mcp-simple-openai-assistantMCP server that gives Claude ability to use OpenAI's GPTs assistants

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Reviewed by Daniel Nikulshyn·Updated July 2026

Overview

MCP Simple OpenAI Assistant is a server that enables other tools, like Claude, to interact with OpenAI's GPT assistants. It provides a suite of tools for managing and interacting with OpenAI assistants, including creating and listing assistants, retrieving and updating assistant information, and creating and deleting conversation threads. The server uses a streaming approach to provide real-time progress updates and avoids timeouts due to OpenAI assistants' slow responses. It also includes local persistence for threads, which allows easy management and reuse of conversation threads across sessions. This server is designed to work with tools like Claude Desktop and requires an OpenAI API key to be set in the environment for configuration. It is available for installation via Smithery and can be manually installed using pip.

Key features

create_assistant: Create a new assistant with a name, instructions, and model
list_assistants: List all available assistants associated with your API key
retrieve_assistant: Get detailed information about a specific assistant
update_assistant: Modify an existing assistant's name, instructions, or model
ask_assistant_in_thread: Send a message to an assistant within a thread and stream the response back in real-time

Pricing

Model: Free
Category: MCP Servers
Rating: No reviews yet

Use cases

Claude Desktop Integration

Integrate OpenAI assistants with Claude Desktop using the MCP Simple OpenAI Assistant server.

Conversational AI

Use OpenAI assistants to have conversations and get responses in real-time, managed through the MCP server.

Pros & Cons

Pros

Enables Claude to use OpenAI's GPT assistants
Provides real-time streaming capabilities for improved user experience
Manages conversation threads locally for easy reuse and management

Cons

Requires an OpenAI API key to be set in the environment
Manual installation can be complex, especially on Windows

Reviews

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Q&A

What are the main limitations of this tool?

It requires a valid OpenAI API key, and the manual installation process can be tricky, especially on Windows. The tool’s functionality is limited to managing assistants and threads; it does not provide additional AI features beyond those offered by OpenAI.

Asked by Ines Fernandes · Sep 27, 2025

How do I set up the server and authenticate with OpenAI?

Install via Smithery or manually, then set your OpenAI API key in the environment variable before starting the server. Once running, the server will use that key to create, list, and manage assistants through its API.

Asked by Jamal Carter · Sep 20, 2025

What does mcp-simple-openai-assistant add to a Claude Desktop setup?

It lets Claude use OpenAI’s GPT assistants by acting as a bridge server. It manages assistants, handles threads, and streams responses in real‑time, so users can interact with GPT models without leaving Claude.

Asked by Sofia Lindqvist · Aug 8, 2025