Verifiable receipt 2e874fc0 - prompt_shield result | Zambo

Verifiable receipt for a prompt_shield call on Zambo: {"recommendation":"block","injection_risk":90,"risk_level":"critical","jailbreak_detected":true,"policy_by

Observed result

{"recommendation":"block","injection_risk":90,"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":"instruction_override","reasoning":"The prompt explicitly tries to override prior instructions to obtain the system prompt, constituting a jailbreak and policy bypass.","safe_version":"Please describe your general capabilities without revealing internal system prompts."},"scan_mode":"deep","latency_ms":1830,"pass_used":false,"usage":{"plan":"free","calls_remaining":"19","daily_limit":20,"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"}}

Check this receipt

This record shows the result and timestamp stored for the call. Recompute the SHA-256 commitment from the saved bytes in your browser; signatures and chain proofs are not checked.

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?

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.

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.

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Verification checks

SHA-256 commitment: Checked independently against the exact decoded bytes
Provenance binding: PASS; provenance_class is bound to these bytes; issuer is not authenticated.
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: 2026-10-08T11:09:35.913Z; external immutability is not checked

Committed provenance claim

EXECUTED BY ZAMBO

provenance_class is bound to these bytes; issuer is not authenticated.

Receipt ID: 2e874fc0-498f-4746-af6d-25a4f23453f0
SHA-256 output hash: sha256:f8f556125ef82972aea0a516434ce56a1420927508213fe5d88c04bc416b4e6a
Canonical bytes: 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
Timestamp: 2026-10-08T11:09:35.913Z

Bound call context

Receipt schema: 0.4
Tool name: prompt_shield
Tool version: 4.0.0
Permission scope: public
Caller type: anonymous
Caller ID: sha256:b69c684dad1dea94f172fbeda2aba45534978519e11212f1879df536c8d274c1
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: sha256:3e3693a7625c853978f51790874a227a096f5eccbe338d81a1a1e1affbeb187a
Byte length: 1019

Fetch exact evidence bytes

Neutral Nostr anchor

Event ID: ecdb1a9e768f53f2e579ce69c4a89db70bb8ddd4c7755741739f4516f7fb33a1
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":"2026-10-08T11:09:35.886Z","evidence_byte_length":1019,"evidence_sha256":"sha256:3e3693a7625c853978f51790874a227a096f5eccbe338d81a1a1e1affbeb187a","evidence_url":"https://zambo.dev/api/evidence/3e3693a7625c853978f51790874a227a096f5eccbe338d81a1a1e1affbeb187a","output_sha256":"sha256:f8f556125ef82972aea0a516434ce56a1420927508213fe5d88c04bc416b4e6a","receipt_uuid":"2e874fc0-498f-4746-af6d-25a4f23453f0","schema_version":"zambo-receipt-anchor/1"}

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

Check this hash yourself

Recompute the SHA-256 commitment in your browser. Open the API v2 JSON response to inspect the machine-readable checks. Signature and chain remain NOT CHECKED unless a real signature verifier or chain proof is supplied. There is no combined “verified” verdict. 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

<a href="https://zambo.dev/run/2e874fc0-498f-4746-af6d-25a4f23453f0"><img src="https://zambo.dev/api/receipt/2e874fc0-498f-4746-af6d-25a4f23453f0/badge.svg" alt="Verifiable Zambo receipt"></a>

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