Arize Phoenix MCP Server

Phoenix MCP Server is an implementation of the Model Context Protocol for the Arize Phoenix platform. It provides a unified interface to Phoenix's capabilites.

You can use Phoenix MCP Server for:

• Projects Management: List and explore projects that organize your observability data
• Spans & Annotations: Retrieve spans and their annotations for analysis and debugging
• Prompts Management: Create, list, update, and iterate on prompts
• Datasets: Explore datasets, and syntesize new examples
• Experiments: Pull experiment results and visualize them with the help of an LLM

Don't see a use-case covered? @arizeai/phoenix-mcp is open-source! Issues and PRs welcome.

Installation

This MCP server can be used using npx and can be directly integrated with clients like Claude Desktop, Cursor, and more.

{
  "mcpServers": {
    "phoenix": {
      "command": "npx",
      "args": [
        "-y",
        "@arizeai/phoenix-mcp@latest",
        "--baseUrl",
        "https://my-phoenix.com",
        "--apiKey",
        "your-api-key"
      ]
    }
  }

Development

Install

This package is managed via a pnpm workspace.

// From the /js/ directory
pnpm install
pnpm build

This only needs to be repeated if dependencies change or there is a change to the phoenix-client.

Building

To build the project:

pnpm build

Development Mode

To run in development mode:

pnpm dev

Debugging

You can build and run the MCP inspector using the following:

pnpm inspect

Environment Variables

When developing, the server requires the following environment variables:

• PHOENIX_API_KEY: Your Phoenix API key
• PHOENIX_BASE_URL: The base URL for Phoenix

Make sure to set these in a .env file. See .env.example.

License

Apache 2.0