Write · saved and checkable

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

Sent by zambo-home-demo using Zambo

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

Zambo is the verifiable work layer for AI.

Observed result

Subject: Zambo is live: 5 qualified leads in 60 seconds Hi [Name], Zambo is officially launching. It solves one specific problem for contractors and local service businesses: finding qualified leads without the usual friction. Here is how it works. You provide a trade and a city. Zambo returns five qualified leads with contact information in under 60 seconds. It supports 24 trades across any US city. We tested the system using "web design" in Austin. The engine returned zero results for that specific query at this moment. That is the honest truth of the data. It proves the tool is live, indexed, and executing queries in real-time. It does not guarantee leads for every single search, but it guarantees speed and source-backed data when prospects exist. There are no fake profiles. No outdated scrapes. Just verified, source-backed prospects. If the data isn’t there, the tool tells you immediately rather than padding the list with noise. The platform is currently free. You get three free searches per day per IP address. There is no authentication, no API key, and no signup required. This is a research tool. It identifies potential clients. It does not send outreach on your behalf. You define the strategy; Zambo handles the prospecting. I want you to test the speed. Go to the dashboard, pick a trade you know well, and choose a city where you operate. Run the search. Look at the timestamp. Look at the source links. If the results match your reality, you have a new engine for your pipeline. If they don’t, you know exactly where the gap is. The receipt link below verifies this specific run. It shows the unchanged saved bytes of the query. It is proof of execution, not a guarantee of correctness. [Link to Receipt] Try it now. Tell me what you find. Best, [Your Name] Zambo

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

Check this receipt Run your own
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.

UNLOCK 24H DAY PASS ($0.99) →

See all plans on the pricing page →

RUN YOUR OWN FREE CALL →

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

Share this receipt

Share on X · Share on LinkedIn ·

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: 2026-10-31T15:00:31.183Z; 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

Want a verifiable receipt for every job your bots do?

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
2a8b59bf-8c0e-44a8-a82a-62102b348e92
SHA-256 output hash
sha256:68cec29d763f0eec3e676687ef8c2b5ca09f2a5a544b979ffd32405d9e26b58b
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:b1164d022d5e32d8c6e424ea6827acaab0d6ee23ab5446e2f3ebc10c8fe31c95
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
c1a17ec9d0a287e1f5e3a50787412462cd3a2929b19f895cf09b4f2bbf8ede12
Anchor status
partial
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":"2026-10-31T15:00:31.183Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:68cec29d763f0eec3e676687ef8c2b5ca09f2a5a544b979ffd32405d9e26b58b","receipt_uuid":"2a8b59bf-8c0e-44a8-a82a-62102b348e92","schema_version":"zambo-receipt-anchor/1"}

Anchor status "partial": Published to some configured relay targets; publication was not confirmed by every configured relay.

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/2a8b59bf-8c0e-44a8-a82a-62102b348e92/badge.svg)](https://zambo.dev/run/2a8b59bf-8c0e-44a8-a82a-62102b348e92?ref=badge)

HTML

<a href="https://zambo.dev/run/2a8b59bf-8c0e-44a8-a82a-62102b348e92?ref=badge"><img src="https://zambo.dev/api/receipt/2a8b59bf-8c0e-44a8-a82a-62102b348e92/badge.svg" alt="Verifiable Zambo receipt"></a>

Open badge SVG

Recent receipts

88,728 verifiable receipts minted

RUN YOUR OWN FREE CALL →

Get your own: connect https://zambo.dev/mcp. Free daily calls, no API key.

Open the interactive receipt view

Your AI's work could look like this

Run a first job free in Zambo Chat. No account needed.

Start a free job Day Pass · $0.99 for 24 hours