.shutdownCount,
+      execute: this.executeCount,
+    };
+  }
+
+  resetCounts() {
+    this.initializeCount = 0;
+    this.shutdownCount = 0;
+    this.executeCount = 0;
+  }
+}
diff --git a/packages/mcp-server/tests/integration/server.integration.test.ts b/packages/mcp-server/tests/integration/server.integration.test.ts
new file mode 100644
index 0000000..92e310b
--- /dev/null
+++ b/packages/mcp-server/tests/integration/server.integration.test.ts
@@ -0,0 +1,156 @@
+/**
+ * Integration Tests for MCP Server
+ * Tests the full server + adapter + transport stack
+ */
+
+import { afterEach, beforeEach, describe, expect, it } from 'vitest';
+import { MCPServer } from '../../src/server/mcp-server';
+import type { JSONRPCRequest, JSONRPCResponse } from '../../src/server/protocol/types';
+import { MockAdapter } from '../adapters/mock-adapter';
+
+describe('MCP Server Integration', () => {
+  let server: MCPServer;
+  let mockAdapter: MockAdapter;
+
+  beforeEach(() => {
+    mockAdapter = new MockAdapter();
+
+    server = new MCPServer({
+      serverInfo: {
+        name: 'test-server',
+        version: '1.0.0',
+      },
+      config: {
+        repositoryPath: '/test/repo',
+      },
+      transport: 'stdio',
+      adapters: [mockAdapter],
+    });
+  });
+
+  afterEach(async () => {
+    if (server) {
+      await server.stop();
+    }
+  });
+
+  describe('Server Lifecycle', () => {
+    it('should start and stop successfully', async () => {
+      await expect(server.start()).resolves.not.toThrow();
+      await expect(server.stop()).resolves.not.toThrow();
+    });
+
+    it('should initialize adapters on start', async () => {
+      await server.start();
+
+      const counts = mockAdapter.getCallCounts();
+      expect(counts.initialize).toBe(1);
+
+      await server.stop();
+    });
+
+    it('should shutdown adapters on stop', async () => {
+      await server.start();
+      await server.stop();
+
+      const counts = mockAdapter.getCallCounts();
+      expect(counts.shutdown).toBe(1);
+    });
+  });
+
+  describe('MCP Protocol', () => {
+    beforeEach(async () => {
+      await server.start();
+    });
+
+    it('should handle initialize request', async () => {
+      // Note: In real integration test, we'd send via stdio
+      // For now, we're testing the server can handle the methods
+
+      // Server exposes these methods internally via handleMessage
+      // which we can't easily test without a real transport
+
+      // This test validates server is set up correctly
+      expect(server).toBeDefined();
+    });
+
+    it('should register adapter successfully', () => {
+      const adapter = new MockAdapter();
+      adapter.getToolDefinition = () => ({
+        name: 'test_tool',
+        description: 'Test',
+        inputSchema: { type: 'object' },
+      });
+
+      expect(() => server.registerAdapter(adapter)).not.toThrow();
+    });
+  });
+
+  describe('Adapter Execution', () => {
+    beforeEach(async () => {
+      await server.start();
+    });
+
+    // Note: Full end-to-end test would require:
+    // 1. Sending JSON-RPC via stdin
+    // 2. Reading JSON-RPC from stdout
+    // 3. Testing tools/list, tools/call, etc.
+
+    // For now, we verify the components are wired together
+    it('should have mock adapter registered', async () => {
+      // The adapter was registered in beforeEach
+      // This test confirms the server is running
+      expect(server).toBeDefined();
+    });
+  });
+
+  describe('Error Handling', () => {
+    it('should handle multiple start calls gracefully', async () => {
+      await server.start();
+      // Second start should be handled gracefully
+      // (transport will check if already ready)
+      await expect(server.start()).resolves.not.toThrow();
+    });
+
+    it('should handle stop without start', async () => {
+      await expect(server.stop()).resolves.not.toThrow();
+    });
+  });
+});
+
+describe('MCP Server with Multiple Adapters', () => {
+  it('should handle multiple adapters', async () => {
+    const adapter1 = new MockAdapter();
+    const adapter2 = new MockAdapter();
+
+    adapter2.getToolDefinition = () => ({
+      name: 'mock_echo_2',
+      description: 'Second echo',
+      inputSchema: { type: 'object', properties: {} },
+    });
+
+    const server = new MCPServer({
+      serverInfo: {
+        name: 'multi-adapter-server',
+        version: '1.0.0',
+      },
+      config: {
+        repositoryPath: '/test/repo',
+      },
+      transport: 'stdio',
+      adapters: [adapter1, adapter2],
+    });
+
+    await server.start();
+
+    // Both adapters should be initialized
+    expect(adapter1.getCallCounts().initialize).toBe(1);
+    expect(adapter2.getCallCounts().initialize).toBe(1);
+
+    await server.stop();
+
+    // Both should be shut down
+    expect(adapter1.getCallCounts().shutdown).toBe(1);
+    expect(adapter2.getCallCounts().shutdown).toBe(1);
+  });
+});
diff --git a/packages/mcp-server/tests/server/jsonrpc.test.ts b/packages/mcp-server/tests/server/jsonrpc.test.ts
new file mode 100644
index 0000000..de132ee
--- /dev/null
+++ b/packages/mcp-server/tests/server/jsonrpc.test.ts
@@ -0,0 +1,249 @@
+/**
+ * Tests for JSON-RPC 2.0 Protocol Handler
+ */
+
+import { describe, expect, it } from 'vitest';
+import { JSONRPCHandler } from '../../src/server/protocol/jsonrpc';
+import { ErrorCode } from '../../src/server/protocol/types';
+
+describe('JSONRPCHandler', () => {
+  describe('parse', () => {
+    it('should parse valid JSON-RPC request', () => {
+      const message = JSON.stringify({
+        jsonrpc: '2.0',
+        id: 1,
+        method: 'test',
+        params: { foo: 'bar' },
+      });
+
+      const result = JSONRPCHandler.parse(message);
+
+      expect(result).toEqual({
+        jsonrpc: '2.0',
+        id: 1,
+        method: 'test',
+        params: { foo: 'bar' },
+      });
+    });
+
+    it('should parse notification (no id)', () => {
+      const message = JSON.stringify({
+        jsonrpc: '2.0',
+        method: 'notify',
+      });
+
+      const result = JSONRPCHandler.parse(message);
+
+      expect(result).toEqual({
+        jsonrpc: '2.0',
+        method: 'notify',
+      });
+      expect('id' in result).toBe(false);
+    });
+
+    it('should throw on invalid JSON', () => {
+      expect(() => JSONRPCHandler.parse('not json')).toThrow();
+    });
+
+    it('should throw on missing jsonrpc field', () => {
+      const message = JSON.stringify({
+        id: 1,
+        method: 'test',
+      });
+
+      expect(() => JSONRPCHandler.parse(message)).toThrow();
+    });
+
+    it('should throw on wrong jsonrpc version', () => {
+      const message = JSON.stringify({
+        jsonrpc: '1.0',
+        id: 1,
+        method: 'test',
+      });
+
+      expect(() => JSONRPCHandler.parse(message)).toThrow();
+    });
+
+    it('should throw on missing method', () => {
+      const message = JSON.stringify({
+        jsonrpc: '2.0',
+        id: 1,
+      });
+
+      expect(() => JSONRPCHandler.parse(message)).toThrow();
+    });
+  });
+
+  describe('createResponse', () => {
+    it('should create success response', () => {
+      const response = JSONRPCHandler.createResponse(1, { result: 'ok' });
+
+      expect(response).toEqual({
+        jsonrpc: '2.0',
+        id: 1,
+        result: { result: 'ok' },
+      });
+    });
+
+    it('should handle string id', () => {
+      const response = JSONRPCHandler.createResponse('test-id', 'success');
+
+      expect(response).toEqual({
+        jsonrpc: '2.0',
+        id: 'test-id',
+        result: 'success',
+      });
+    });
+  });
+
+  describe('createErrorResponse', () => {
+    it('should create error response', () => {
+      const error = {
+        code: ErrorCode.InvalidParams,
+        message: 'Invalid parameters',
+      };
+
+      const response = JSONRPCHandler.createErrorResponse(1, error);
+
+      expect(response).toEqual({
+        jsonrpc: '2.0',
+        id: 1,
+        error: {
+          code: ErrorCode.InvalidParams,
+          message: 'Invalid parameters',
+        },
+      });
+    });
+
+    it('should handle undefined id', () => {
+      const error = {
+        code: ErrorCode.ParseError,
+        message: 'Parse error',
+      };
+
+      const response = JSONRPCHandler.createErrorResponse(undefined, error);
+
+      expect(response.jsonrpc).toBe('2.0');
+      expect(response.error).toEqual(error);
+    });
+  });
+
+  describe('createNotification', () => {
+    it('should create notification without params', () => {
+      const notification = JSONRPCHandler.createNotification('test');
+
+      expect(notification).toEqual({
+        jsonrpc: '2.0',
+        method: 'test',
+      });
+      expect('id' in notification).toBe(false);
+    });
+
+    it('should create notification with params', () => {
+      const notification = JSONRPCHandler.createNotification('test', { foo: 'bar' });
+
+      expect(notification).toEqual({
+        jsonrpc: '2.0',
+        method: 'test',
+        params: { foo: 'bar' },
+      });
+    });
+  });
+
+  describe('serialize', () => {
+    it('should serialize response to JSON string', () => {
+      const response = {
+        jsonrpc: '2.0' as const,
+        id: 1,
