MCP server · Chat

OpenAI Assistant MCP server

Let your AI chat with OpenAI assistants and keep track of those conversations for you.

This is a small helper that lets your AI assistant (like Claude) talk to OpenAI assistants. You ask your AI something, and it can pass the question to a GPT-based assistant and bring the answer back. It is handy if you already use OpenAI assistants and want your everyday AI to reach them without switching apps.

What is an MCP server? The 30-second version

On its own, your AI can only chat with you. An MCP server is a small helper program that gives your AI a new skill or a connection to another service. This one connects your AI to OpenAI assistants, so it can create them, list them, and have back-and-forth conversations with them when you ask. Think of it as a bridge between the AI you talk to and the OpenAI assistants you have set up.

What this MCP server does

You ask your AI to talk to an OpenAI assistant, and it uses this helper behind the scenes. The helper talks to OpenAI on your behalf, sends your message to the assistant, and streams the reply back as it is written. It also keeps a local list of your conversation threads, so you can come back to the same conversation later. You see the assistant's answer appear in your chat, and you can keep going from there.

Flow diagram: you ask your AI “Ask Recipe Helper what I can make with eggs and rice”, the OpenAI Assistant MCP server connects it to OpenAI Assistant, and you get back the assistant's answer in your chat.

Click to zoom

What you can do with it

Create a new OpenAI assistant with a name, instructions, and model
List all the assistants tied to your OpenAI account
Look up the details of a specific assistant
Update an assistant's name, instructions, or model
Start a named conversation thread and reuse it later
List your saved threads with their names and last used time
Ask an assistant a question inside a thread and get the reply

Try asking your AI

“Create a new OpenAI assistant called Recipe Helper that suggests dinners from what is in my fridge”
“List all my OpenAI assistants”
“Start a new thread called Weekly Planning and ask the assistant to help me plan my week”
“Ask the Recipe Helper assistant in my Weekly Planning thread what I can make with eggs, rice, and spinach”

What it gives back to you

You get the assistant's reply as text in your chat, streamed in as it is written. When you list assistants or threads, you get a simple list with names, IDs, and last used times. When you create or update something, you get a short confirmation with the details. Everything stays in the chat, so you can read it and keep the conversation going.

Before you start

What you need

An OpenAI API key (a kind of password for apps; you get it from your OpenAI account, and it may cost money to use)
Python installed on your computer
The Claude desktop app or another tool that supports MCP servers

Good to know

Using OpenAI assistants costs money through your OpenAI account, and deleting a thread removes it for good.

Install it with your AI

Add OpenAI Assistant MCP server to your AI, no technical skills needed

You don't install anything by hand. You copy one prompt, paste it into an AI that can work on your computer, and it checks, installs and connects the server for you, asking you when it needs something.

Sign in to get the install prompt

Members get a ready-made prompt that lets the Claude desktop app check OpenAI Assistant MCP server, install it and connect it for them, step by step. You don't need any technical skills: you copy, paste and answer a few questions. Your connected AI can also find and install any of the 4,066 MCP servers here for you.