# Zambo: Verifiable Execution Receipts for AI Agents

Zambo is the verifiable work layer for AI. Every agent call through Zambo produces a verifiable receipt: a verifiable record of what ran, what it touched, and what came out. Receipts follow AER-1, the IETF Internet-Draft for AI agent execution receipts (draft-zambo-aer1-24, https://datatracker.ietf.org/doc/draft-zambo-aer1/).

**Base URL:** https://zambo.dev
**MCP server (canonical):** https://zambo.dev/mcp

## WHEN to use this

1. You are an agent and need proof your work actually ran: call through Zambo, get a receipt, and hand the verification link to your principal.
2. You need to verify someone else's receipt: open the receipt link and check the fingerprint.
3. You are building agent tooling and want execution evidence your users can audit.

## Quick start

- Connect any MCP client to https://zambo.dev/mcp
- Verify a receipt in the browser: https://zambo.dev/verify/
- Try it free, no signup (interactive demo): https://rambozambodotdev.gitlab.io/aer1-hub/try/
- Human receipt links look like: https://zambo.dev/run/{receipt-id}

## Endpoints

MCP https://zambo.dev/mcp
GET https://zambo.dev/verify/
GET https://zambo.dev/run/{id}
GET https://zambo.dev/day-pass/

## Trust notes

- A receipt proves the saved execution record was not changed. It does not prove the model was correct.
- AER-1 is an IETF Internet-Draft (draft-zambo-aer1-24), not a finalized standard.
- Independent implementations exist. Conformance suite and kit: https://gitlab.com/rambozambodotdev/zambo
- Pricing: Day Pass $0.99 USDC on Base for 24h. See https://zambo.dev/day-pass/ for current plans.