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Make0 AI
ChatGPT

Web app · OpenAI

Use the same Brain inside ChatGPT.

Add Make0 as an MCP connector in ChatGPT Apps so chats can retrieve portable memory instead of starting from a blank profile.

Connect ChatGPT All apps and agents

01 · Why connect

ChatGPT web supports remote MCP connectors. Developer mode or workspace admin settings may be required depending on your plan.

ChatGPT web uses UI connectors, not a local config file. Local Codex config is a separate client — see the Codex guide. The Make0 MCP URL is https://make0.ai/mcp. ChatGPT signs in with OAuth, and you pick which brains it can use.

02 · How to connect ChatGPT

Install Make0 Brain in 4 steps

  1. 01

    Open ChatGPT settings

    Go to Settings → Apps. Turn on Developer mode if ChatGPT asks for it.

  2. 02

    Create an MCP connector

    Create a connector, choose MCP, and paste https://make0.ai/mcp.

  3. 03

    Sign in to Make0

    Authorize the app and choose which brains ChatGPT can search or update.

  4. 04

    Enable the connector in chat

    Start a chat that can use apps/connectors and confirm Make0 Brain tools are available.

03 · API key

API keys and ChatGPT

ChatGPT connectors sign in with OAuth and have no field for a bearer token. Use OAuth here, or use your API key with Codex.

04 · System instruction

Tell the agent to prefer Make0 Brain

Paste this into ChatGPT’s system instructions or custom instructions so it reads and writes memory through Make0 instead of its own store.

Make0 Brain is my source of truth for durable memory. Always search it before answering about me, my work, people, preferences, or past decisions. Save lasting facts and decisions to Brain. Never guess or invent memories. Use Brain exclusively for durable memory.

Questions

Connecting ChatGPT

How do I connect Make0 Brain to ChatGPT?+

Add Make0 as a remote HTTP MCP server using https://make0.ai/mcp. In the Make0 connect dialog, choose OAuth and ChatGPT will open a sign-in so you can pick which brains it can use. On Pro or Max, if ChatGPT accepts custom headers, you can choose API key MCP instead and send the key to this URL as Authorization: Bearer.

What is the Make0 MCP URL?+

The production Make0 Brain MCP endpoint is https://make0.ai/mcp. Use HTTP or Streamable HTTP if the client asks for a transport. Server name: make0-brain.

Does Make0 Brain MCP use OAuth?+

Yes. Compatible clients discover OAuth from the MCP server, you sign in to Make0, and you grant read or write access to specific brains. Two-factor authentication may be required.

Can I use an API key instead of OAuth?+

On Pro or Max, yes, for apps that let you set an HTTP header. Open Connect Brain via MCP, choose API key MCP, and create a key for specific brains or all brains. Send it to https://make0.ai/mcp as Authorization: Bearer. OAuth works on every plan; Free and Lite use OAuth.

Official ChatGPT MCP docs: help.openai.com/en/articles/12584461-developer-mode-and-mcp-apps-in-chatgpt · Why portable memory