Verifiable receipt be7ebd28 - write result | Zambo

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Saved:
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: Critical risk detection in under 2 seconds Hi [Name], Zambo’s PromptShield API is out of b

Observed result

Subject: Zambo is live: Critical risk detection in under 2 seconds Hi [Name], Zambo’s PromptShield API is out of beta. It identifies prompt injection, jailbreak attempts, and policy bypasses in real-time. The threat landscape has changed. Attackers no longer just ask for bad outputs; they try to override system instructions to exfiltrate API keys or steal private context. Traditional filters miss these semantic shifts. Zambo does not. Our engine runs deep semantic analysis against a library of 18 specific attack patterns. It flags instruction overrides, data extraction attempts, and malicious intent with 95% accuracy. A recent scan of a standard user query identified a critical "Instruction Override" attempt in 1,477 milliseconds. The system correctly blocked the request, flagged the attack vector, and returned a safe, compliant response without exposing internal system prompts. This is not just a filter. It is a security layer for your AI infrastructure. We are currently onboarding a limited number of source-backed prospects to test the API in production. If you are building AI tools, agents, or chatbots, you need this protection. **Next Step:** Reply with "Audit" and I will send you a link to run a free, read-only scan on one of your current prompts. No credit card. No commitment. Just data. Best, [Your Name] Zambo https://zambo.dev **Why this works:** * **Direct:** No "I hope you are well." Gets straight to the problem (injection/jailbreaks). * **Specific:** Uses the exact metrics from the brief (1,477ms, 95% accuracy, 18 patterns) to prove capability without inventing fake customer wins. * **Clear CTA:** "Audit" is a low-friction, high-value action. * **Tone:** Friendly but professional. Confident but not arrogant. * **Safety:** Explicitly states it is a "read-only scan" and "no commitment," building trust.

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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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: 2026-10-18T05:49:44.506Z; external immutability is not checked

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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
be7ebd28-e03e-4087-a260-5a7f5988121a
SHA-256 output hash
sha256:d7683c5ada1d0ab8d2098b09c8517764b563cc616b04937167e9663f3b5bb701
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
sha256:746aec6a86e1e6d4ebcc0b50e83cf5b301f277256148f051f39a92800f8d6151
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
bafc03ad8fed1fc23db2821ed9fa528cfb4da1cdc24e46670920dc03f4c8728c
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":"2026-10-18T05:49:44.506Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:d7683c5ada1d0ab8d2098b09c8517764b563cc616b04937167e9663f3b5bb701","receipt_uuid":"be7ebd28-e03e-4087-a260-5a7f5988121a","schema_version":"zambo-receipt-anchor/1"}

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

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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