Public work receipt · checkable record

Write · saved and checkable

✓ This result hasn’t changed since it was saved.

Sent by zambo-home-demo using Zambo

Saved:
What ran: write

Zambo is the verifiable work layer for AI.

Observed result

Subject: Zambo is live: 60-second lead research I saw your recent activity checking the Zambo platform. You’re ready to test the core value prop: turning vague hunting into precise, source-backed prospecting. Zambo’s LeadSignal tool is now fully operational. It targets contractors and local service businesses across 24 trades in any US city. The goal is simple. You input a trade and a location. The system returns five qualified leads with contact info in under 60 seconds. This is not a demo. It is a functional research engine. It identifies potential clients, not current customers. The data is source-backed, meaning every lead has a verifiable origin. If the tool returns zero results for a specific query, that is accurate data, not a failure. It reflects current market availability. Your next step is precise. Pick one trade you know well. Choose one city where you have existing knowledge or a specific target market. Run the search. Do not guess. Do not use broad terms like "marketing." Use specific trades like "roofer," "plumber," or "HVAC." Specificity drives accuracy. If you get results, evaluate the quality. If you get none, try a different city or trade. This process takes less than two minutes. It removes the friction of manual scraping. The receipt links provided confirm system status, not commercial success. They prove the bytes were saved and the query executed. They do not guarantee a sale. Your job is to validate the lead quality. Start now. Select your trade. Select your city. Run the check. If the results are weak, adjust your parameters. If they are strong, you have your first batch of prospects. This is the foundation of your outreach strategy. Keep it tight. Keep it factual. Let the data speak. Best, The 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.

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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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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: 2026-11-14T07:02:28.439Z; external immutability is not checked

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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"}}}

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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
188a7740-0a4c-436d-9f2a-6de4595d3f7c
SHA-256 output hash
sha256:198da75fe6e53e4e68ff717969e3ac9ef49a08a35dc6504634fd5534f04dbe02
Canonical bytes
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
Timestamp

Bound call context

Receipt schema
0.4
Tool name
write
Tool version
4.1.4
Permission scope
public
Caller type
session
Caller ID
sha256:da56f6254cce4553e82fe6c702423dc3669ead68bd9c50d8b202023512044f98
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
empty
Evidence SHA-256
unavailable
Byte length
unavailable

Upstream provenance

This receipt is independently auditable against the named upstream source. This is not a mathematical correctness claim.

  • Source: · queried at: · raw response hash:

Neutral Nostr anchor

Event ID
21a95a242f55e51882a8d4a671341adcadd3cdfdb89e0de3df6afe20cda4dbd7
Anchor status
published
Public key
e13475107d30c918ec664adf2ab1141024a22fb35190f82c9e933704fa49af41

Relay hints: wss://relay.primal.net

Schema: zambo-receipt-anchor/1

Anchor envelope bytes:

{"anchored_at":"2026-11-14T07:02:28.439Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:198da75fe6e53e4e68ff717969e3ac9ef49a08a35dc6504634fd5534f04dbe02","receipt_uuid":"188a7740-0a4c-436d-9f2a-6de4595d3f7c","schema_version":"zambo-receipt-anchor/1"}

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

Relay publication is separate from receipt integrity. When the original signed event is available, Zambo retries pending, partial, or failed anchors about once a minute. Relay acknowledgements are external, so there is no guaranteed completion time; the receipt remains checkable from its saved bytes and verification link.

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/188a7740-0a4c-436d-9f2a-6de4595d3f7c?ref=badge"><img src="https://zambo.dev/api/receipt/188a7740-0a4c-436d-9f2a-6de4595d3f7c/badge.svg" alt="Verifiable Zambo receipt"></a>

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