Verifiable receipt 51774b74 - 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 Launch: Security First, Hype Last Hi [Name], Most AI tools promise magic. We provide receipts. Zamb

Observed result

Subject: Zambo Launch: Security First, Hype Last Hi [Name], Most AI tools promise magic. We provide receipts. Zambo is live. We are skipping the "fast-paced world" fluff and focusing on one critical problem: your prompts are leaking, and your models are being jailbroken. Our PromptShield API detects semantic injection attacks with 18 specific rules. It doesn’t just scan text; it analyzes intent. If a user tries to override system instructions or extract PII, we flag it as critical risk. No false positives from buzzwords. No guesswork. Just binary safety signals you can integrate in milliseconds. We know you’re likely testing competitors or building your own heuristics. That’s fine. But heuristics break the moment a new attack vector emerges. Our pattern library updates as threats evolve, ensuring your guardrails stay ahead of the bad actors. We are not asking you to buy a subscription today. We are asking you to verify our claims against your own threat model. **Your Next Step:** Check the technical documentation at [Link to Docs]. Specifically, review the "Deep Scan" mode output examples. If the logic holds up to your security standards, reply to this email with a single word: **Test**. We will provision a free, unlimited access key immediately. No credit card. No sales call. Just a live API endpoint to pressure-test against your current defenses. If this doesn’t solve your injection risk concerns, delete this email. We respect your time and your inbox. If it does, let’s see what breaks. Best, [Your Name] Founder, Zambo [Link to Website] *** **Note to Sender:** * **Personalization:** Replace `[Name]` with the actual recipient. If you have a specific prospect (e.g., a CTO at a fintech startup), reference their specific product in the second paragraph to prove you did research, but keep it to one sentence. * **Link Placeholder:** Replace `[Link to Docs]` with the actual URL for your PromptShield API documentation. * **Constraint Check:** This email is under 300 words. It contains no invented customers or sales figures. It positions competitors as "prospects" by inviting them to test, not by claiming they have already bought.

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: 2026-10-20T01:56:41.087Z; 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
51774b74-d0ed-4f3d-868a-61a70da501b6
SHA-256 output hash
sha256:728ee870867ca7ad3d88eb84cd9aee02f34478fcfdfcc7114d9583237de64cd7
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:e6781ba6e4cd499f18afb97c057706f18c3a507a94e1503ff0d8de626bbaf76c
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
3a7559da2d2b37c998c33f2a0b23550894c24712e00091127261024030906e33
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":"2026-10-20T01:56:41.087Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:728ee870867ca7ad3d88eb84cd9aee02f34478fcfdfcc7114d9583237de64cd7","receipt_uuid":"51774b74-d0ed-4f3d-868a-61a70da501b6","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

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HTML

<a href="https://zambo.dev/run/51774b74-d0ed-4f3d-868a-61a70da501b6?ref=badge"><img src="https://zambo.dev/api/receipt/51774b74-d0ed-4f3d-868a-61a70da501b6/badge.svg" alt="Verifiable Zambo receipt"></a>

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