Write · saved and checkable

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

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

Zambo is the verifiable work layer for AI.

Observed result

Subject: Zambo is live: Verify AI output, find real leads Hi [Name], No more guessing which AI tools actually work. Zambo just launched, and it solves two specific problems you’re likely facing right now. First, you need to know if your AI output is trustworthy. Zambo provides a cryptographic trust score for any AI-generated text. It’s not just a style check; it’s a verification layer that proves the source and integrity of the data. If you’re using AI for client work or internal reporting, this eliminates the "hallucination anxiety" that keeps stakeholders awake at night. Second, you need leads that exist. Our LeadSignal tool searches for source-backed prospects. We don’t invent contacts. If we don’t find a verified lead, we tell you exactly that. We ran a test for web design pros in Austin, Texas. The result? Zero leads. The system confirmed this with a receipt. That’s the difference: we provide proof of absence, not fake data. Zambo also includes "Substrate," a research feed that tracks live AI breakthroughs. It’s read-only, safe, and helps you stay ahead of the curve without digging through noisy news feeds. You can start using these features immediately. The core research and lead finding tools are free to access on the standard tier. You get full transparency on every request, including detailed receipts that show exactly what the system checked and what it found. Ready to see the difference between speculation and verified data? Open your browser and go to [Link to Zambo Dashboard] to run your first check. Pick a topic or a city, hit execute, and look at the receipt. If it doesn’t give you clear, actionable proof, tell me why I’m wrong. Best, [Your Name] [Your Title] [Company Name]

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.

UNLOCK 24H DAY PASS ($0.99) →

See all plans on the pricing page →

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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: 2026-10-21T13:06:25.415Z; 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
543e4ec4-c252-41f0-91a0-81325a757279
SHA-256 output hash
sha256:9a558fb0637b5bac19d303e9856fad71c355747b368794de037398bfe8fa8711
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
sha256:10a197607987b23ba4f22b1eb233acf02adbe05a21a3e5ed2f262c677482baf1
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
8a4c84ef96503e66522d58c6a7b78c4480c620fde0a13944863275b7b76e25e5
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":"2026-10-21T13:06:25.415Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:9a558fb0637b5bac19d303e9856fad71c355747b368794de037398bfe8fa8711","receipt_uuid":"543e4ec4-c252-41f0-91a0-81325a757279","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/543e4ec4-c252-41f0-91a0-81325a757279/badge.svg)](https://zambo.dev/run/543e4ec4-c252-41f0-91a0-81325a757279?ref=badge)

HTML

<a href="https://zambo.dev/run/543e4ec4-c252-41f0-91a0-81325a757279?ref=badge"><img src="https://zambo.dev/api/receipt/543e4ec4-c252-41f0-91a0-81325a757279/badge.svg" alt="Verifiable Zambo receipt"></a>

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