+        result: { success: true },
+      };
+
+      const serialized = JSONRPCHandler.serialize(response);
+
+      expect(JSON.parse(serialized)).toEqual(response);
+    });
+
+    it('should serialize notification to JSON string', () => {
+      const notification = {
+        jsonrpc: '2.0' as const,
+        method: 'test',
+        params: { data: 'value' },
+      };
+
+      const serialized = JSONRPCHandler.serialize(notification);
+
+      expect(JSON.parse(serialized)).toEqual(notification);
+    });
+  });
+
+  describe('createError', () => {
+    it('should create error object', () => {
+      const error = JSONRPCHandler.createError(ErrorCode.InvalidRequest, 'Invalid request');
+
+      expect(error).toEqual({
+        code: ErrorCode.InvalidRequest,
+        message: 'Invalid request',
+      });
+    });
+
+    it('should include data if provided', () => {
+      const error = JSONRPCHandler.createError(ErrorCode.InternalError, 'Internal error', {
+        details: 'something went wrong',
+      });
+
+      expect(error).toEqual({
+        code: ErrorCode.InternalError,
+        message: 'Internal error',
+        data: { details: 'something went wrong' },
+      });
+    });
+  });
+
+  describe('isRequest', () => {
+    it('should return true for request (has id)', () => {
+      const request = {
+        jsonrpc: '2.0' as const,
+        id: 1,
+        method: 'test',
+      };
+
+      expect(JSONRPCHandler.isRequest(request)).toBe(true);
+    });
+
+    it('should return false for notification (no id)', () => {
+      const notification = {
+        jsonrpc: '2.0' as const,
+        method: 'test',
+      };
+
+      expect(JSONRPCHandler.isRequest(notification)).toBe(false);
+    });
+  });
+
+  describe('validateParams', () => {
+    it('should validate object params', () => {
+      const params = { foo: 'bar' };
+      expect(JSONRPCHandler.validateParams(params, 'object')).toBe(true);
+    });
+
+    it('should reject array when expecting object', () => {
+      const params = ['foo', 'bar'];
+      expect(JSONRPCHandler.validateParams(params, 'object')).toBe(false);
+    });
+
+    it('should validate array params', () => {
+      const params = [1, 2, 3];
+      expect(JSONRPCHandler.validateParams(params, 'array')).toBe(true);
+    });
+
+    it('should reject object when expecting array', () => {
+      const params = { foo: 'bar' };
+      expect(JSONRPCHandler.validateParams(params, 'array')).toBe(false);
+    });
+
+    it('should reject null', () => {
+      expect(JSONRPCHandler.validateParams(null, 'object')).toBe(false);
+      expect(JSONRPCHandler.validateParams(null, 'array')).toBe(false);
+    });
+  });
+});
diff --git a/packages/mcp-server/tests/server/utils/message-handlers.test.ts b/packages/mcp-server/tests/server/utils/message-handlers.test.ts
new file mode 100644
index 0000000..7a3101d
--- /dev/null
+++ b/packages/mcp-server/tests/server/utils/message-handlers.test.ts
@@ -0,0 +1,220 @@
+/**
+ * Tests for Message Handler Utilities
+ */
+
+import { describe, expect, it } from 'vitest';
+import type { ServerInfo } from '../../../src/server/protocol/types';
+import {
+  createInitializeResult,
+  extractToolCallParams,
+  isSupportedMethod,
+  validateRequest,
+} from '../../../src/server/utils/message-handlers';
+
+describe('messageHandlers', () => {
+  describe('createInitializeResult', () => {
+    it('should create valid initialize result', () => {
+      const serverInfo: ServerInfo = {
+        name: 'test-server',
+        version: '1.0.0',
+      };
+
+      const capabilities = {
+        tools: { dynamicRegistration: false },
+        resources: { dynamicRegistration: false },
+        prompts: { dynamicRegistration: false },
+      };
+
+      const result = createInitializeResult(serverInfo, capabilities);
+
+      expect(result.protocolVersion).toBe('1.0.0');
+      expect(result.serverInfo).toBe(serverInfo);
+      expect(result.capabilities).toBe(capabilities);
+    });
+  });
+
+  describe('extractToolCallParams', () => {
+    it('should extract valid tool call params', () => {
+      const params = {
+        name: 'test_tool',
+        arguments: { foo: 'bar' },
+      };
+
+      const result = extractToolCallParams(params);
+
+      expect(result).toEqual({
+        name: 'test_tool',
+        arguments: { foo: 'bar' },
+      });
+    });
+
+    it('should return null for missing name', () => {
+      const params = {
+        arguments: { foo: 'bar' },
+      };
+
+      const result = extractToolCallParams(params);
+
+      expect(result).toBeNull();
+    });
+
+    it('should return null for non-string name', () => {
+      const params = {
+        name: 123,
+        arguments: { foo: 'bar' },
+      };
+
+      const result = extractToolCallParams(params);
+
+      expect(result).toBeNull();
+    });
+
+    it('should return null for missing arguments', () => {
+      const params = {
+        name: 'test_tool',
+      };
+
+      const result = extractToolCallParams(params);
+
+      expect(result).toBeNull();
+    });
+
+    it('should return null for non-object arguments', () => {
+      const params = {
+        name: 'test_tool',
+        arguments: 'not an object',
+      };
+
+      const result = extractToolCallParams(params);
+
+      expect(result).toBeNull();
+    });
+
+    it('should return null for null arguments', () => {
+      const params = {
+        name: 'test_tool',
+        arguments: null,
+      };
+
+      const result = extractToolCallParams(params);
+
+      expect(result).toBeNull();
+    });
+
+    it('should return null for undefined params', () => {
+      const result = extractToolCallParams(undefined);
+
+      expect(result).toBeNull();
+    });
+
+    it('should return null for null params', () => {
+      const result = extractToolCallParams(null);
+
+      expect(result).toBeNull();
+    });
+
+    it('should return null for non-object params', () => {
+      const result = extractToolCallParams('not an object');
+
+      expect(result).toBeNull();
+    });
+  });
+
+  describe('validateRequest', () => {
+    it('should validate valid request', () => {
+      const request = {
+        jsonrpc: '2.0',
+        id: 1,
+        method: 'test',
+      };
+
+      expect(validateRequest(request)).toBe(true);
+    });
+
+    it('should validate notification (no id)', () => {
+      const request = {
+        jsonrpc: '2.0',
+        method: 'test',
+      };
+
+      expect(validateRequest(request)).toBe(true);
+    });
+
+    it('should reject missing jsonrpc', () => {
+      const request = {
+        id: 1,
+        method: 'test',
+      };
+
+      expect(validateRequest(request)).toBe(false);
+    });
+
+    it('should reject wrong jsonrpc version', () => {
+      const request = {
+        jsonrpc: '1.0',
+        id: 1,
+        method: 'test',
+      };
+
+      expect(validateRequest(request)).toBe(false);
+    });
+
+    it('should reject missing method', () => {
+      const request = {
+        jsonrpc: '2.0',
+        id: 1,
+      };
+
+      expect(validateRequest(request)).toBe(false);
+    });
+
+    it('should reject non-string method', () => {
+      const request = {
+        jsonrpc: '2.0',
+        id: 1,
+        method: 123,
+      };
+
+      expect(validateRequest(request)).toBe(false);
+    });
+
+    it('should reject null request', () => {
+      expect(validateRequest(null)).toBe(false);
+    });
+
+    it('should reject undefined request', () => {
+      expect(validateRequest(undefined)).toBe(false);
+    });
+
+    it('should reject non-object request', () => {
+      expect(validateRequest('not an object')).toBe(false);
+    });
+  });
+
+  describe('isSupportedMethod', () => {
+    it('should return true for initialize', () => {
+      expect(isSupportedMethod('initialize')).toBe(true);
+    });
+
+    it('should return true for tools/list', () => {
+      expect(isSupportedMethod('tools/list')).toBe(true);
+    });
+
+    it('should return true for tools/call', () => {
+      expect(isSupportedMethod('tools/call')).toBe(true);
+    });
+
+    it('should return false for unsupported method', () => {
+      expect(isSupportedMethod('unknown/method')).toBe(false);
+    });
+
+    it('should return false for empty string', () => {
+      expect(isSupportedMethod('')).toBe(false);
+    });
+
+    it('should be case-sensitive', () => {
+      expect(isSupportedMethod('Initialize')).toBe(false);
+      expect(isSupportedMethod('TOOLS/LIST')).toBe(false);
+    });
+  });
+});
diff --git a/packages/mcp-server/tsconfig.json b/packages/mcp-server/tsconfig.json
new file mode 100644
index 0000000..4da598a
--- /dev/null
+++ b/packages/mcp-server/tsconfig.json
@@ -0,0 +1,17 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./dist",
+    "rootDir": "./src",
+    "composite": true,
+    "declaration": true,
+    "declarationMap": true
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules", "dist", "**/*.test.ts"],
+  "references": [
+    { "path": "../core" },
+    { "path": "../subagents" }
+  ]
+}
+
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 76930cb..b8ed709 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -117,6 +117,25 @@ importers:
         specifier: ^5.3.3
         version: 5.9.3
 
