mcp-mail

Meta Muse

Checked 2026-11-02 against public setup guides; Meta’s own documentation is still sparse.

Muse has no “add MCP server” setting. You ask it in chat to build a Custom Connector; it writes an MCP client on its cloud VM, tests it and saves it as a skill. The server must be public HTTPS speaking Streamable HTTP (a localhost or stdio server is unreachable from Muse). A static bearer token is the smoothest auth.

1. Create a token client:

   mcp-mail clients add muse --for muse          # read-draft preset, token printed once
   

2. In Muse, send:

   Build a Custom Connector that acts as an MCP client for my email. Server URL: https://mail.example.com/mcp Transport: remote streamable HTTP Auth: HTTP header Authorization: Bearer <token>. I’ll paste the token in the secure credential prompt, not in chat.

3. Paste the token only into Muse’s secure credential prompt.

Muse can then list, search and read mail and save drafts. Grant send only if you need it.

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