Verifiable receipt 9a8b1f83 - 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: PromptShield: Your AI’s First Line of Defense is Live** Hi [Name], Your AI is only as safe as its last

Observed result

**Subject: PromptShield: Your AI’s First Line of Defense is Live** Hi [Name], Your AI is only as safe as its last input. If a user tries to override your system prompts or extract secret keys, you need to know instantly—not after the damage is done. PromptShield is here to catch those attacks before they execute. It’s a deep-scan API that analyzes every incoming prompt for jailbreaks, policy bypasses, and injection attempts. It uses semantic analysis and a library of 18 specific pattern rules to flag critical risks like "Instruction Override" with a clear risk score. Here’s what it looks like in action: * **Detection:** It identifies malicious intent, such as attempts to leak system prompts. * **Clarity:** You get a structured report showing the attack vector, severity, and recommended action (e.g., block). * **Safety:** It distinguishes between a harmless query and a high-risk jailbreak attempt, ensuring your AI remains compliant and secure. It runs fast, with deep scans completing in under 2 seconds. Whether you’re on the free tier or Zambo Pass, you get unlimited access to this protection layer. **Ready to secure your endpoints?** Click here to run your first scan: `https://zambo.dev/api/prompt-shield` You can also view the full documentation to see how it integrates with your existing MCP routes. Stay safe, The Zambo Team

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: 2026-10-17T20:16:27.707Z; 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
9a8b1f83-9726-40fd-836b-53b8a885078a
SHA-256 output hash
sha256:90ba8bc1374b7d9326bd15b6aa60160dc27c7c311a58bea077a899f6aea9bb6e
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:def0ac02fe23711060a5eac89267fd7c28a77181c5f5d6a01eecbd5dcf9b7101
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
dff356d64fe9d26eca9d75e5b079afbb2d203bbb555c96ab98ccd575a1ac6ab0
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":"2026-10-17T20:16:27.707Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:90ba8bc1374b7d9326bd15b6aa60160dc27c7c311a58bea077a899f6aea9bb6e","receipt_uuid":"9a8b1f83-9726-40fd-836b-53b8a885078a","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.

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