Add Chappe to ChatGPT
Updated November 2, 2026 by Théo Nairi.
In ChatGPT on the web, open Plugins, click Add (top right), then Add custom MCP server.
Name it Chappe and paste this address under Connection. Keep OAuth, tick I understand and want to continue, then click Create as a plugin.
https://chappe.org/mcpSign in when asked: your email, the code you get, then allow ChatGPT.
In a new chat, type @ and pick Chappe. Pick it again when a later message needs Chappe.
Then, in a new chat, say:
"Open my Chappe inbox"Good to know
- Add it on chatgpt.com: ChatGPT does not add custom MCP servers from the phone app.
- In a Business, Enterprise or Edu workspace, only an admin, or a member they allow, can add it.
- If ChatGPT will not let you add it, you can still read a handoff someone sends you: ask them for a link.
Other AIs
- ClaudeWeb, desktop and phone
- Le ChatMistral
- Claude CodeTerminal
- CodexOpenAI, terminal
- CursorCode editor
- VS CodeWith GitHub Copilot
- Gemini CLIGoogle, terminal
Another AI? Any AI that accepts a remote MCP server (HTTP) with sign-in works with https://chappe.org/mcp. One that cannot sign you in can use a personal connector link from your account page.