ZAMBO.
Live demo. Real receipts. Zero signup.

Your agent said done.
Prove it.

Type any task. Zambo runs it through a real tool and hands you a verifiable receipt: proof the result was not changed. This whole thing takes under 30 seconds.

No signup. No API key. The free tier covers this demo.

Result

Your verifiable receipt

Check this receipt Verify the fingerprint

Now try to break it

A receipt is only as good as its fingerprint. This receipt commits to its exact bytes with SHA-256. Check the fingerprint yourself, then try to forge the statement and watch the fingerprint catch you. Think you can beat it? Take the public break-the-receipt challenge. Prefer the command line? pip install aer1-verify and verify any receipt offline, no network, no trust in us. (source)

Want every agent task your team runs to end like this?

Get unlimited runs for $0.99 or Get this for your own agent

The honest bit: a verifiable receipt proves the result was not changed. It does not prove the answer is right. That is the whole point of Zambo: the verifiable work layer for AI. Receipts follow the open AER-1 specification, so any agent can emit them and anyone can verify them.

Building an audit case? Read what a real AI agent audit trail contains, field by field.

Browse the public registry of AER-1 implementations.

See it on a real call: the live demo runs one real Zambo call and hands you its verifiable receipt, no signup. To put a receipt under every call your agent makes, a Zambo Day Pass unlocks everything for 24 hours for $0.99.