+  packages/mcp-server:
+    dependencies:
+      '@lytics/dev-agent-core':
+        specifier: workspace:*
+        version: link:../core
+      '@lytics/dev-agent-subagents':
+        specifier: workspace:*
+        version: link:../subagents
+    devDependencies:
+      '@types/node':
+        specifier: ^22.0.0
+        version: 22.19.1
+      typescript:
+        specifier: ^5.7.2
+        version: 5.9.3
+      vitest:
+        specifier: ^2.1.8
+        version: 2.1.9(@types/node@22.19.1)
+
   packages/subagents:
     dependencies:
       '@lytics/dev-agent-core':
@@ -607,6 +626,15 @@ packages:
       chalk: 5.6.2
     dev: true
 
+  /@esbuild/aix-ppc64@0.21.5:
+    resolution: {integrity: sha512-1SDgH6ZSPTlggy1yI6+Dbkiz8xzpHJEVAlF/AM1tHPLsf5STom9rwtjE4hKAF20FfXXNTFqEYXyJNWh1GiZedQ==}
+    engines: {node: '>=12'}
+    cpu: [ppc64]
+    os: [aix]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/aix-ppc64@0.25.11:
     resolution: {integrity: sha512-Xt1dOL13m8u0WE8iplx9Ibbm+hFAO0GsU2P34UNoDGvZYkY8ifSiy6Zuc1lYxfG7svWE2fzqCUmFp5HCn51gJg==}
     engines: {node: '>=18'}
@@ -616,6 +644,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/android-arm64@0.21.5:
+    resolution: {integrity: sha512-c0uX9VAUBQ7dTDCjq+wdyGLowMdtR/GoC2U5IYk/7D1H1JYC0qseD7+11iMP2mRLN9RcCMRcjC4YMclCzGwS/A==}
+    engines: {node: '>=12'}
+    cpu: [arm64]
+    os: [android]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/android-arm64@0.25.11:
     resolution: {integrity: sha512-9slpyFBc4FPPz48+f6jyiXOx/Y4v34TUeDDXJpZqAWQn/08lKGeD8aDp9TMn9jDz2CiEuHwfhRmGBvpnd/PWIQ==}
     engines: {node: '>=18'}
@@ -625,6 +662,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/android-arm@0.21.5:
+    resolution: {integrity: sha512-vCPvzSjpPHEi1siZdlvAlsPxXl7WbOVUBBAowWug4rJHb68Ox8KualB+1ocNvT5fjv6wpkX6o/iEpbDrf68zcg==}
+    engines: {node: '>=12'}
+    cpu: [arm]
+    os: [android]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/android-arm@0.25.11:
     resolution: {integrity: sha512-uoa7dU+Dt3HYsethkJ1k6Z9YdcHjTrSb5NUy66ZfZaSV8hEYGD5ZHbEMXnqLFlbBflLsl89Zke7CAdDJ4JI+Gg==}
     engines: {node: '>=18'}
@@ -634,6 +680,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/android-x64@0.21.5:
+    resolution: {integrity: sha512-D7aPRUUNHRBwHxzxRvp856rjUHRFW1SdQATKXH2hqA0kAZb1hKmi02OpYRacl0TxIGz/ZmXWlbZgjwWYaCakTA==}
+    engines: {node: '>=12'}
+    cpu: [x64]
+    os: [android]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/android-x64@0.25.11:
     resolution: {integrity: sha512-Sgiab4xBjPU1QoPEIqS3Xx+R2lezu0LKIEcYe6pftr56PqPygbB7+szVnzoShbx64MUupqoE0KyRlN7gezbl8g==}
     engines: {node: '>=18'}
@@ -643,6 +698,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/darwin-arm64@0.21.5:
+    resolution: {integrity: sha512-DwqXqZyuk5AiWWf3UfLiRDJ5EDd49zg6O9wclZ7kUMv2WRFr4HKjXp/5t8JZ11QbQfUS6/cRCKGwYhtNAY88kQ==}
+    engines: {node: '>=12'}
+    cpu: [arm64]
+    os: [darwin]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/darwin-arm64@0.25.11:
     resolution: {integrity: sha512-VekY0PBCukppoQrycFxUqkCojnTQhdec0vevUL/EDOCnXd9LKWqD/bHwMPzigIJXPhC59Vd1WFIL57SKs2mg4w==}
     engines: {node: '>=18'}
@@ -652,6 +716,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/darwin-x64@0.21.5:
+    resolution: {integrity: sha512-se/JjF8NlmKVG4kNIuyWMV/22ZaerB+qaSi5MdrXtd6R08kvs2qCN4C09miupktDitvh8jRFflwGFBQcxZRjbw==}
+    engines: {node: '>=12'}
+    cpu: [x64]
+    os: [darwin]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/darwin-x64@0.25.11:
     resolution: {integrity: sha512-+hfp3yfBalNEpTGp9loYgbknjR695HkqtY3d3/JjSRUyPg/xd6q+mQqIb5qdywnDxRZykIHs3axEqU6l1+oWEQ==}
     engines: {node: '>=18'}
@@ -661,6 +734,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/freebsd-arm64@0.21.5:
+    resolution: {integrity: sha512-5JcRxxRDUJLX8JXp/wcBCy3pENnCgBR9bN6JsY4OmhfUtIHe3ZW0mawA7+RDAcMLrMIZaf03NlQiX9DGyB8h4g==}
+    engines: {node: '>=12'}
+    cpu: [arm64]
+    os: [freebsd]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/freebsd-arm64@0.25.11:
     resolution: {integrity: sha512-CmKjrnayyTJF2eVuO//uSjl/K3KsMIeYeyN7FyDBjsR3lnSJHaXlVoAK8DZa7lXWChbuOk7NjAc7ygAwrnPBhA==}
     engines: {node: '>=18'}
@@ -670,6 +752,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/freebsd-x64@0.21.5:
+    resolution: {integrity: sha512-J95kNBj1zkbMXtHVH29bBriQygMXqoVQOQYA+ISs0/2l3T9/kj42ow2mpqerRBxDJnmkUDCaQT/dfNXWX/ZZCQ==}
+    engines: {node: '>=12'}
+    cpu: [x64]
+    os: [freebsd]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/freebsd-x64@0.25.11:
     resolution: {integrity: sha512-Dyq+5oscTJvMaYPvW3x3FLpi2+gSZTCE/1ffdwuM6G1ARang/mb3jvjxs0mw6n3Lsw84ocfo9CrNMqc5lTfGOw==}
     engines: {node: '>=18'}
@@ -679,6 +770,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/linux-arm64@0.21.5:
+    resolution: {integrity: sha512-ibKvmyYzKsBeX8d8I7MH/TMfWDXBF3db4qM6sy+7re0YXya+K1cem3on9XgdT2EQGMu4hQyZhan7TeQ8XkGp4Q==}
+    engines: {node: '>=12'}
+    cpu: [arm64]
+    os: [linux]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/linux-arm64@0.25.11:
     resolution: {integrity: sha512-Qr8AzcplUhGvdyUF08A1kHU3Vr2O88xxP0Tm8GcdVOUm25XYcMPp2YqSVHbLuXzYQMf9Bh/iKx7YPqECs6ffLA==}
     engines: {node: '>=18'}
@@ -688,6 +788,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/linux-arm@0.21.5:
+    resolution: {integrity: sha512-bPb5AHZtbeNGjCKVZ9UGqGwo8EUu4cLq68E95A53KlxAPRmUyYv2D6F0uUI65XisGOL1hBP5mTronbgo+0bFcA==}
+    engines: {node: '>=12'}
+    cpu: [arm]
+    os: [linux]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/linux-arm@0.25.11:
     resolution: {integrity: sha512-TBMv6B4kCfrGJ8cUPo7vd6NECZH/8hPpBHHlYI3qzoYFvWu2AdTvZNuU/7hsbKWqu/COU7NIK12dHAAqBLLXgw==}
     engines: {node: '>=18'}
@@ -697,6 +806,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/linux-ia32@0.21.5:
+    resolution: {integrity: sha512-YvjXDqLRqPDl2dvRODYmmhz4rPeVKYvppfGYKSNGdyZkA01046pLWyRKKI3ax8fbJoK5QbxblURkwK/MWY18Tg==}
+    engines: {node: '>=12'}
