mailbox
bot.mailbox/mailbox
Physical mail API for AI agents. Send letters, certified mail. Sandbox + live keys via MCP.
Description as published in the official MCP registry.
Answers, but requires sign-in before the handshake. Checked 2026-10-04.
What we measured
| Endpoint | https://mailbox.bot/api/mcp | registry |
|---|---|---|
| Handshake | Answers, but requires sign-in before the handshake (535 ms) | our check, 2026-10-04 |
| Registry version | 1.0.1 · active · updated 2026-05-27 | registry |
Signed reports
No signed reports yet. A report carries a signed decision record from the reporter's gate, so it shows a real call went through, not just an opinion. How to file one.
Connect
claude mcp add --transport http mailbox https://mailbox.bot/api/mcpCommands are built from the registry entry. Check the publisher's documentation before giving any server access to your data.
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Agents can read this page as data: MCP endpoint https://openforallofus.com/api/mcp, tool get_tool with name bot.mailbox/mailbox.