feat(mcp): add MCP server foundation with protocol handler and tools #454
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shivasurya
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This was referenced Jan 10, 2026
Codecov Report❌ Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #454 +/- ##
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- Coverage 80.41% 76.54% -3.88%
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Files 85 89 +4
Lines 9370 9849 +479
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+ Hits 7535 7539 +4
- Misses 1527 2002 +475
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This was referenced Jan 10, 2026
SafeDep Report Summary
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Add basic structure for MCP server integration: - cmd/serve.go: New 'serve' command that builds index and starts server - mcp/types.go: JSON-RPC 2.0 and MCP protocol type definitions - mcp/server.go: Server struct skeleton (implementation in next commit) The serve command: - Initializes code graph (AST parsing) - Builds module registry - Builds call graph using 5-pass algorithm - Reports index stats to stderr - Starts MCP server on stdio (skeleton) Part 1/3 of MCP server PoC. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
Full implementation of MCP server protocol: - stdio reader/writer with JSON-RPC 2.0 - Request dispatch to appropriate handlers - initialize: Returns server info and capabilities - initialized: Acknowledgment (no response) - tools/list: Returns 6 tool definitions - tools/call: Dispatches to tool executor Includes: - Request timing logged to stderr - Client info logging on initialize - Basic error handling for parse/method errors - get_index_info tool working for smoke testing Other tools return "not yet implemented" - full implementation in Commit 3. Part 2/3 of MCP server PoC. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
Complete tool implementations for code intelligence queries: 1. get_index_info: Returns project stats (functions, edges, modules) 2. find_symbol: Finds symbols by name with metadata (type, params, decorators) 3. get_callers: Reverse call graph with call site locations 4. get_callees: Forward call graph with resolution status and type inference 5. get_call_details: Full call site info including arguments and resolution 6. resolve_import: Import path resolution with exact/short/partial matching Features: - Rich metadata in responses (file, line, return type, parameters) - Resolution status tracking (resolved vs unresolved with reasons) - Type inference information when available - Helpful error messages with suggestions - Multiple match handling with alternatives - Detailed tool descriptions with examples for AI assistant usage Part 3/3 of MCP server PoC. Ready for agent integration testing. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
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Summary
Implements Model Context Protocol (MCP) server for AI coding assistant integration.
Key features:
get_index_info,find_symbol,get_callers,get_callees,get_call_details,resolve_importpathfinder servecommand for stdio transportTools provided:
get_index_infofind_symbolget_callersget_calleesget_call_detailsresolve_importDesigned for Claude Code, Codex CLI, and other MCP-compatible assistants.