+    cpu: [ia32]
+    os: [linux]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/linux-ia32@0.25.11:
     resolution: {integrity: sha512-TmnJg8BMGPehs5JKrCLqyWTVAvielc615jbkOirATQvWWB1NMXY77oLMzsUjRLa0+ngecEmDGqt5jiDC6bfvOw==}
     engines: {node: '>=18'}
@@ -706,6 +824,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/linux-loong64@0.21.5:
+    resolution: {integrity: sha512-uHf1BmMG8qEvzdrzAqg2SIG/02+4/DHB6a9Kbya0XDvwDEKCoC8ZRWI5JJvNdUjtciBGFQ5PuBlpEOXQj+JQSg==}
+    engines: {node: '>=12'}
+    cpu: [loong64]
+    os: [linux]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/linux-loong64@0.25.11:
     resolution: {integrity: sha512-DIGXL2+gvDaXlaq8xruNXUJdT5tF+SBbJQKbWy/0J7OhU8gOHOzKmGIlfTTl6nHaCOoipxQbuJi7O++ldrxgMw==}
     engines: {node: '>=18'}
@@ -715,6 +842,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/linux-mips64el@0.21.5:
+    resolution: {integrity: sha512-IajOmO+KJK23bj52dFSNCMsz1QP1DqM6cwLUv3W1QwyxkyIWecfafnI555fvSGqEKwjMXVLokcV5ygHW5b3Jbg==}
+    engines: {node: '>=12'}
+    cpu: [mips64el]
+    os: [linux]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/linux-mips64el@0.25.11:
     resolution: {integrity: sha512-Osx1nALUJu4pU43o9OyjSCXokFkFbyzjXb6VhGIJZQ5JZi8ylCQ9/LFagolPsHtgw6himDSyb5ETSfmp4rpiKQ==}
     engines: {node: '>=18'}
@@ -724,6 +860,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/linux-ppc64@0.21.5:
+    resolution: {integrity: sha512-1hHV/Z4OEfMwpLO8rp7CvlhBDnjsC3CttJXIhBi+5Aj5r+MBvy4egg7wCbe//hSsT+RvDAG7s81tAvpL2XAE4w==}
+    engines: {node: '>=12'}
+    cpu: [ppc64]
+    os: [linux]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/linux-ppc64@0.25.11:
     resolution: {integrity: sha512-nbLFgsQQEsBa8XSgSTSlrnBSrpoWh7ioFDUmwo158gIm5NNP+17IYmNWzaIzWmgCxq56vfr34xGkOcZ7jX6CPw==}
     engines: {node: '>=18'}
@@ -733,6 +878,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/linux-riscv64@0.21.5:
+    resolution: {integrity: sha512-2HdXDMd9GMgTGrPWnJzP2ALSokE/0O5HhTUvWIbD3YdjME8JwvSCnNGBnTThKGEB91OZhzrJ4qIIxk/SBmyDDA==}
+    engines: {node: '>=12'}
+    cpu: [riscv64]
+    os: [linux]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/linux-riscv64@0.25.11:
     resolution: {integrity: sha512-HfyAmqZi9uBAbgKYP1yGuI7tSREXwIb438q0nqvlpxAOs3XnZ8RsisRfmVsgV486NdjD7Mw2UrFSw51lzUk1ww==}
     engines: {node: '>=18'}
@@ -742,6 +896,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/linux-s390x@0.21.5:
+    resolution: {integrity: sha512-zus5sxzqBJD3eXxwvjN1yQkRepANgxE9lgOW2qLnmr8ikMTphkjgXu1HR01K4FJg8h1kEEDAqDcZQtbrRnB41A==}
+    engines: {node: '>=12'}
+    cpu: [s390x]
+    os: [linux]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/linux-s390x@0.25.11:
     resolution: {integrity: sha512-HjLqVgSSYnVXRisyfmzsH6mXqyvj0SA7pG5g+9W7ESgwA70AXYNpfKBqh1KbTxmQVaYxpzA/SvlB9oclGPbApw==}
     engines: {node: '>=18'}
@@ -751,6 +914,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/linux-x64@0.21.5:
+    resolution: {integrity: sha512-1rYdTpyv03iycF1+BhzrzQJCdOuAOtaqHTWJZCWvijKD2N5Xu0TtVC8/+1faWqcP9iBCWOmjmhoH94dH82BxPQ==}
+    engines: {node: '>=12'}
+    cpu: [x64]
+    os: [linux]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/linux-x64@0.25.11:
     resolution: {integrity: sha512-HSFAT4+WYjIhrHxKBwGmOOSpphjYkcswF449j6EjsjbinTZbp8PJtjsVK1XFJStdzXdy/jaddAep2FGY+wyFAQ==}
     engines: {node: '>=18'}
@@ -769,6 +941,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/netbsd-x64@0.21.5:
+    resolution: {integrity: sha512-Woi2MXzXjMULccIwMnLciyZH4nCIMpWQAs049KEeMvOcNADVxo0UBIQPfSmxB3CWKedngg7sWZdLvLczpe0tLg==}
+    engines: {node: '>=12'}
+    cpu: [x64]
+    os: [netbsd]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/netbsd-x64@0.25.11:
     resolution: {integrity: sha512-u7tKA+qbzBydyj0vgpu+5h5AeudxOAGncb8N6C9Kh1N4n7wU1Xw1JDApsRjpShRpXRQlJLb9wY28ELpwdPcZ7A==}
     engines: {node: '>=18'}
@@ -787,6 +968,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/openbsd-x64@0.21.5:
+    resolution: {integrity: sha512-HLNNw99xsvx12lFBUwoT8EVCsSvRNDVxNpjZ7bPn947b8gJPzeHWyNVhFsaerc0n3TsbOINvRP2byTZ5LKezow==}
+    engines: {node: '>=12'}
+    cpu: [x64]
+    os: [openbsd]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/openbsd-x64@0.25.11:
     resolution: {integrity: sha512-CN+7c++kkbrckTOz5hrehxWN7uIhFFlmS/hqziSFVWpAzpWrQoAG4chH+nN3Be+Kzv/uuo7zhX716x3Sn2Jduw==}
     engines: {node: '>=18'}
@@ -805,6 +995,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/sunos-x64@0.21.5:
+    resolution: {integrity: sha512-6+gjmFpfy0BHU5Tpptkuh8+uw3mnrvgs+dSPQXQOv3ekbordwnzTVEb4qnIvQcYXq6gzkyTnoZ9dZG+D4garKg==}
+    engines: {node: '>=12'}
+    cpu: [x64]
+    os: [sunos]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/sunos-x64@0.25.11:
     resolution: {integrity: sha512-nq2xdYaWxyg9DcIyXkZhcYulC6pQ2FuCgem3LI92IwMgIZ69KHeY8T4Y88pcwoLIjbed8n36CyKoYRDygNSGhA==}
     engines: {node: '>=18'}
@@ -814,6 +1013,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/win32-arm64@0.21.5:
+    resolution: {integrity: sha512-Z0gOTd75VvXqyq7nsl93zwahcTROgqvuAcYDUr+vOv8uHhNSKROyU961kgtCD1e95IqPKSQKH7tBTslnS3tA8A==}
+    engines: {node: '>=12'}
+    cpu: [arm64]
+    os: [win32]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/win32-arm64@0.25.11:
     resolution: {integrity: sha512-3XxECOWJq1qMZ3MN8srCJ/QfoLpL+VaxD/WfNRm1O3B4+AZ/BnLVgFbUV3eiRYDMXetciH16dwPbbHqwe1uU0Q==}
     engines: {node: '>=18'}
@@ -823,6 +1031,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/win32-ia32@0.21.5:
+    resolution: {integrity: sha512-SWXFF1CL2RVNMaVs+BBClwtfZSvDgtL//G/smwAc5oVK/UPu2Gu9tIaRgFmYFFKrmg3SyAjSrElf0TiJ1v8fYA==}
+    engines: {node: '>=12'}
+    cpu: [ia32]
+    os: [win32]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/win32-ia32@0.25.11:
     resolution: {integrity: sha512-3ukss6gb9XZ8TlRyJlgLn17ecsK4NSQTmdIXRASVsiS2sQ6zPPZklNJT5GR5tE/MUarymmy8kCEf5xPCNCqVOA==}
     engines: {node: '>=18'}
@@ -832,6 +1049,15 @@ packages:
     dev: true
     optional: true
 
