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Arize Phoenix MCP Server

Inspect traces, manage prompts, curate datasets, and run experiments using , an open-source AI and LLM observability tool.

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Arize Phoenix MCP Server

NPM Version License Add Arize Phoenix MCP server to Cursor

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.

Community

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License

Apache 2.0

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