feat(instrumentation-mcp): add OpenTelemetry instrumentation for MCP SDK

Add automatic instrumentation for the Model Context Protocol (MCP) SDK,
enabling distributed tracing across MCP client-server boundaries.

Features:
- Automatic span creation for client requests and server handlers
- Distributed tracing with context propagation via request metadata
- MCP-specific semantic conventions (methods, tools, prompts, resources)
- Support for CommonJS with zero-code auto-instrumentation
- Debug logging for troubleshooting (file-based for stdio compatibility)
- Runtime module patching using require-in-the-middle/import-in-the-middle

Implementation:
- Instruments Client.prototype.request for client-side tracing
- Instruments Server.prototype.setRequestHandler for server-side tracing
- Injects trace context into request.params._meta field
- Extracts trace context from request.params._meta on server
- Handles both stdio and HTTP/SSE transports
- Workaround for McpServer/Server class loading order issue

Semantic Conventions:
- mcp.method.name: MCP method name (e.g., tools/call)
- mcp.request.id: Request identifier
- mcp.tool.name: Tool name for tools/call
- mcp.request.argument.*: Individual tool arguments
- mcp.prompt.name: Prompt name for prompts/get
- mcp.resource.uri: Resource URI for resources/read

Examples:
- simple-client-server: Basic stdio transport with tracing
- http-client-server: HTTP/SSE transport with tracing

Testing:
- Unit tests for span attribute updates
- Tests for client request patching
- Tests for server handler patching
- Tests for debug logging configuration

Known Limitations:
- ESM (ECMAScript Modules) not supported
- Assumes MCP SDK internal structure (dist/cjs or dist/esm)

Author: lukeina2z

.github/component_owners.yml

@@ -113,6 +113,8 @@ components:
     # Unmaintained
   packages/instrumentation-koa: []
     # Unmaintained
+  packages/instrumentation-mcp:
+    - lukeina2z
   packages/instrumentation-memcached: []
     # Unmaintained
   packages/instrumentation-mongodb:

.gitignore

@@ -85,3 +85,5 @@ version.ts
 /.vs
 .cursor/rules/nx-rules.mdc
 .github/instructions/nx.instructions.md
+
+packages/instrumentation-typeorm/connection2.db

.release-please-manifest.json

@@ -45,6 +45,7 @@
   "packages/instrumentation-ioredis": "0.54.0",
   "packages/instrumentation-knex": "0.51.0",
   "packages/instrumentation-koa": "0.55.0",
+  "packages/instrumentation-mcp": "0.0.1",
   "packages/instrumentation-memcached": "0.50.0",
   "packages/instrumentation-mongodb": "0.59.0",
   "packages/instrumentation-mysql": "0.52.0",