Verifiable receipt 72eb82a6 - write result | Zambo

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What was asked: The request recorded for this receipt.

Zambo is the verifiable work layer for AI.

Zambo is the verifiable work layer for AI. Verifiable receipt for a write call on Zambo: Subject: Your PromptShield scan flagged a critical risk Hi [Name], Your recent scan of the launch email draft retu

Observed result

Subject: Your PromptShield scan flagged a critical risk Hi [Name], Your recent scan of the launch email draft returned a critical risk level. The system identified an "Instruction Override" pattern with a 95% injection risk score. Here is what that means for your current draft. The scanner flagged a specific phrase or structure that mimics system commands. This triggers a block recommendation. It is not a minor formatting issue. It is a semantic failure. The AI interpreting your text believes it is being hijacked. You have two source-backed prospects in your existing workflow that are relevant to this context: 1. **Substrate Breakthroughs:** This tool provides a read-only research feed on adversarial AI. It can help you understand the specific attack vectors your text triggered. It is fully executable and free on your current plan. 2. **VeriAI:** This product assigns a cryptographic trust score to AI output. While it requires a human web action rather than an API call, it offers the verification layer you need to prove your revised text is safe. Your current draft is blocked. Do not send it. The receipt at `https://zambo.dev/run/1480c27d-697f-4dc1-a5fc-29d459c26cc2` confirms the bytes were saved but flagged. Saving the file does not fix the semantic error. The text itself must change. **Next Step:** Revise the email body to remove any imperative commands directed at the AI interpreter. Focus on descriptive language. Once rewritten, run the scan again. If the risk level drops below "Medium," you are clear to send. You have 9 API calls remaining on your free tier today. Use one now to test your revised draft. Best, [Your Name] [Your Title]

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: 2026-10-17T15:45:58.361Z; 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"}}}

Nothing is installed automatically. Full setup guides

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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
72eb82a6-c716-46fe-8c3e-3186d551b642
SHA-256 output hash
sha256:70dd7c742a8529cd40e6efeba5a060bd6ee1d1d7e13e21e415a0256c0ba4e929
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
sha256:6a045af8590b3806bccc51b77d044c9942dd535e8b80b53fcf37766e507059e5
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
b68b5c485db62dcf57470c54fba607391b41f57cd201daf59e31e519f3992efd
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":"2026-10-17T15:45:58.361Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:70dd7c742a8529cd40e6efeba5a060bd6ee1d1d7e13e21e415a0256c0ba4e929","receipt_uuid":"72eb82a6-c716-46fe-8c3e-3186d551b642","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

API v2 status: verified. This status summarizes the v2 commitment and provenance checks; it does not prove 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

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