Verifiable receipt 3f65f766 — capability_search result | Zambo

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

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":"qr code","status":"execution_plan","tools":[{"rank":1,"name":"qr_generate","product":"qr_generate","description":"Generate a QR code for any URL, text, phone number, WiFi credentials, contact info, or anything else — instantly. Returns a direct image URL you can share, embed, print, or put on a flyer. Free, no auth, no limits. Examples: business website, payment link, event RSVP, WiFi password, social media profile.","classification":"fully_executable_in_chat","tool":"qr_generate","callable":"qr_generate(data: ...)","required_arguments":["data"],"access":{"free_tier":"unlimited","paid":"unlimited","per_call":"free"},"approval_required":false,"retry_safe":true,"expected_output":{"qr_url":"string","markdown":"string","data":"string","size":"string"},"input_hints":{"data":{"type":"string","description":"What to encode in the QR code. Can be a URL, text, phone number, email, WiFi config, vCard, or any string."},"size":{"type":"number","description":"Size in pixels (square). Default: 400. Max: 1000."}},"relevance_score":1,"why_relevant":"Matched a natural-language alias to the exact native tool."}],"execution_plan":[{"step":1,"rank":1,"name":"qr_generate","product":"qr_generate","description":"Generate a QR code for any URL, text, phone number, WiFi credentials, contact info, or anything else — instantly. Returns a direct image URL you can share, embed, print, or put on a flyer. Free, no auth, no limits. Examples: business website, payment link, event RSVP, WiFi password, social media profile.","classification":"fully_executable_in_chat","tool":"qr_generate","callable":"qr_generate(data: ...)","required_arguments":["data"],"access":{"free_tier":"unlimited","paid":"unlimited","per_call":"free"},"approval_required":false,"retry_safe":true,"expected_output":{"qr_url":"string","markdown":"string","data":"string","size":"string"},"input_hints":{"data":{"type":"string","description":"What to encode in the QR code. Can be a URL, text, phone number, email, WiFi config, vCard, or any string."},"size":{"type":"number","description":"Size in pixels (square). Default: 400. Max: 1000."}},"relevance_score":1,"why_relevant":"Matched a natural-language alias to the exact native tool."}],"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: 2026-09-21T15:00:14.062Z

Proof of observed execution

Receipt ID: 3f65f766-cdaa-470b-b204-7692ddeca5a9
SHA-256 output hash: sha256:313869cd4ce351c0709fba3fcbf6e2233e1b7c97a15b56a98c39839267ae4aaa
Canonical bytes: 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
Timestamp: 2026-09-21T15:00:14.062Z

Bound call context

Receipt schema: 0.3
Tool name: capability_search
Tool version: 4.0.0
Permission scope: public
Caller type: anonymous
Caller ID: sha256:48b1ab964255e4b3860366086041d5705f5c13141443fb8cd19d27b08bdd02cb
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: 407b33952b57bcda495edb81e65ad13872b772ea25c2847fa40b3a4f4867781a
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":"2026-09-21T15:00:14.049Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:313869cd4ce351c0709fba3fcbf6e2233e1b7c97a15b56a98c39839267ae4aaa","receipt_uuid":"3f65f766-cdaa-470b-b204-7692ddeca5a9","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 doesn't say verified, don't trust this page. See the Nostr anchor event on a public viewer — the fingerprint is timestamped outside Zambo too.

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