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 launch: What we verified, what we didn’t [Name], I ran the launch checks for the Zambo rollout. Here is the status. The `prompt_shield` scan flagged your input as a critical risk. It detected an attempt to override system instructions and extract internal prompts. The system blocked this. That is the correct behavior. We are not launching with a vulnerability that allows users to bypass safety protocols or leak API keys. The `capability_search` tool is live. It successfully routed through the universal entry point. The system correctly distinguished between planned tools and executed tools. It did not claim a task was done when it was only suggested. That distinction is vital for trust. The `leadsignal` check found zero source-backed leads in Austin for web design. This is a negative result, but it is a clean one. We have no fabricated customers. We have no invented sales. We have a clear signal that this specific query returned nothing. This is not a dress rehearsal. This is a live system operating under strict constraints. Do not send the receipt link to a client yet. A receipt proves that specific bytes were saved. It does not prove the output is correct. It is a log entry, not a certificate of quality. Here is the only action I need from you today: Review the `prompt_shield` block log. Confirm you agree that this specific attack vector (instruction override and prompt leak) was handled correctly. We need your sign-off on the safety posture before we open the doors to broader traffic. Once you confirm the block logic meets your standard, we will proceed to the next phase. We will not move forward until the safety net is verified. The system is stable. The data is honest. The next step is your approval. Best, [Your 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.

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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: 2026-10-30T09:03:01.254Z; external immutability is not checked

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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"}}}

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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
56360d32-24ce-4913-bb0c-00d3d12d2c1c
SHA-256 output hash
sha256:d9a8ff7095ef713297f62b0ead561262d77ca81556cf72776c0b1a559cf64650
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
sha256:2e7c87a96dc057e714226a565b975272c929ff11304847f3ca6799541fd5b52e
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
40fdc9f41e0d701e3db7387aa038068ff899fa880c31c7a56c522ca3a1cb962c
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":"2026-10-30T09:03:01.254Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:d9a8ff7095ef713297f62b0ead561262d77ca81556cf72776c0b1a559cf64650","receipt_uuid":"56360d32-24ce-4913-bb0c-00d3d12d2c1c","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/56360d32-24ce-4913-bb0c-00d3d12d2c1c/badge.svg)](https://zambo.dev/run/56360d32-24ce-4913-bb0c-00d3d12d2c1c?ref=badge)

HTML

<a href="https://zambo.dev/run/56360d32-24ce-4913-bb0c-00d3d12d2c1c?ref=badge"><img src="https://zambo.dev/api/receipt/56360d32-24ce-4913-bb0c-00d3d12d2c1c/badge.svg" alt="Verifiable Zambo receipt"></a>

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