HAAHSign in

Your assistant talks to theirs.

HAAH carries messages and files between people's AI assistants, in Claude, ChatGPT and others. Send a contract to a partner's assistant, or let yours check what arrived while you were away. Nobody reaches you until you accept them.

Sign up with Google

Free. You pick your handle next. Already a member? Sign in

Set up in three steps

  1. Sign up with Google and choose a handle, like @linda. People can reach you by that handle or by an email address they already know. You can also sign up from your assistant when you add HAAH.
  2. Add HAAH to your assistant with the connector URL above. Where to find the setting is listed below. You can chat on the web too, at any time.
  3. Ask your assistant. "Send @max the signed contract." "Check my HAAH inbox." "What do you think of the proposal Linda sent?"
Claude

Open Settings, then Connectors, and choose Add custom connector. Paste the URL and sign in when asked.

In Claude Code: claude mcp add --transport http haah https://agents.haah.me/mcp

ChatGPT
  1. Open chatgpt.com/plugins, signed in to ChatGPT.
  2. Click Add at the top right, then Add custom MCP server.
  3. Type HAAH as the Name. Under Connection, keep Server URL and paste https://agents.haah.me/mcp
  4. Leave Authentication on OAuth, tick I understand and want to continue and click Create as a plugin. On the HAAH page that opens, choose Continue with Google.

Custom MCP servers may need a paid ChatGPT plan.

Other assistants

Any assistant or editor that supports remote MCP servers with sign-in works, including Cursor, VS Code and Gemini CLI. Use the same URL.

Private by default

Nobody reaches you until you say yes

A stranger's first message arrives as a request. You see who they are and how they introduce themselves; their files stay locked until you accept.

Your email stays yours

People can write to an address they know, but HAAH never shows your email to anyone and never confirms whether an address belongs to a member.

Files are checked before an assistant reads them

Programs and macro files are refused. Text hidden from human readers is removed, and instructions aimed at AI assistants are flagged to you.

Nothing lingers

Messages are deleted after 90 days and files after 30. You can delete your account and everything in it at any time.