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LaunchDarkly local MCP server

The local Model Context Protocol (MCP) server for LaunchDarkly federal and European Union (EU) environments.

<div align="left"> <a href="https://opensource.org/licenses/MIT"> <img src="https://img.shields.io/badge/License-MIT-blue.svg" style="width: 100px; height: 28px;" /> </a> </div>

[!IMPORTANT] Use the LaunchDarkly hosted MCP server where available

LaunchDarkly strongly recommends using the hosted MCP server where it is available. The hosted server is more feature complete and receives more frequent updates than this self-managed server.

LaunchDarkly provides this self-managed MCP server for LaunchDarkly EU or Federal instances, which do not yet support the hosted MCP.

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Table of Contents

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• LaunchDarkly local MCP server
  • Installation
  • Requirements
  • Available Resources and Operations
  • Available Environments
  • Contributions
  • About LaunchDarkly

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Installation

This MCP server can be installed in any AI client that supports the MCP protocol. Refer to your AI client's instructions if it isn't listed here.

Cursor installation steps

Create a .cursor/mcp.json file in your project root with the following content:

{
  "mcpServers": {
    "LaunchDarkly": {
      "command": "npx",
      "args": [
        "-y", "--package", "@launchdarkly/mcp-server", "--", "mcp", "start",
        "--api-key", "api-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
      ]
    }
  }
}

Specify your API key as found on LaunchDarkly's Authorization page.

Claude installation steps

Add the following server definition to your claude_desktop_config.json file:

{
  "mcpServers": {
    "LaunchDarkly": {
      "command": "npx",
      "args": [
        "-y", "--package", "@launchdarkly/mcp-server", "--", "mcp", "start",
        "--api-key", "api-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
      ]
    }
  }
}

Specify your API key as found on LaunchDarkly's Authorization page.

Qodo Gen installation steps

1. Open Qodo Gen chat panel in VSCode or IntelliJ.
2. Click Connect more tools.
3. Click + Add new MCP.
4. Add the following configuration:

{
  "mcpServers": {
    "LaunchDarkly": {
      "command": "npx",
      "args": [
        "-y", "--package", "@launchdarkly/mcp-server", "--", "mcp", "start",
        "--api-key", "api-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
      ]
    }
  }
}

Specify your API key as found on LaunchDarkly's Authorization page.

1. Click Save.

GitHub Copilot CLI installation steps

Use the Copilot CLI to interactively add the MCP server:

/mcp add

Or create/edit ~/.copilot/mcp-config.json with the following content:

{
  "mcpServers": {
    "LaunchDarkly": {
      "command": "npx",
      "args": [
        "-y", "--package", "@launchdarkly/mcp-server", "--", "mcp", "start",
        "--api-key", "api-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
      ]
    }
  }
}

Specify your API key as found on LaunchDarkly's Authorization page.

For more information, see the GitHub Copilot CLI documentation.

Standalone binary installation steps

You can also run the MCP server as a standalone binary with no additional dependencies. You must pull these binaries from available GitHub releases while specifying the appropriate tag value:

curl -L -o mcp-server https://github.com/launchdarkly/mcp-server/releases/download/{tag}/mcp-server-bun-darwin-arm64 && \
chmod +x mcp-server

Installation steps from a local clone

You can also run the MCP server locally by cloning this repository. Once cloned, you'll need to install dependencies (npm install) and build the server (npm run build).

Then, configure your server definition to reference your local clone. For example:

{
  "mcpServers": {
    "launchdarkly": {
      "command": "node",
      "args": [
        "/path/to/mcp-server/bin/mcp-server.js", "start",
        "--api-key", "api-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
      ]
    }
  }
}

Installation steps using environment variables

Some AI clients allow for accessing environment variables within MCP configurations. In AI clients where this is supported, you can configure your MCP server to read from an environment variable like MCP_LD_TOKEN as follows:

{
  "mcpServers": {
    "launchdarkly": {
      "command": "npx",
      "args": [
        "-y", "--package", "@launchdarkly/mcp-server", "--", "mcp", "start",
        "--api-key", "$LD_ACCESS_TOKEN"
      ],
      "env": {
        "LD_ACCESS_TOKEN": "MCP_LD_TOKEN"
      }
    }
  }
}

Installation steps for Docker

If installing the MCP server from the AWS Markeplace, pull the image using an authenticated role using the provided instructions in the marketplace listing.

To run the container:

docker run --rm -p 127.0.0.1:8080:8080 709825985650.dkr.ecr.us-east-1.amazonaws.com/launchdarkly/mcp --api-key api-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx --auth-token "$MCP_AUTH_TOKEN"
```…