OpenFeature MCP Server

OpenFeature MCP Local Server (stdio)

Warning

This project is in active development and intended for testing only. APIs, prompts, and behavior may change without notice. Do not use in production.

A local Model Context Protocol (MCP) server that provides OpenFeature SDK installation guidance over stdio.

Features

No Authentication Required: Simplified implementation without OAuth or user management
OpenFeature SDK Installation Guides: Fetch installation prompts for various OpenFeature SDKs
MCP stdio Transport: Intended for local usage by MCP-compatible clients

Configure your AI client (local)

Cursor

Add to ~/.cursor/mcp_settings.json:

{
  "mcpServers": {
    "OpenFeature": {
      "command": "npx",
      "args": ["-y", "@openfeature/mcp"]
    }
  }
}

VS Code (Continue)

Add to .continue/config.json:

{
  "mcpServers": {
    "OpenFeature": {
      "command": "npx",
      "args": ["-y", "@openfeature/mcp"]
    }
  }
}

Claude Code (CLI)

Add the server via CLI:

claude mcp add --transport stdio openfeature npx -y @openfeature/mcp

Then manage the connection in the CLI with /mcp.

Windsurf

In the "Manage MCP servers" raw config, add:

{
  "mcpServers": {
    "OpenFeature": {
      "command": "npx",
      "args": ["-y", "@openfeature/mcp"]
    }
  }
}

Claude Desktop

Edit your Claude Desktop config and add:

{
  "mcpServers": {
    "openfeature": {
      "command": "npx",
      "args": ["-y", "@openfeature/mcp"]
    }
  }
}

Restart Claude Desktop after saving.

NPM Global install (optional)

If you prefer a global install instead of NPX:

npm install -g @openfeature/mcp

Now in your MCP config use openfeature-mcp as the command:

{
  "mcpServers": {
    "openfeature": {
      "command": "openfeature-mcp"
    }
  }
}

All logs are written to stderr. The MCP protocol messages use stdout.

Available Tools

`install_openfeature_sdk`

Fetches and returns OpenFeature SDK install prompt Markdown for a given technology from the bundled prompts.

Parameters:

technology (string enum): One of the supported technologies listed below

**Supported Technologies (bundled):

android
dotnet
go
ios
java
javascript
nestjs
nodejs
php
python
react
ruby

Development

Prerequisites

Node.js 18+

Setup

Install dependencies:
npm install
Add or edit install guides in the prompts/ folder (Markdown). These are bundled at build time.
Build prompts bundle:
npm run build-prompts
Build TypeScript:
npm run build
Run locally (binary entrypoint):
node dist/cli.js

Deploy Server

HTTP connection URL

security - not tested

license - permissive license

quality - not tested

How are these scores calculated?

remote-capable server

The server can be hosted and run remotely because it primarily relies on remote services or has no dependency on the local environment.

Tools

install_openfeature_sdk

Provides OpenFeature SDK installation guidance through MCP tool calls. Enables AI clients to fetch installation prompts and setup instructions for various OpenFeature SDKs across different programming languages and frameworks.

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