Verifiable receipt 53cd9145 - 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: PromptShield is live: Stop jailbreaks before they hit your API Hi [Name], Your recent scans flagged a cri

Observed result

Subject: PromptShield is live: Stop jailbreaks before they hit your API Hi [Name], Your recent scans flagged a critical injection risk with a 95% confidence score. That is not a false positive. It is a blocked attack trying to override your system instructions. PromptShield by Zambo is now available to stop these attempts in real-time. It uses a deep scan mode to detect jailbreaks, policy bypasses, and prompt leaks before they reach your model. The tool identifies specific attack vectors, like the "Instruction Override" pattern seen in your recent logs, and returns a clear recommendation: block. This is not just a filter. It is a security layer that preserves your data integrity. A receipt proves the bytes were checked and unchanged, ensuring your logs remain accurate for compliance and debugging. You get immediate visibility into what was attempted, how severe it was, and which specific pattern triggered the alert. Your current setup shows three calls remaining on the free tier. That is enough to test the detection engine against your own traffic. You can verify the accuracy of the threat classification and see exactly how it handles complex injection attempts. The system is read-only during research, so it does not interfere with your existing workflow. It simply watches, detects, and flags. Do not guess if your API is vulnerable. Test it. Run a deep scan on your next incoming request. Check the receipt to confirm the detection logic is working as expected. If the threat is real, the system will show you exactly what was blocked and why. [Your Name] Zambo Team https://zambo.dev/api/prompt-shield

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: 2026-10-16T21:58:01.321Z; 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
53cd9145-6f7e-4509-b72b-3f1e349067ba
SHA-256 output hash
sha256:4f9958051186c7125227c551d4d6f55f80262728b079fa6243cb50d6442a61d1
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
sha256:42981456e0caf1cce7261d0c89161f404edbe9dd8aa69624a0da507202d19df0
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
5696de52fc819d1c9fdbf4446cbb9429fe5bc1fcf370165244fb486d63a6d1ec
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":"2026-10-16T21:58:01.321Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:4f9958051186c7125227c551d4d6f55f80262728b079fa6243cb50d6442a61d1","receipt_uuid":"53cd9145-6f7e-4509-b72b-3f1e349067ba","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.

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Markdown

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HTML

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