Jaeger MCP Server

MCP Server for Jaeger.

Prerequisites

• Node.js 18+

Related MCP server: jaeger-mcp

Quick Start

This MCP server (using STDIO transport) can be added to any MCP Client like VS Code, Claude, Cursor, Windsurf Github Copilot via the jaeger-mcp-server NPM package.

VS Code

{
  "servers": {
    "jaeger-mcp-server": {
      "command": "npx",
      "args": ["-y", "jaeger-mcp-server"],
      "envFile": "${workspaceFolder}/.env"
    }
  }
}

Claude Desktop

{
  "mcpServers": {
    "jaeger-mcp-server": {
      "command": "npx",
      "args": ["-y", "jaeger-mcp-server"],
      "env": {
        "JAEGER_URL": "<YOUR_JAEGER_HTTP_OR_GRPC_API_URL>"
      }
    }
  }
}

Configuration

Environment Variables

• JAEGER_URL: HTTP API (HTTP JSON (/api/v3/*)) or the gRPC API (gRPC/Protobuf (jaeger.api_v3.QueryService)) URL of the Jaeger instance to access.

• JAEGER_PORT: HTTP or gRPC API port of the Jaeger instance to access. The default value is 16685 for the gRPC API and 16686 for the HTTP API.

• JAEGER_AUTHORIZATION_HEADER: Authorization HTTP header to be added into the requests for querying traces over Jaeger API (for ex. Basic <Basic Auth Header>)

• JAEGER_PROTOCOL: API protocol of the Jaeger instance to access. Valid values are GRPC and HTTP. The default value is GRPC. Valid

Components

Tools

• get-operations: Gets the operations as JSON array of object with name and spanKind properties. Supports the following input parameters:

  • service:

    • Mandatory: true

    • Type: string

    • Description: Filters operations by service name

  • spanKind:

    • Mandatory: false

    • Type: string

    • Description: Filters operations by OpenTelemetry span kind (server, client, producer, consumer, internal)

• get-services: Gets the service names as JSON array of string. No input parameter supported.

• get-trace: Gets the spans by the given trace by ID as JSON array of object in the OpenTelemetry resource spans format.

  • traceId:

    • Mandatory: true

    • Type: string

    • Description: Filters spans by OpenTelemetry compatible trace id in 32-character hexadecimal string format

  • startTime:

    • Mandatory: false

    • Type: string

    • Description: The start time to filter spans in the RFC 3339, section 5.6 format, (e.g., 2017-07-21T17:32:28Z)

  • endTime:

    • Mandatory: false

    • Type: string

    • Description: The end time to filter spans in the RFC 3339, section 5.6 format, (e.g., 2017-07-21T17:32:28Z)

• find-traces: Searches the spans as JSON array of object in the OpenTelemetry resource spans format.

  • serviceName:

    • Mandatory: true

    • Type: string

    • Description: Filters spans by OpenTelemetry compatible trace id in 32-character hexadecimal string format

  • operationName:

    • Mandatory: false

    • Type: string

    • Description: The start time to filter spans in the RFC 3339, section 5.6 format, (e.g., 2017-07-21T17:32:28Z)

  • attributes:

    • Mandatory: false

    • Type: map<string, string | number | boolean>

    • Description: Filters spans by span attributes. Attributes can be passed in key/value format in JSON where keys can be string and values can be string, number (integer or double) or boolean. For example

      {
          "stringAttribute": "str",
          "integerAttribute": 123,
          "doubleAttribute": 123.456,
          "booleanAttribute": true,
      }

  • startTimeMin:

    • Mandatory: true

    • Type: string

    • Description: Start of the time interval (inclusive) in the RFC 3339, section 5.6 format, (e.g., 2017-07-21T17:32:28Z) for the query. Only traces with spans that started on or after this time will be returned.

  • startTimeMax:

    • Mandatory: true

    • Type: string

    • Description: End of the time interval (exclusive) in the RFC 3339, section 5.6 format, (e.g., 2017-07-21T17:32:28Z) for the query. Only traces with spans that started before this time will be returned.

  • durationMin:

    • Mandatory: false

    • Type: string

    • Description: Minimum duration of a span in milliseconds in the trace. Only traces with spans that lasted at least this long will be returned.

  • durationMax:

    • Mandatory: false

    • Type: string

    • Description: Maximum duration of a span in milliseconds in the trace. Only traces with spans that lasted at most this long will be returned.

  • searchDepth:

    • Mandatory: false

    • Type: number

    • Description: Defines the maximum search depth. Depending on the backend storage implementation, this may behave like an SQL LIMIT clause. However, some implementations might not support precise limits and a larger value generally results in more traces being returned.

Resources

N/A

Roadmap

• Support HTTP Stream transport protocol (SSE transport protocol is deprecated in favor of it) to be able to use the MCP server from remote.

• Support more tools which are not directly available over Jaeger API (orchestrating and pipelining multiple API endpoints)

Issues and Feedback

Please use GitHub Issues for any bug report, feature request and support.

Contribution

If you would like to contribute, please

• Fork the repository on GitHub and clone your fork.

• Create a branch for your changes and make your changes on it.

• Send a pull request by explaining clearly what is your contribution.

Tip: Please check the existing pull requests for similar contributions and consider submit an issue to discuss the proposed feature before writing code.

License

Licensed under MIT.