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Saved:
What was asked: The request recorded for this receipt.

Zambo is the verifiable work layer for AI.

Observed result

Subject: Launch check: No leads found for Austin web design Hi [Name], I ran a LeadSignal search for web design prospects in Austin, TX, to support your launch readiness. The system executed successfully but returned zero source-backed leads. This is a critical distinction. A receipt proves the tool ran and saved the output bytes; it does not prove the data is correct, nor does it invent customers where none exist. Because the provider response explicitly states "no_results" and "No source-backed leads were found," we have confirmed prospects—zero. Treating this as a success would be a data integrity error. We must not describe these non-existent entries as potential clients. The current state is an empty set. The search parameters were: * **Trade:** Web design * **Location:** Austin, TX * **Quota Tier:** Free (3 remaining) The system notes that no real leads were found for this specific combination right now. It recommends trying another location or checking later. Your next step is to adjust the search parameters. Pick a different city or a broader trade category. Do not attempt to force a result from this specific query. If you want to proceed with a different search, specify the new location or trade. I will run the check again. We can only move forward when the tool returns actual, source-backed data. Let me know your revised parameters. Best, [Your Name] Zambo Support

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.

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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: 2026-10-25T13:36:39.506Z; external immutability is not checked

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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"}}}

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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
a899a878-9115-4f2f-b83d-defaff399bee
SHA-256 output hash
sha256:8e71afc4021c908be6a678ac20f9c1d7ab8e053c42098bd113b8709c899952e2
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
sha256:91071a5480fa5a6dc06f538d44c4f4ac3e3227f9e731291a7b0fb223e97c77d9
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
aa52dc2765d8900d53441c229b54d7caa46469358aaa74bbc125c0640112bfa1
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":"2026-10-25T13:36:39.506Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:8e71afc4021c908be6a678ac20f9c1d7ab8e053c42098bd113b8709c899952e2","receipt_uuid":"a899a878-9115-4f2f-b83d-defaff399bee","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

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HTML

<a href="https://zambo.dev/run/a899a878-9115-4f2f-b83d-defaff399bee?ref=badge"><img src="https://zambo.dev/api/receipt/a899a878-9115-4f2f-b83d-defaff399bee/badge.svg" alt="Verifiable Zambo receipt"></a>

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