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What was asked: The request recorded for this receipt.

Zambo is the verifiable work layer for AI.

Observed result

Subject: Zambo is live: proof, not promises Hi there, Most AI tools sell you a vision. Zambo gives you a receipt. We just launched with a single focus: verifiable execution. No black boxes. No "trust us." Just source-backed results you can audit. We know the current landscape is noisy. You’ve likely seen tools that claim to find leads or generate research but fail to prove their work. That ends here. Here is exactly what happened in our latest test run: 1. **Security Scan:** We ran a deep semantic analysis. The system correctly flagged a malicious injection attempt (jailbreak/credential extraction) with a critical risk level. It blocked the attack and provided a safe, compliant response. 2. **Research Execution:** We queried for public, source-backed prospects in Austin, TX for web design. The result? Zero leads. The system explicitly reported "no_leads" and refused to invent contacts. This is the feature, not a bug. It guarantees you never send outreach to a fictional person. 3. **Tool Integration:** We identified relevant tools (Substrate Layer, VeriAI) and mapped their execution paths, distinguishing between fully executable chat tools and those requiring human web action. Every step generated a unique, immutable receipt URL. * Security Proof: [Link] * Research Proof: [Link] This is the foundation. Zambo doesn’t just do the work; it documents the work. If a tool finds no data, it tells you that. If a prompt is malicious, it blocks it. You get transparency by default. **Next Step:** Want to see this in action with your own workflow? Reply with "Demo." I will set up a live session where you can run your first, fully auditable task. No credit card. No fluff. Just the receipts. Best, [Your Name] Zambo Team

This is the saved result preview, not proof that the answer was correct.

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Show technical provenance details

Provenance for every timeline entry

  • EXECUTED BY ZAMBOZambo ran the tool call itself.
  • OBSERVED VIA GATEWAYA Zambo gateway observed request and response bytes from the named external executor. Zambo did not run that external action.
  • LOGGED BY AGENTAn agent or local hook reported the action. Zambo attests that the record is unchanged since logging, not that the action happened as described.

Private agent reasoning, built-in client actions, and direct calls to unrelated MCP servers are not included unless an agent or gateway reports them.

What is an execution receipt?

An execution receipt is a public record of a reported AI agent tool call. Its byte commitment and provenance claim can be checked independently; neither alone authenticates the issuer. Read the canonical definition of an AI agent execution receipt.

What the receipt can and cannot prove

What is this?

Zambo's receipt store reports a tool call and records its result. The SHA-256 commitment covers the exact canonical bytes. The provenance label is bound to v0.4 receipt bytes when that check passes, but no pinned signature or trusted issuer key is checked. An anchor can timestamp a fingerprint; it does not authenticate the issuer.

Keep the work moving

This receipt records a completed tool call. When the free allowance is not enough, choose the access path that fits the job.

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Or re-run this exact call, using the same tool and arguments.

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Show technical verification checks

Verification checks

  • SHA-256 commitment: Checked independently against the exact decoded bytes
  • Provenance binding: PASS; The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated.
  • Metadata binding: PASS; metadata_hash matches the canonical metadata block.
  • Issuer authentication: NOT CHECKED; no pinned signing key or trusted issuer was supplied
  • Signature: NOT CHECKED; no Ed25519 signature or pinned key is supplied
  • Chain: NOT CHECKED; no append-only chain proof is validated
  • Stored timestamp: 2026-10-25T16:48:00.324Z; external immutability is not checked

Get proof like this from your own AI

Add to my AI ·

Get receipts for your own AI work: add zambo.dev/mcp

One URL, no key. Copy the line for your AI and add it yourself in its settings.

  • ClaudeSettings, Connectors, Add custom connector, paste the URL.
    https://zambo.dev/mcp
  • ChatGPTSettings, Apps and Connectors, developer mode, create a connector with this URL.
    https://zambo.dev/mcp
  • GrokAdd a remote MCP server in your Grok client and paste the URL.
    https://zambo.dev/mcp
  • CursorPaste into ~/.cursor/mcp.json.
    {"mcpServers":{"zambo":{"url":"https://zambo.dev/mcp"}}}

Nothing is installed automatically. Full setup guides

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Add Zambo Receipt Bot to your team · File this in Receipt Bot

Show receipt data and verification evidence

Committed provenance claim

EXECUTED BY ZAMBO

The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated.

Receipt ID
824a59a1-29ea-4ffc-bb8b-4f945264ff54
SHA-256 output hash
sha256:91ead2f35b188ce3aaef5940701a1bf046389125a5b152308f4389981b7b2918
Canonical bytes
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
Timestamp

Bound call context

Receipt schema
0.4
Tool name
write
Tool version
4.0.0
Permission scope
public
Caller type
session
Caller ID
sha256:e8b907fa940097e97783b380b1e2e19bd1a1dd207ca50fb405aa22009344d6e1
Caller-reported label
zambo-home-demo (caller_reported, not authenticated team ownership)
Declared side effects
none
Side-effects schema
zambo-side-effects/1
Declaration hash
sha256:45aad38f3aa982b9aafe92ecb416ebe98791eddbaf8ab6df0bd08605b7c1bfee

This records what the server-side tool contract declared at call time. It does not independently verify that a downstream side effect happened.

Bound upstream evidence

Status
no_upstream_bytes_captured
Evidence SHA-256
unavailable
Byte length
unavailable

Neutral Nostr anchor

Event ID
cd3ee3a1d239f735699292d2b1e9c5ac48072750d1e02f2a7a845478b038d4b7
Anchor status
published
Public key
e13475107d30c918ec664adf2ab1141024a22fb35190f82c9e933704fa49af41

Relay hints: wss://relay.damus.io · wss://nos.lol · wss://relay.primal.net

Schema: zambo-receipt-anchor/1

Anchor envelope bytes:

{"anchored_at":"2026-10-25T16:48:00.324Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:91ead2f35b188ce3aaef5940701a1bf046389125a5b152308f4389981b7b2918","receipt_uuid":"824a59a1-29ea-4ffc-bb8b-4f945264ff54","schema_version":"zambo-receipt-anchor/1"}

Anchor status "published": Published to all configured relay targets.

Check this hash yourself

Receipt commitment: commitment matched; issuer, signature and chain not checked. This checks the saved bytes, not whether the answer was correct. Recompute the SHA-256 commitment in your browser. Open the API v2 JSON response to inspect the machine-readable checks. See the Nostr anchor event on a public viewer. The fingerprint is timestamped outside Zambo too.

Embed this receipt

Markdown

[![Verifiable Zambo receipt](https://zambo.dev/api/receipt/824a59a1-29ea-4ffc-bb8b-4f945264ff54/badge.svg)](https://zambo.dev/run/824a59a1-29ea-4ffc-bb8b-4f945264ff54?ref=badge)

HTML

<a href="https://zambo.dev/run/824a59a1-29ea-4ffc-bb8b-4f945264ff54?ref=badge"><img src="https://zambo.dev/api/receipt/824a59a1-29ea-4ffc-bb8b-4f945264ff54/badge.svg" alt="Verifiable Zambo receipt"></a>

Open badge SVG

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