+  /@esbuild/win32-x64@0.21.5:
+    resolution: {integrity: sha512-tQd/1efJuzPC6rCFwEvLtci/xNFcTZknmXs98FYDfGE4wP9ClFV98nyKrzJKVPMhdDnjzLhdUyMX4PsQAPjwIw==}
+    engines: {node: '>=12'}
+    cpu: [x64]
+    os: [win32]
+    requiresBuild: true
+    dev: true
+    optional: true
+
   /@esbuild/win32-x64@0.25.11:
     resolution: {integrity: sha512-D7Hpz6A2L4hzsRpPaCYkQnGOotdUpDzSGRIv9I+1ITdHROSFUWW95ZPZWQmGka1Fg7W3zFJowyn9WGwMJ0+KPA==}
     engines: {node: '>=18'}
@@ -1361,6 +1587,15 @@ packages:
       - supports-color
     dev: true
 
+  /@vitest/expect@2.1.9:
+    resolution: {integrity: sha512-UJCIkTBenHeKT1TTlKMJWy1laZewsRIzYighyYiJKZreqtdxSos/S1t+ktRMQWu2CKqaarrkeszJx1cgC5tGZw==}
+    dependencies:
+      '@vitest/spy': 2.1.9
+      '@vitest/utils': 2.1.9
+      chai: 5.3.3
+      tinyrainbow: 1.2.0
+    dev: true
+
   /@vitest/expect@4.0.3:
     resolution: {integrity: sha512-v3eSDx/bF25pzar6aEJrrdTXJduEBU3uSGXHslIdGIpJVP8tQQHV6x1ZfzbFQ/bLIomLSbR/2ZCfnaEGkWkiVQ==}
     dependencies:
@@ -1372,6 +1607,23 @@ packages:
       tinyrainbow: 3.0.3
     dev: true
 
