An MCP server that gives you a receipt for every tool call

Last updated: 2026-10-05

Plain answers about using Zambo, keeping your work, and checking receipts. A receipt shows what Zambo recorded for one call. It does not prove the answer is right.

Zambo is a hosted MCP server. When your AI app uses one of its tools, it returns a receipt showing what was asked, what came back, and when.

Share the receipt link so anyone can check that the recorded information has not changed. A receipt shows what Zambo recorded; it does not prove the AI's answer was right or that an outside action happened.

It works with ChatGPT, Claude, Cursor, and any app that supports MCP. The full live catalog has 138 tools, and 20 free calls per metered tool each day are available without signing up.

The receipt format is AER-1, an open draft spec for recording AI tool calls. It gives people a portable way to review a record; it does not certify an AI result.

Add Zambo to your app, choose a tool, and open its receipt to review what happened. Share the same link when another person needs to check the record.