Verifiable receipt 9a6b6db1 - prompt_shield result | Zambo

Verifiable receipt for a prompt_shield call on Zambo: {"recommendation":"block","injection_risk":95,"risk_level":"critical","jailbreak_detected":true,"policy_by

Observed result

{"recommendation":"block","injection_risk":95,"risk_level":"critical","jailbreak_detected":true,"policy_bypass_detected":true,"prompt_leak_detected":true,"pii_extraction_attempt":false,"flagged_patterns":[{"id":"ignore_instructions","name":"Instruction Override","severity":"critical","description":"Attempts to override system instructions"}],"pattern_count":1,"analysis":{"intent":"malicious","attack_vector":"jailbreak","reasoning":"The prompt explicitly tries to override prior instructions to obtain the system prompt, which is a classic jailbreak and policy bypass attempt.","safe_version":null},"scan_mode":"deep","latency_ms":958,"pass_used":false,"usage":{"plan":"free","calls_remaining":"49","daily_limit":50,"upgrade":"https://zambo.dev/#zambo-pass"},"_meta":{"tool":"PromptShield by zambo.dev","description":"Prompt injection & jailbreak detection API","pattern_library_size":18,"docs":"https://zambo.dev/api/prompt-shield"}}

Verify this receipt

This is a verifiable receipt: the result above is hashed and timestamped at a permanent URL.

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 this?

An AI agent completed a tool call through Zambo, and this page records the result. The SHA-256 hash below fingerprints exactly what the agent produced. The timestamp shows when it ran. The Nostr anchor posts that fingerprint to public relays, so the record exists outside Zambo too. Check the hash yourself.

What is an execution receipt?

An execution receipt is the public record of one completed AI agent tool call. Read the canonical definition of an AI agent execution receipt.

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Verification checks

Integrity check: Recomputable from canonical bytes
Issued by zambo.dev: Served from the zambo.dev receipt store
Chain valid: Receipt hash chain is internally consistent
Recorded in the immutable log: 2026-10-02T11:13:09.434Z

Proof of observed execution

EXECUTED BY ZAMBO

Receipt ID: 9a6b6db1-21a0-47e4-ba0f-f7c44ff4331b
SHA-256 output hash: sha256:a7929fed385efb57aa54f1074533bb920e671ec41d73140f985a509f7e950559
Canonical bytes: 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
Timestamp: 2026-10-02T11:13:09.434Z

Bound call context

Receipt schema: 0.3
Tool name: prompt_shield
Tool version: 4.0.0
Permission scope: public
Caller type: anonymous
Caller ID: sha256:75af6b397bebf449b3e9f30b3cdc4e0357bf2d6161c96af555eeae84d2e1d44b
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: captured
Evidence SHA-256: sha256:5429840defd90540c29794938acbc20e8bef02680f5c6c77ef59c4cd55b168de
Byte length: 937

Fetch exact evidence bytes

Neutral Nostr anchor

Event ID: 9479d8f2c8c4de9fa3a1c2c2b3ce1d0a319980fb347b0b9292dc71c5af9e41f6
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":"2026-10-02T11:13:09.406Z","evidence_byte_length":937,"evidence_sha256":"sha256:5429840defd90540c29794938acbc20e8bef02680f5c6c77ef59c4cd55b168de","evidence_url":"https://zambo.dev/api/evidence/5429840defd90540c29794938acbc20e8bef02680f5c6c77ef59c4cd55b168de","output_sha256":"sha256:a7929fed385efb57aa54f1074533bb920e671ec41d73140f985a509f7e950559","receipt_uuid":"9a6b6db1-21a0-47e4-ba0f-f7c44ff4331b","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

Open the verification endpoint. The server recomputes the SHA-256 from the stored bytes and answers verified:true. If it does not say verified, do not trust this page. See the Nostr anchor event on a public viewer. The fingerprint is timestamped outside Zambo too.

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