+  /@vitest/mocker@2.1.9(vite@5.4.21):
+    resolution: {integrity: sha512-tVL6uJgoUdi6icpxmdrn5YNo3g3Dxv+IHJBr0GXHaEdTcw3F+cPKnsXFhli6nO+f/6SDKPHEK1UN+k+TQv0Ehg==}
+    peerDependencies:
+      msw: ^2.4.9
+      vite: ^5.0.0
+    peerDependenciesMeta:
+      msw:
+        optional: true
+      vite:
+        optional: true
+    dependencies:
+      '@vitest/spy': 2.1.9
+      estree-walker: 3.0.3
+      magic-string: 0.30.19
+      vite: 5.4.21(@types/node@22.19.1)
+    dev: true
+
   /@vitest/mocker@4.0.3(vite@7.1.12):
     resolution: {integrity: sha512-evZcRspIPbbiJEe748zI2BRu94ThCBE+RkjCpVF8yoVYuTV7hMe+4wLF/7K86r8GwJHSmAPnPbZhpXWWrg1qbA==}
     peerDependencies:
@@ -1389,12 +1641,25 @@ packages:
       vite: 7.1.12(@types/node@24.10.1)
     dev: true
 
+  /@vitest/pretty-format@2.1.9:
+    resolution: {integrity: sha512-KhRIdGV2U9HOUzxfiHmY8IFHTdqtOhIzCpd8WRdJiE7D/HUcZVD0EgQCVjm+Q9gkUXWgBvMmTtZgIG48wq7sOQ==}
+    dependencies:
+      tinyrainbow: 1.2.0
+    dev: true
+
   /@vitest/pretty-format@4.0.3:
     resolution: {integrity: sha512-N7gly/DRXzxa9w9sbDXwD9QNFYP2hw90LLLGDobPNwiWgyW95GMxsCt29/COIKKh3P7XJICR38PSDePenMBtsw==}
     dependencies:
       tinyrainbow: 3.0.3
     dev: true
 
+  /@vitest/runner@2.1.9:
+    resolution: {integrity: sha512-ZXSSqTFIrzduD63btIfEyOmNcBmQvgOVsPNPe0jYtESiXkhd8u2erDLnMxmGrDCwHCCHE7hxwRDCT3pt0esT4g==}
+    dependencies:
+      '@vitest/utils': 2.1.9
+      pathe: 1.1.2
+    dev: true
+
   /@vitest/runner@4.0.3:
     resolution: {integrity: sha512-1/aK6fPM0lYXWyGKwop2Gbvz1plyTps/HDbIIJXYtJtspHjpXIeB3If07eWpVH4HW7Rmd3Rl+IS/+zEAXrRtXA==}
     dependencies:
@@ -1402,6 +1667,14 @@ packages:
       pathe: 2.0.3
     dev: true
 
+  /@vitest/snapshot@2.1.9:
+    resolution: {integrity: sha512-oBO82rEjsxLNJincVhLhaxxZdEtV0EFHMK5Kmx5sJ6H9L183dHECjiefOAdnqpIgT5eZwT04PoggUnW88vOBNQ==}
+    dependencies:
+      '@vitest/pretty-format': 2.1.9
+      magic-string: 0.30.19
+      pathe: 1.1.2
+    dev: true
+
   /@vitest/snapshot@4.0.3:
     resolution: {integrity: sha512-amnYmvZ5MTjNCP1HZmdeczAPLRD6iOm9+2nMRUGxbe/6sQ0Ymur0NnR9LIrWS8JA3wKE71X25D6ya/3LN9YytA==}
     dependencies:
@@ -1410,10 +1683,24 @@ packages:
       pathe: 2.0.3
     dev: true
 
+  /@vitest/spy@2.1.9:
+    resolution: {integrity: sha512-E1B35FwzXXTs9FHNK6bDszs7mtydNi5MIfUWpceJ8Xbfb1gBMscAnwLbEu+B44ed6W3XjL9/ehLPHR1fkf1KLQ==}
+    dependencies:
+      tinyspy: 3.0.2
+    dev: true
+
   /@vitest/spy@4.0.3:
     resolution: {integrity: sha512-82vVL8Cqz7rbXaNUl35V2G7xeNMAjBdNOVaHbrzznT9BmiCiPOzhf0FhU3eP41nP1bLDm/5wWKZqkG4nyU95DQ==}
     dev: true
 
+  /@vitest/utils@2.1.9:
+    resolution: {integrity: sha512-v0psaMSkNJ3A2NMrUEHFRzJtDPFn+/VWZ5WxImB21T9fjucJRmS7xCS3ppEnARb9y11OAzaD+P2Ps+b+BGX5iQ==}
+    dependencies:
+      '@vitest/pretty-format': 2.1.9
+      loupe: 3.2.1
+      tinyrainbow: 1.2.0
+    dev: true
+
   /@vitest/utils@4.0.3:
     resolution: {integrity: sha512-qV6KJkq8W3piW6MDIbGOmn1xhvcW4DuA07alqaQ+vdx7YA49J85pnwnxigZVQFQw3tWnQNRKWwhz5wbP6iv/GQ==}
     dependencies:
@@ -1648,11 +1935,27 @@ packages:
       ieee754: 1.2.1
     dev: false
 
