Verifiable receipt 9ab6c014 - capability_search result | Zambo

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

Observed result

{"query":"current time","status":"execution_plan","execution_plan":[{"step":1,"product":"Zambo Check","classification":"fully_executable_in_chat","tool":"zambo_check","callable":"zambo_check({check: \"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"}

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.

Keep the work moving

This receipt proves the call completed. When the free allowance is not enough, choose the access path that fits the job.

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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: 2026-10-03T11:09:29.800Z

Proof of observed execution

EXECUTED BY ZAMBO

Receipt ID: 9ab6c014-242a-406b-aca7-01e83c98913a
SHA-256 output hash: sha256:27e5652ebe10261129e12edaa8df1d57162c75f3d743e041e01e140a07016a1e
Canonical bytes: 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
Timestamp: 2026-10-03T11:09:29.800Z

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: f2cd525a701489370ac414c73a7e8aed7907e42dcfe5fd045f8c6db1e9e29edc
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":"2026-10-03T11:09:29.784Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:27e5652ebe10261129e12edaa8df1d57162c75f3d743e041e01e140a07016a1e","receipt_uuid":"9ab6c014-242a-406b-aca7-01e83c98913a","schema_version":"zambo-receipt-anchor/1"}

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

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.

Embed this receipt

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