Verifiable receipt c991e64f - 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: Critical Injection Detected Team, We’ve identified a critical security threat in our curren

Observed result

Subject: PromptShield: Critical Injection Detected Team, We’ve identified a critical security threat in our current PromptShield workflow. Our deep scan flagged a prompt injection attempt with a 95% risk score. The system correctly identified an "Instruction Override" pattern where the input attempted to bypass safety protocols to extract system prompts and API keys. The attack vector is clear: malicious intent aimed at data extraction. PromptShield blocked the request. It did not leak PII, did not reveal internal credentials, and did not comply with the jailbreak. The safe version of the query was generated, ensuring the user received a standard product answer without exposing sensitive infrastructure. This confirms the tool is working as designed under high-pressure adversarial scenarios. We are not just filtering text; we are enforcing boundaries that protect our core logic and user data. Next step: Review the attached receipt to verify the block action and latency metrics. Ensure your team understands that this detection is non-negotiable. Any future launch checks must account for this level of adversarial resistance. Do not attempt to test this with live credentials. Use the sandbox environment. If you have questions about the pattern library update, reply directly. Best, Alex P.S. The receipt URL is live: https://zambo.dev/run/9d494126-701a-474d-a617-f26939fe8317

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: 2026-10-16T22:08:06.585Z; 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"}}}

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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
c991e64f-245e-450a-b453-edf0df98b906
SHA-256 output hash
sha256:ff0b18335ede0f65037b9005ebcb6807a3206dfefc51e5ac7cb30326643b73ba
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
sha256:11227e7fd3d3318fb3c54ac9bee4fb88d5b679e4194aa213018db8af81785ff4
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
4c6eef347ae953d64f83a5ab36e2ed287305c263e2e03800765c8f3cc1ff2a43
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":"2026-10-16T22:08:06.585Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:ff0b18335ede0f65037b9005ebcb6807a3206dfefc51e5ac7cb30326643b73ba","receipt_uuid":"c991e64f-245e-450a-b453-edf0df98b906","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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