+  /cac@6.7.14:
+    resolution: {integrity: sha512-b6Ilus+c3RrdDk+JhLKUAQfzzgLEPy6wcXqS7f/xe1EETvsDP6GORG7SFuOs6cID5YkqchW/LXZbX5bc8j7ZcQ==}
+    engines: {node: '>=8'}
+    dev: true
+
   /callsites@3.1.0:
     resolution: {integrity: sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ==}
     engines: {node: '>=6'}
     dev: true
 
+  /chai@5.3.3:
+    resolution: {integrity: sha512-4zNhdJD/iOjSH0A05ea+Ke6MU5mmpQcbQsSOkgdaUMJ9zTlDTD/GYlwohmIE2u0gaxHYiVHEn1Fw9mZ/ktJWgw==}
+    engines: {node: '>=18'}
+    dependencies:
+      assertion-error: 2.0.1
+      check-error: 2.1.1
+      deep-eql: 5.0.2
+      loupe: 3.2.1
+      pathval: 2.0.1
+    dev: true
+
   /chai@6.2.0:
     resolution: {integrity: sha512-aUTnJc/JipRzJrNADXVvpVqi6CO0dn3nx4EVPxijri+fj3LUUDyZQOgVeW54Ob3Y1Xh9Iz8f+CgaCl8v0mn9bA==}
     engines: {node: '>=18'}
@@ -1685,6 +1988,11 @@ packages:
     resolution: {integrity: sha512-bNFETTG/pM5ryzQ9Ad0lJOTa6HWD/YsScAR3EnCPZRPlQh77JocYktSHOUHelyhm8IARL+o4c4F1bP5KVOjiRA==}
     dev: true
 
+  /check-error@2.1.1:
+    resolution: {integrity: sha512-OAlb+T7V4Op9OwdkjmguYRqncdlx5JiofwOAUkmTF+jNdHwzTaTs4sRAGpzLF3oOz5xAyDGrPgeIDFQmDOTiJw==}
+    engines: {node: '>= 16'}
+    dev: true
+
   /chownr@1.1.4:
     resolution: {integrity: sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg==}
     dev: false
@@ -1868,6 +2176,11 @@ packages:
       mimic-response: 3.1.0
     dev: false
 
+  /deep-eql@5.0.2:
+    resolution: {integrity: sha512-h5k/5U50IJJFpzfL6nO9jaaumfjO/f2NjK/oYB2Djzm4p9L+3T9qWpZqZ2hAbLPuuYq9wrU08WQyBTL5GbPk5Q==}
+    engines: {node: '>=6'}
+    dev: true
+
   /deep-extend@0.6.0:
     resolution: {integrity: sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA==}
     engines: {node: '>=4.0.0'}
@@ -1945,6 +2258,37 @@ packages:
     resolution: {integrity: sha512-jEQoCwk8hyb2AZziIOLhDqpm5+2ww5uIE6lkO/6jcOCusfk6LhMHpXXfBLXTZ7Ydyt0j4VoUQv6uGNYbdW+kBA==}
     dev: true
 
+  /esbuild@0.21.5:
+    resolution: {integrity: sha512-mg3OPMV4hXywwpoDxu3Qda5xCKQi+vCTZq8S9J/EpkhB2HzKXq4SNFZE3+NK93JYxc8VMSep+lOUSC/RVKaBqw==}
+    engines: {node: '>=12'}
+    hasBin: true
+    requiresBuild: true
+    optionalDependencies:
+      '@esbuild/aix-ppc64': 0.21.5
+      '@esbuild/android-arm': 0.21.5
+      '@esbuild/android-arm64': 0.21.5
+      '@esbuild/android-x64': 0.21.5
+      '@esbuild/darwin-arm64': 0.21.5
+      '@esbuild/darwin-x64': 0.21.5
+      '@esbuild/freebsd-arm64': 0.21.5
+      '@esbuild/freebsd-x64': 0.21.5
+      '@esbuild/linux-arm': 0.21.5
+      '@esbuild/linux-arm64': 0.21.5
+      '@esbuild/linux-ia32': 0.21.5
+      '@esbuild/linux-loong64': 0.21.5
+      '@esbuild/linux-mips64el': 0.21.5
+      '@esbuild/linux-ppc64': 0.21.5
+      '@esbuild/linux-riscv64': 0.21.5
+      '@esbuild/linux-s390x': 0.21.5
+      '@esbuild/linux-x64': 0.21.5
+      '@esbuild/netbsd-x64': 0.21.5
+      '@esbuild/openbsd-x64': 0.21.5
+      '@esbuild/sunos-x64': 0.21.5
+      '@esbuild/win32-arm64': 0.21.5
+      '@esbuild/win32-ia32': 0.21.5
+      '@esbuild/win32-x64': 0.21.5
+    dev: true
+
   /esbuild@0.25.11:
     resolution: {integrity: sha512-KohQwyzrKTQmhXDW1PjCv3Tyspn9n5GcY2RTDqeORIdIJY8yKIF7sTSopFmn/wpMPW4rdPXI0UE5LJLuq3bx0Q==}
     engines: {node: '>=18'}
@@ -2496,6 +2840,10 @@ packages:
     resolution: {integrity: sha512-9Ri+o0JYgehTaVBBDoMqIl8GXtbWg711O3srftcHhZ0dqnETqLaoIK0x17fUw9rFSlK/0NlsKe0Ahhyl5pXE2g==}
     dev: false
 
+  /loupe@3.2.1:
+    resolution: {integrity: sha512-CdzqowRJCeLU72bHvWqwRBBlLcMEtIvGrlvef74kMnV2AolS9Y8xUv1I0U/MNAWMhBlKIoyuEgoJ0t/bbwHbLQ==}
+    dev: true
+
   /magic-string@0.30.19:
     resolution: {integrity: sha512-2N21sPY9Ws53PZvsEpVtNuSW+ScYbQdp4b9qUaL+9QkHUrGFKo56Lg9Emg5s9V/qrtNBmiR01sYhUOwu3H+VOw==}
     dependencies:
@@ -2961,10 +3309,19 @@ packages:
     engines: {node: '>=8'}
     dev: true
 
+  /pathe@1.1.2:
+    resolution: {integrity: sha512-whLdWMYL2TwI08hn8/ZqAbrVemu0LNaNNJZX73O6qaIdCTfXutsLhMkjdENX0qhsQ9uIimo4/aQOmXkoon2nDQ==}
+    dev: true
+
   /pathe@2.0.3:
     resolution: {integrity: sha512-WUjGcAqP1gQacoQe+OBJsFA7Ld4DyXuUIjZ5cc75cLHvJ7dtNsTugphxIADwspS+AraAUePCKrSVtPLFj/F88w==}
     dev: true
 
+  /pathval@2.0.1:
+    resolution: {integrity: sha512-//nshmD55c46FuFw26xV/xFAaB5HF9Xdap7HJBBnrKdAd6/GxDBaNA1870O79+9ueg61cZLSVc+OaFlfmObYVQ==}
+    engines: {node: '>= 14.16'}
+    dev: true
+
   /picocolors@1.1.1:
     resolution: {integrity: sha512-xceH2snhtb5M9liqDsmEw56le376mTZkEX/jEb/RxNFyegNul7eNslCXP9FDj/Lcu0X8KEyMceP2ntpaHrDEVA==}
     dev: true
@@ -3459,11 +3816,26 @@ packages:
       fdir: 6.5.0(picomatch@4.0.3)
       picomatch: 4.0.3
 
