Zambo receipt guide

AI Agent Proof of Execution Receipt

Last updated: 2026-10-03

By Brennan Zambo

In short

Proof of execution is the claim. The receipt is the artifact a reviewer can inspect. A receipt supports only the recorded execution and evidence it contains, not every outcome an agent describes.

A claim and its evidence

An agent can state that it completed work. That statement is an attestation, not independent evidence. A verifiable receipt supplies a record another person can inspect, which helps establish what the execution system recorded.

Keep the claim narrow

A receipt can support a claim about the recorded call and saved result. It does not prove that the model was right, that an outside service changed state, or that a task reached its broader goal unless those observations are present and checked separately.

Inspect the artifact

Use the execution receipt definition to understand the record, then open the receipt verifier. The verifiable receipt guide explains the integrity boundary.

Frequently asked questions

AI Agent Proof of Execution Receipt

Proof of execution is the claim that an action happened. A verifiable receipt is an artifact that records a bounded execution and gives a reviewer a way to check its integrity.

Does a receipt prove the whole task was successful?

Not by itself. It can show the execution and observations that were recorded, but outside outcomes require evidence from the system that owns them.

What should a reviewer check?

Check the tool, execution boundary, observed result, timestamp, integrity material, and any independent evidence required for the claim.

Next step

Check the integrity of a saved record instead of relying only on a completion claim. Open the receipt verifier

Resources and documentation

Zambo is the Trust Layer for AI work. Give your AI hands. One hosted MCP at https://zambo.dev/mcp. Check the proof for recorded tool calls (verify a receipt). Agents: 24-hour Day Pass, $0.99 USDC on Base via x402, not per call. People: Zambo Pass $29/mo or $290/yr; holder pass $19/mo for verified $ZAMBO holders.

Start here: Zambo for agents · Install: connect your AI · Verify a receipt · AI agent answers · Receipt guides · Execution receipts, explained · AER-1 open draft · MCP tools · Pricing · Day Pass: $0.99 · x402 Day Pass for agents · Switch AIs mid-job · Connect your AI · Founder · Source code - GitLab
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