MCP OpenAI Server

A Model Context Protocol (MCP) server that lets you seamlessly use OpenAI's models right from Claude.

Features

• Direct integration with OpenAI's chat models

• Support for multiple models including:

  • gpt-4o

  • gpt-4o-mini

  • o1-preview

  • o1-mini

• Simple message passing interface

• Basic error handling

Related MCP server: OpenAI MCP Server

Prerequisites

• Node.js >= 18 (includes npm and npx)

• Claude Desktop app

• OpenAI API key

Installation

First, make sure you've got the Claude Desktop app installed and you've requested an OpenAI API key.

Add this entry to your claude_desktop_config.json (on Mac, you'll find it at ~/Library/Application\ Support/Claude/claude_desktop_config.json):

This config lets Claude Desktop fire up the OpenAI MCP server whenever you need it.

Usage

Just start chatting with Claude and when you want to use OpenAI's models, ask Claude to use them.

For example, you can say,

or,

The server currently supports these models:

• gpt-4o (default)

• gpt-4o-mini

• o1-preview

• o1-mini

Tools

1. openai_chat

   • Sends messages to OpenAI's chat completion API

   • Arguments:

     • messages: Array of messages (required)

     • model: Which model to use (optional, defaults to gpt-4o)

Problems

This is alpha software, so may have bugs. If you have an issue, check Claude Desktop's MCP logs:

Development

Requirements

• Node.js >= 18

• OpenAI API key

Verified Platforms

• macOS

• Linux

License

MIT

Author

mzxrai