+  /tinypool@1.1.1:
+    resolution: {integrity: sha512-Zba82s87IFq9A9XmjiX5uZA/ARWDrB03OHlq+Vw1fSdt0I+4/Kutwy8BP4Y/y/aORMo61FQ0vIb5j44vSo5Pkg==}
+    engines: {node: ^18.0.0 || >=20.0.0}
+    dev: true
+
+  /tinyrainbow@1.2.0:
+    resolution: {integrity: sha512-weEDEq7Z5eTHPDh4xjX789+fHfF+P8boiFB+0vbWzpbnbsEr/GRaohi/uMKxg8RZMXnl1ItAi/IUHWMsjDV7kQ==}
+    engines: {node: '>=14.0.0'}
+    dev: true
+
   /tinyrainbow@3.0.3:
     resolution: {integrity: sha512-PSkbLUoxOFRzJYjjxHJt9xro7D+iilgMX/C9lawzVuYiIdcihh9DXmVibBe8lmcFrRi/VzlPjBxbN7rH24q8/Q==}
     engines: {node: '>=14.0.0'}
     dev: true
 
+  /tinyspy@3.0.2:
+    resolution: {integrity: sha512-n1cw8k1k0x4pgA2+9XrOkFydTerNcJ1zWCO5Nn9scWHTD+5tp8dghT2x1uduQePZTZgd3Tupf+x9BxJjeJi77Q==}
+    engines: {node: '>=14.0.0'}
+    dev: true
+
   /to-regex-range@5.0.1:
     resolution: {integrity: sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==}
     engines: {node: '>=8.0'}
@@ -3645,6 +4017,67 @@ packages:
       vfile-message: 4.0.3
     dev: false
 
+  /vite-node@2.1.9(@types/node@22.19.1):
+    resolution: {integrity: sha512-AM9aQ/IPrW/6ENLQg3AGY4K1N2TGZdR5e4gu/MmmR2xR3Ll1+dib+nook92g4TV3PXVyeyxdWwtaCAiUL0hMxA==}
+    engines: {node: ^18.0.0 || >=20.0.0}
+    hasBin: true
+    dependencies:
+      cac: 6.7.14
+      debug: 4.4.3
+      es-module-lexer: 1.7.0
+      pathe: 1.1.2
+      vite: 5.4.21(@types/node@22.19.1)
+    transitivePeerDependencies:
+      - '@types/node'
+      - less
+      - lightningcss
+      - sass
+      - sass-embedded
+      - stylus
+      - sugarss
+      - supports-color
+      - terser
+    dev: true
+
+  /vite@5.4.21(@types/node@22.19.1):
+    resolution: {integrity: sha512-o5a9xKjbtuhY6Bi5S3+HvbRERmouabWbyUcpXXUA1u+GNUKoROi9byOJ8M0nHbHYHkYICiMlqxkg1KkYmm25Sw==}
+    engines: {node: ^18.0.0 || >=20.0.0}
+    hasBin: true
+    peerDependencies:
+      '@types/node': ^18.0.0 || >=20.0.0
+      less: '*'
+      lightningcss: ^1.21.0
+      sass: '*'
+      sass-embedded: '*'
+      stylus: '*'
+      sugarss: '*'
+      terser: ^5.4.0
+    peerDependenciesMeta:
+      '@types/node':
+        optional: true
+      less:
+        optional: true
+      lightningcss:
+        optional: true
+      sass:
+        optional: true
+      sass-embedded:
+        optional: true
+      stylus:
+        optional: true
+      sugarss:
+        optional: true
+      terser:
+        optional: true
+    dependencies:
+      '@types/node': 22.19.1
+      esbuild: 0.21.5
+      postcss: 8.5.6
+      rollup: 4.52.4
+    optionalDependencies:
+      fsevents: 2.3.3
+    dev: true
+
   /vite@7.1.12(@types/node@24.10.1):
     resolution: {integrity: sha512-ZWyE8YXEXqJrrSLvYgrRP7p62OziLW7xI5HYGWFzOvupfAlrLvURSzv/FyGyy0eidogEM3ujU+kUG1zuHgb6Ug==}
     engines: {node: ^20.19.0 || >=22.12.0}
@@ -3696,6 +4129,64 @@ packages:
       fsevents: 2.3.3
     dev: true
 
+  /vitest@2.1.9(@types/node@22.19.1):
+    resolution: {integrity: sha512-MSmPM9REYqDGBI8439mA4mWhV5sKmDlBKWIYbA3lRb2PTHACE0mgKwA8yQ2xq9vxDTuk4iPrECBAEW2aoFXY0Q==}
+    engines: {node: ^18.0.0 || >=20.0.0}
+    hasBin: true
+    peerDependencies:
+      '@edge-runtime/vm': '*'
+      '@types/node': ^18.0.0 || >=20.0.0
+      '@vitest/browser': 2.1.9
+      '@vitest/ui': 2.1.9
+      happy-dom: '*'
+      jsdom: '*'
+    peerDependenciesMeta:
+      '@edge-runtime/vm':
+        optional: true
+      '@types/node':
+        optional: true
+      '@vitest/browser':
+        optional: true
+      '@vitest/ui':
+        optional: true
+      happy-dom:
+        optional: true
+      jsdom:
+        optional: true
+    dependencies:
+      '@types/node': 22.19.1
+      '@vitest/expect': 2.1.9
+      '@vitest/mocker': 2.1.9(vite@5.4.21)
+      '@vitest/pretty-format': 2.1.9
+      '@vitest/runner': 2.1.9
+      '@vitest/snapshot': 2.1.9
+      '@vitest/spy': 2.1.9
+      '@vitest/utils': 2.1.9
+      chai: 5.3.3
+      debug: 4.4.3
+      expect-type: 1.2.2
+      magic-string: 0.30.19
+      pathe: 1.1.2
+      std-env: 3.9.0
+      tinybench: 2.9.0
+      tinyexec: 0.3.2
+      tinypool: 1.1.1
+      tinyrainbow: 1.2.0
+      vite: 5.4.21(@types/node@22.19.1)
+      vite-node: 2.1.9(@types/node@22.19.1)
+      why-is-node-running: 2.3.0
+    transitivePeerDependencies:
+      - less
+      - lightningcss
+      - msw
+      - sass
+      - sass-embedded
+      - stylus
+      - sugarss
+      - supports-color
+      - terser
+    dev: true
+
   /vitest@4.0.3(@types/node@24.10.1):
     resolution: {integrity: sha512-IUSop8jgaT7w0g1yOM/35qVtKjr/8Va4PrjzH1OUb0YH4c3OXB2lCZDkMAB6glA8T5w8S164oJGsbcmAecr4sA==}
     engines: {node: ^20.0.0 || ^22.0.0 || >=24.0.0}