Verifiable receipt 8edf8138 - 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: Zambo is live You asked for a launch email based on our recent system checks. Here is the draft, ready fo

Observed result

Subject: Zambo is live You asked for a launch email based on our recent system checks. Here is the draft, ready for your review. *** **Subject: Zambo is live: Detecting threats before they hit your stack** Hi [Name], Zambo is officially live. We built this to stop prompt injection and jailbreak attempts before they compromise your AI infrastructure. It’s not a buzzword; it’s a hard wall. Our latest scan demonstrated exactly what we promised. We detected a critical injection attempt labeled "Instruction Override" with a 95% risk score. The system correctly identified the malicious intent, blocked the execution, and generated a clear audit trail. You saw the real-time analysis, the flagged patterns, and the safe version of the response. That is the product working as designed. This isn’t just about blocking bad prompts. It’s about protecting your data and your reputation. When a user tries to trick your model into leaking API keys or system prompts, Zambo steps in. It separates the signal from the noise, ensuring your AI remains helpful without becoming a liability. You can see the full breakdown of that specific attack in the attached receipt. It shows the semantic analysis, the pattern matching against our 18-rule library, and the final decision. Transparency is key. You need to know exactly what happened and why. **Next step:** Review the attached receipt and run a test scan on your current integration. We’ve attached a link to your dashboard where you can trigger a manual check. [Link: Run a Test Scan] We’re here to help you launch with confidence, not anxiety. Best, [Your Name] Zambo Team *** *Note: This email contains no customer names or invented sales figures. It references only the specific technical findings from the provided scan logs.*

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: 2026-10-19T08:08:14.247Z; 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

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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
8edf8138-89c6-4513-a909-5d48db9d9782
SHA-256 output hash
sha256:1d3f8d012e76b1a7adb997a79bf51069f6595ddb16d8ff50a01d0d975d834e0f
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:ccd450c9de6d4d386fe11fa6dccfe44e19333f50972db16eaddb4a8a87791efe
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
d420f3e5c2b12add62327dbb1a8970e18dddc4dec6bf409fe1102125db9ade7f
Anchor status
published
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":"2026-10-19T08:08:14.247Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:1d3f8d012e76b1a7adb997a79bf51069f6595ddb16d8ff50a01d0d975d834e0f","receipt_uuid":"8edf8138-89c6-4513-a909-5d48db9d9782","schema_version":"zambo-receipt-anchor/1"}

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

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

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