LaunchDarkly's Model Context Protocol (MCP) Server

The official Model Context Protocol (MCP) server for LaunchDarkly.

Table of Contents

LaunchDarkly's Model Context Protocol (MCP) Server

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

Open Qodo Gen chat panel in VSCode or IntelliJ.
Click Connect more tools.
Click + Add new MCP.
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.

Click Save.

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"
      ]
    }
  }
}

Requirements

For supported JavaScript runtimes, please consult RUNTIMES.md.

Available Resources and Operations

Available methods

aiConfigs

getTargeting - Show an AI Config's targeting
updateTargeting - Update AI Config targeting
list - List AI Configs
create - Create new AI Config
delete - Delete AI Config
get - Get AI Config
update - Update AI Config
createVariation - Create AI Config variation
deleteVariation - Delete AI Config variation
getVariation - Get AI Config variation
updateVariation - Update AI Config variation

featureFlags

list - List feature flags
create - Create a feature flag
get - Get feature flag
patch - Update feature flag
delete - Delete feature flag

Available Environments

Most customer accounts run on LaunchDarkly's commercial (default) environment. Customers on other environments can specify the --server-url argument to connect to the appropriate environment. For example, customers on LaunchDarkly's Federal environment should specify the --server-url https://app.launchdarkly.us argument when starting their MCP server.

Environment	Server URL
Commercial (Default)	`https://app.launchdarkly.com`
Federal	`https://app.launchdarkly.us`
EU	`https://app.eu.launchdarkly.com`

Contributions

While we value open-source contributions to this SDK, this library is generated programmatically. Any manual changes added to internal files will be overwritten on the next generation. We look forward to hearing your feedback. Feel free to open a PR or an issue with a proof of concept and we'll do our best to include it in a future release.

About LaunchDarkly

LaunchDarkly is a continuous delivery platform that provides feature flags as a service and allows developers to iterate quickly and safely. We allow you to easily flag your features and manage them from the LaunchDarkly dashboard. With LaunchDarkly, you can:
LaunchDarkly provides feature flag SDKs for a wide variety of languages and technologies. Read our documentation for a complete list.
Explore LaunchDarkly
- Sign up for a free LaunchDarkly account
- launchdarkly.com for more information
- launchdarkly.com/docs for our documentation and SDK reference guides
- launchdarkly.com/docs/api for our API documentation
- blog.launchdarkly.com for the latest product updates

License

launchdarkly/mcp-server

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