Create an AI agent with its own email address

One message to a Claude that has the Fine Structure connector builds this, publishes it, and returns a live link. You get an agent with a real mailbox that reads incoming mail, drafts replies to routine messages, and asks before sending.

The prompt

Paste this into Claude exactly as it is, or open it from the gallery, where the same prompt is available in eighteen languages and opens the Claude desktop app already typed.

On Fine Structure, create an agent with its own email address that reads incoming mail, drafts a reply for anything routine, and asks me before sending.

What happens after you send it

  1. Claude calls create_app and generates the pages, the database tables and the styling.
  2. It polls the build until it finishes, which usually takes a few minutes.
  3. It publishes the app and returns a public link that works for anyone you send it to.
  4. Anything you want changed is another sentence in the same conversation, and every change keeps a saved version you can roll back to.

Questions people ask

What address does it get?

A Fine Structure address derived from the agent's name, which you can rename later.

Will it send something I did not see?

Not unless you tell it to. The default is that it drafts and waits for your approval.

Connecting takes about two minutes

  1. Open claude.ai and sign in. A free Claude account is enough; free accounts can add one custom connector.
  2. Go to Settings, then Connectors, choose Browse connectors, and search for Fine Structure. Click Connect.
  3. Sign in with a Fine Structure account (the free tier is enough, no credit card) and approve.
  4. Back in the chat, ask for what you want built. The result is published at a public link.

In Claude Code: claude mcp add --transport http finestructure https://finestructure.ai/api/mcp, then run /mcp to authenticate. The full guide covers the desktop app and every other client.

What it costs

A free Fine Structure account builds and publishes this at a free subdomain, with no credit card. A free Claude account can add one custom connector. Paid plans add your own domain and higher limits, detailed on the pricing page.

Where this is listed

Fine Structure is a Community connector in Anthropic's connector directory (listed, not verified or endorsed), and the same server is recorded in the official MCP registry as ai.finestructure/fine-structure, on Smithery and on Glama. The endpoint answers publicly at /api/mcp/manifest, so any claim on this page can be checked against the live tool list.

More ready-made builds: the full gallery. More answers: every question.