Verifiable receipt 20ddf4aa — capability_search result | Zambo

Verifiable receipt for a capability_search call on Zambo: {"query":"weather","status":"execution_plan","tools":[{"rank":1,"name":"weather","product":"weather","

What is this?

An AI agent did real work through Zambo, and this page is the proof. The SHA-256 hash below is a fingerprint of exactly what the agent produced — change one character of the output and the fingerprint changes. The timestamp shows when it ran. The Nostr anchor posts that fingerprint to public relays, so the record exists outside Zambo too — anyone can look it up by the event ID below. You don't have to take the agent's word for it. 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.

Observed result

{"query":"weather","status":"execution_plan","tools":[{"rank":1,"name":"weather","product":"weather","description":"Get real-time weather for any city, anywhere in the world — right now, no API key needed. Claude has no live data access; this tool bridges the gap. Returns current conditions, temperature, humidity, wind, UV index, and a 3-day forecast. Free, unlimited, always up-to-date.","classification":"fully_executable_in_chat","tool":"weather","callable":"weather(location: ...)","required_arguments":["location"],"access":{"free_tier":"unlimited","paid":"unlimited","per_call":"free"},"approval_required":false,"retry_safe":true,"expected_output":{"city":"string","current":"object","forecast_3day":"object[]","summary":"string"},"input_hints":{"location":{"type":"string","description":"City or location name, e.g. 'New York', 'Tokyo', 'London', 'Lagos', 'São Paulo', 'Austin TX'. Also accepts airport codes."},"units":{"type":"string","description":"Temperature units: 'f' for Fahrenheit (default for US), 'c' for Celsius (default for everywhere else)."}},"relevance_score":1,"why_relevant":"Matched the exact native tool name in the live catalog."}],"execution_plan":[{"step":1,"rank":1,"name":"weather","product":"weather","description":"Get real-time weather for any city, anywhere in the world — right now, no API key needed. Claude has no live data access; this tool bridges the gap. Returns current conditions, temperature, humidity, wind, UV index, and a 3-day forecast. Free, unlimited, always up-to-date.","classification":"fully_executable_in_chat","tool":"weather","callable":"weather(location: ...)","required_arguments":["location"],"access":{"free_tier":"unlimited","paid":"unlimited","per_call":"free"},"approval_required":false,"retry_safe":true,"expected_output":{"city":"string","current":"object","forecast_3day":"object[]","summary":"string"},"input_hints":{"location":{"type":"string","description":"City or location name, e.g. 'New York', 'Tokyo', 'London', 'Lagos', 'São Paulo', 'Austin TX'. Also accepts airport codes."},"units":{"type":"string","description":"Temperature units: 'f' for Fahrenheit (default for US), 'c' for Celsius (default for everywhere else)."}},"relevance_score":1,"why_relevant":"Matched the exact native tool name in the live catalog."}],"continuity":"For a multi-step job, call zambo_universal with the real request and one stable _session_id; reuse it with mode:'continue', then mode:'verify' before declaring completion.","note":"This result came from the live 131-tool catalog, not the product search index."}

Keep the work moving

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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: 2026-09-21T16:42:43.826Z

Proof of observed execution

Receipt ID: 20ddf4aa-3a3e-447f-a75e-6ba94920d8fe
SHA-256 output hash: sha256:4afc2eb941e5a892ee5c67b3d5fd39fcf22f8cd289d792e7d5511ea2f9e72f44
Canonical bytes: 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
Timestamp: 2026-09-21T16:42:43.826Z

Bound call context

Receipt schema: 0.3
Tool name: capability_search
Tool version: 4.0.0
Permission scope: public
Caller type: anonymous
Caller ID: sha256:988d0f34ab2ccad69af547bfa01724e433bfeeb6a93690df32f5dbecb6dbac0f
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: a2ec5489ce60739e3cb5a66d16987c7ac1f9676e86e848364fea35e5ec427d4a
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":"2026-09-21T16:42:43.810Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:4afc2eb941e5a892ee5c67b3d5fd39fcf22f8cd289d792e7d5511ea2f9e72f44","receipt_uuid":"20ddf4aa-3a3e-447f-a75e-6ba94920d8fe","schema_version":"zambo-receipt-anchor/1"}

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

Check this hash yourself

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