Verifiable receipt 1e9ef271 - capability_search result | Zambo

Verifiable receipt for a capability_search call on Zambo: {"query":"prompt compression context window optimization reduce cost efficiency","status":"execution_p

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.

Observed result

{"query":"prompt compression context window optimization reduce cost efficiency","status":"execution_plan","tools":[{"rank":1,"product":"VeriAI","description":"Cryptographic trust score for any AI-generated output","classification":"requires_human_web_action","human_action":"The public VeriAI product has no confirmed callable Zambo MCP route; use its web flow.","web_link":"https://veriai.site","relevance_score":10,"why_relevant":"prompt"},{"rank":2,"product":"Govri","description":"AI governance policy from 5 questions in 60 seconds","classification":"requires_human_web_action","human_action":"The public Govri product has no confirmed callable Zambo MCP route; policy publication requires human review.","web_link":"https://govri.xyz","relevance_score":10,"why_relevant":"prompt"},{"rank":3,"name":"credithunt","product":"CreditHunt","description":"Live verified index of every AI/cloud startup credit program — free API","classification":"fully_executable_in_chat","tool":"credithunt","callable":"credithunt({stack: [\"vercel\", \"aws\"], stage: \"early\"})","required_arguments":[],"side_effects":"Read-only current-program lookup.","access":{"free_tier":"unlimited","paid":"included in Zambo Pass","per_call":"free"},"approval_required":false,"retry_safe":true,"expected_output":{"programs":"object[]","count":"number","matched":"object[]"},"input_hints":{},"relevance_score":10,"why_relevant":"cost"}],"execution_plan":[{"step":1,"rank":1,"product":"VeriAI","description":"Cryptographic trust score for any AI-generated output","classification":"requires_human_web_action","human_action":"The public VeriAI product has no confirmed callable Zambo MCP route; use its web flow.","web_link":"https://veriai.site","relevance_score":10,"why_relevant":"prompt"},{"step":2,"rank":2,"product":"Govri","description":"AI governance policy from 5 questions in 60 seconds","classification":"requires_human_web_action","human_action":"The public Govri product has no confirmed callable Zambo MCP route; policy publication requires human review.","web_link":"https://govri.xyz","relevance_score":10,"why_relevant":"prompt"},{"step":3,"rank":3,"name":"credithunt","product":"CreditHunt","description":"Live verified index of every AI/cloud startup credit program — free API","classification":"fully_executable_in_chat","tool":"credithunt","callable":"credithunt({stack: [\"vercel\", \"aws\"], stage: \"early\"})","required_arguments":[],"side_effects":"Read-only current-program lookup.","access":{"free_tier":"unlimited","paid":"included in Zambo Pass","per_call":"free"},"approval_required":false,"retry_safe":true,"expected_output":{"programs":"object[]","count":"number","matched":"object[]"},"input_hints":{},"relevance_score":10,"why_relevant":"cost"}],"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":"Links appear only where the confirmed capability requires a human web action, consent, payment, or visual administration."}

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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: 2026-09-22T20:25:18.058Z

Proof of observed execution

EXECUTED BY ZAMBO

Receipt ID: 1e9ef271-5d15-4454-aca3-e137a147ebad
SHA-256 output hash: sha256:86ea80de54a304e8d6c670410c6d2b1b18aceb93f7f62b8b36379fcc3f52b122
Canonical bytes: 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
Timestamp: 2026-09-22T20:25:18.058Z

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:a2fb665fbdb67c09cd258cc9c9747d8800f82c120fa9d6c5be79d671f308d967
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: sha256:782c95955e1483f83548cf7f6bcd7f4ebbc2c14e85c90467e9cdbe0cae2a3f10
Byte length: 1418

Fetch exact evidence bytes

Neutral Nostr anchor

Event ID: c0a0475a9df71b0a48ef31b2c97bf3ba05a0b9118304885339fe513fa3a3999a
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":"2026-09-22T20:25:18.006Z","evidence_byte_length":1418,"evidence_sha256":"sha256:782c95955e1483f83548cf7f6bcd7f4ebbc2c14e85c90467e9cdbe0cae2a3f10","evidence_url":"https://zambo.dev/api/evidence/782c95955e1483f83548cf7f6bcd7f4ebbc2c14e85c90467e9cdbe0cae2a3f10","output_sha256":"sha256:86ea80de54a304e8d6c670410c6d2b1b18aceb93f7f62b8b36379fcc3f52b122","receipt_uuid":"1e9ef271-5d15-4454-aca3-e137a147ebad","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.

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