jaeger-mcp

MCP server for Jaeger distributed tracing. Give Claude (or any MCP-capable agent) read access to your trace data — search traces, inspect spans, map service dependencies — without leaving the conversation.

Why another Jaeger MCP?

The existing Jaeger integrations require a running UI or custom scripts. This server:

• Speaks the standard Model Context Protocol over stdio — works with Claude Desktop, Claude Code, Cursor, and any MCP client.
• Is read-only: all 5 tools carry readOnlyHint: true — zero risk of modifying trace data.
• Returns dual-channel output: structured JSON (structuredContent) for programmatic use + Markdown (content) for human-readable display.
• Has actionable error messages that name the exact env var to fix and suggest a next step.
• Supports Bearer token, HTTP Basic auth, or no auth (common for internal deployments).

Tools

Installation

pip install jaeger-mcp

Or run directly without installing:

uvx jaeger-mcp

Configuration

All configuration is via environment variables:

Copy .env.example to .env and fill in your values.

Claude Desktop / Claude Code setup

Add to your MCP config (claude_desktop_config.json or .claude/mcp.json):

{
  "mcpServers": {
    "jaeger": {
      "command": "jaeger-mcp",
      "env": {
        "JAEGER_URL": "https://jaeger.example.com",
        "JAEGER_TOKEN": "your-token-here"
      }
    }
  }
}

Or with uvx (no install required):

{
  "mcpServers": {
    "jaeger": {
      "command": "uvx",
      "args": ["jaeger-mcp"],
      "env": {
        "JAEGER_URL": "https://jaeger.example.com"
      }
    }
  }
}

Docker

docker run --rm -e JAEGER_URL=https://jaeger.example.com jaeger-mcp

Example queries

Once configured, ask Claude:

• "What services does Jaeger know about?"
• "Find traces with HTTP 500 errors in order-service from the last hour"
• "Show me the slowest traces (over 2 seconds) for GET /checkout"
• "What caused the error in trace abcdef1234567890?"
• "Map the service dependency graph for the last 7 days"
• "Which services call postgres most frequently?"

Tool usage guide

jaeger_list_services

Returns all service names Jaeger has seen. Start here when you don't know which services are instrumented. Output is capped at 500 services with a truncation hint.

`jaeger_list_opera

... View full README on GitHub