Enhance MCP server context management and documentation

- Added support for pre-configured context in MCP server commands, allowing users to specify `--pulsar-instance` and `--pulsar-cluster` flags.
- Updated `RegisterContextTools` function to conditionally skip context tool registration based on provided CLI flags, improving usability.
- Enhanced README.md with new command examples and notes regarding context management behavior when using specific flags.
- Added comments in the code for better clarity on the context management logic.

Author: freeznet

README.md

@@ -89,6 +89,10 @@ If you want to access to your StreamNative Cloud, you will need to have followin
 # Start MCP server with StreamNative Cloud authentication
 bin/snmcp stdio --organization my-org --key-file /path/to/key-file.json
 
+# Start MCP server with StreamNative Cloud authentication and pre-configured context
+# When --pulsar-instance and --pulsar-cluster are provided, context management tools are disabled
+bin/snmcp stdio --organization my-org --key-file /path/to/key-file.json --pulsar-instance my-instance --pulsar-cluster my-cluster
+
 # Start MCP server with external Kafka
 bin/snmcp stdio --use-external-kafka --kafka-bootstrap-servers localhost:9092 --kafka-auth-type SASL_SSL --kafka-auth-mechanism PLAIN --kafka-auth-user user --kafka-auth-pass pass --kafka-use-tls --kafka-schema-registry-url https://sr.local --kafka-schema-registry-auth-user user --kafka-schema-registry-auth-pass pass
 
@@ -106,6 +110,10 @@ docker run -i --rm -e SNMCP_ORGANIZATION=my-org -e SNMCP_KEY_FILE=/key.json -v /
 # Start MCP server with SSE and StreamNative Cloud authentication
 snmcp sse --http-addr :9090 --http-path /mcp --organization my-org --key-file /path/to/key-file.json
 
+# Start MCP server with SSE and pre-configured StreamNative Cloud context
+# When --pulsar-instance and --pulsar-cluster are provided, context management tools are disabled
+snmcp sse --http-addr :9090 --http-path /mcp --organization my-org --key-file /path/to/key-file.json --pulsar-instance my-instance --pulsar-cluster my-cluster
+
 # Start MCP server with SSE and external Kafka
 snmcp sse --http-addr :9090 --http-path /mcp --use-external-kafka --kafka-bootstrap-servers localhost:9092
 
@@ -235,6 +243,8 @@ The StreamNative MCP Server allows you to enable or disable specific groups of f
 | `streamnative-cloud`| Manage StreamNative Cloud context and check resource logs         | [streamnative_cloud.md](docs/tools/streamnative_cloud.md) |
 | `functions-as-tools`     | Dynamically exposes deployed Pulsar Functions as invokable MCP tools, with automatic input/output schema handling. | [functions_as_tools.md](docs/tools/functions_as_tools.md)  |
 
+> **Note:** When using `--pulsar-instance` and `--pulsar-cluster` flags together, context management tools (`sncloud_context_use_cluster`) are automatically disabled since the context is pre-configured.
+
 You can combine these features as needed using the `--features` flag. For example, to enable only Pulsar client features:
 ```bash
 # Enable only Pulsar client features

pkg/cmd/mcp/server.go

@@ -54,7 +54,9 @@ func newMcpServer(_ context.Context, configOpts *ServerOptions, logrusLogger *lo
 
 			s = mcpServer.MCPServer
 			mcp.RegisterPrompts(s)
-			mcp.RegisterContextTools(s, configOpts.Features)
+			// Skip context tools if pulsar instance and cluster are provided via CLI
+			skipContextTools := snConfig.Context.PulsarInstance != "" && snConfig.Context.PulsarCluster != ""
+			mcp.RegisterContextTools(s, configOpts.Features, skipContextTools)
 			mcp.StreamNativeAddLogTools(s, configOpts.ReadOnly, configOpts.Features)
 			mcp.StreamNativeAddResourceTools(s, configOpts.ReadOnly, configOpts.Features)
 		}

pkg/mcp/sncontext_tools.go

@@ -29,10 +29,11 @@ import (
 	"github.com/streamnative/streamnative-mcp-server/pkg/common"
 )
 
-func RegisterContextTools(s *server.MCPServer, features []string) {
+func RegisterContextTools(s *server.MCPServer, features []string, skipContextTools bool) {
 	if !slices.Contains(features, string(FeatureStreamNativeCloud)) && !slices.Contains(features, string(FeatureAll)) {
 		return
 	}
+
 	// Add whoami tool
 	whoamiTool := mcp.NewTool("sncloud_context_whoami",
 		mcp.WithDescription("Display the currently logged-in service account. "+
@@ -50,7 +51,10 @@ func RegisterContextTools(s *server.MCPServer, features []string) {
 			mcp.Description("The name of the pulsar cluster to use"),
 		),
 	)
-	s.AddTool(setContextTool, handleSetContext)
+	// Skip registering context tools if context is already provided
+	if !skipContextTools {
+		s.AddTool(setContextTool, handleSetContext)
+	}
 
 	// Add available-contexts tool
 	availableContextsTool := mcp.NewTool("sncloud_context_available_clusters",