Verifiable receipt f426fa82 - capability_search result | Zambo

Verifiable receipt for a capability_search call on Zambo: {"query":"get current time","status":"execution_plan","execution_plan":[{"step":1,"product":"Zambo Che

Observed result

{"query":"get current time","status":"execution_plan","execution_plan":[{"step":1,"product":"Zambo Check","classification":"fully_executable_in_chat","tool":"zambo_check","callable":"zambo_check({check: \"get current time\"})","required_arguments":["check"],"why_relevant":"This is a verification, evidence, freshness, conflict, completion, or preflight intent.","when_to_use":["before trusting uncertain information","before using a third-party tool","before consequential actions","before claiming a task completed","after an execution when evidence needs checking"],"expected_output":{"status":"verified|uncertain|contradicted|unsafe|stale|incomplete","confidence":"high|medium|low|none","reason":"string","evidence":"object[]","assertion_state":"object{claimed,observed,verified,scope}","freshness":"object{checked_at,source_count,newest_source_at}","conflicts":"object[]","risk":"object","provenance":"object","recommended_action":"string","next_action":"string","next_capability":"string|null","proof":"object"},"approval_required":false,"retry_safe":true,"access":{"free_tier":"unlimited","paid":"included in Zambo Pass","per_call":"free"},"input_hints":{"type":"object","properties":{"check":{"oneOf":[{"type":"string"},{"type":"object"}],"description":"What should be checked? Natural language or a structured check object."},"context":{"oneOf":[{"type":"string"},{"type":"object"}],"description":"Optional evidence, source URLs, run/receipt metadata, claims, or an output value/schema."},"type":{"type":"string","enum":["auto","truth","freshness","provenance","conflict","tool","action","authorization","execution","completion","output","security"],"description":"Deterministic check route. Defaults to auto."},"url":{"type":"string","description":"Legacy project URL check. Also accepted as a source URL for universal checks."},"github":{"type":"string","description":"Legacy optional GitHub repo URL for visible code/repository signals."},"email":{"type":"string","description":"Optional Zambo Pass email for unlimited checks."}},"required":[]}}],"next_step":"If the check says execution is appropriate, call zambo_universal with the original outcome and one stable _session_id; verify the receipt afterward.","mcp_url":"https://zambo.dev/api/mcp"}

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?

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

SHA-256 commitment: Recomputed by the linked API v2 check from the exact decoded bytes
Signature: NOT CHECKED; no Ed25519 signature or pinned key is supplied
Chain: NOT CHECKED; no append-only chain proof is validated
Stored timestamp: 2026-10-05T11:09:52.752Z; external immutability is not checked

Proof of observed execution

EXECUTED BY ZAMBO

Receipt ID: f426fa82-570e-419d-aafe-e532c4eba24d
SHA-256 output hash: sha256:828cd50cb05b5a88739dca9b521d1230cdf636590c3dd442df4a31b3be66c865
Canonical bytes: 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
Timestamp: 2026-10-05T11:09:52.752Z

Bound call context

Receipt schema: 0.3
Tool name: capability_search
Tool version: 4.0.0
Permission scope: public
Caller type: anonymous
Caller ID: sha256:804f0d10802dba02bd192c330eaccce53bb50d77826307b86ef2f0837da87cff
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: d85a1d41581dc87adeb402345ded8f33f18e959c637711bb0b00ac0b051721b3
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":"2026-10-05T11:09:52.737Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:828cd50cb05b5a88739dca9b521d1230cdf636590c3dd442df4a31b3be66c865","receipt_uuid":"f426fa82-570e-419d-aafe-e532c4eba24d","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

[![Verifiable Zambo receipt](https://zambo.dev/api/receipt/f426fa82-570e-419d-aafe-e532c4eba24d/badge.svg)](https://zambo.dev/run/f426fa82-570e-419d-aafe-e532c4eba24d)

HTML

<a href="https://zambo.dev/run/f426fa82-570e-419d-aafe-e532c4eba24d"><img src="https://zambo.dev/api/receipt/f426fa82-570e-419d-aafe-e532c4eba24d/badge.svg" alt="Verifiable Zambo receipt"></a>

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