Verifiable receipt 51c9b0bb - capability_search result | Zambo

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

Provenance for every timeline entry

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":"free tier limits","status":"execution_plan","tools":[{"rank":1,"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":32,"why_relevant":"free, tier"},{"rank":2,"name":"zambo_universal","product":"Zambo API","description":"One endpoint. 100+ tools. Free. No API key.","classification":"fully_executable_in_chat","tool":"zambo_universal","callable":"zambo_universal({need: \"<outcome>\", _session_id: \"<stable conversation id>\"})","required_arguments":["need"],"side_effects":"Routes to a live tool; inspect the returned status before claiming completion.","access":{"free_tier":"20/day","paid":"unlimited (Zambo Pass $49/mo)","per_call":"free"},"approval_required":true,"retry_safe":false,"expected_output":{"ok":"boolean","understood":"string","planned_tools":"string[]","executed_tools":"string[]","executed":"boolean","observed_status":"executed|planned|answered|failed|not_executed_here","result_status":"executed|planned|answered|verified|failed","grounding":"live_tool|model_only|model_plus_user_context|none","sources":"object[]","result":"string","verify":"object","run_id":"string"},"input_hints":{"need":{"type":"string","description":"Natural language description of what you need. Any length. Also accepts: message, query, prompt, input, goal, text. Example: 'How do I protect my AI agent from prompt injection?'"}},"relevance_score":15,"why_relevant":"free"},{"rank":3,"name":"zambro_analyze","product":"ZAMBRO","description":"Free deterministic opportunity scanner — 21 branches, any input","classification":"fully_executable_in_chat","tool":"zambro_analyze","callable":"zambro_analyze({input: \"<URL, repo, idea, or description>\"})","required_arguments":["input"],"side_effects":"Read-only analysis.","access":{"free_tier":"unlimited","paid":"included in Zambo Pass","per_call":"free"},"approval_required":false,"retry_safe":true,"expected_output":{"branch":"string","confidence":"number","bottleneck":"string","fastest_win":"string","playbook":"string[]"},"input_hints":{"input":{"type":"string","description":"Anything to analyze: URL, wallet address, GitHub repo URL, business description, product idea, or goal (max 2000 chars). Example: 'https://github.com/owner/repo' or 'My SaaS idea: AI code reviewer for solo founders' or 'zambo.dev'"}},"relevance_score":15,"why_relevant":"free"},{"rank":4,"product":"Zambo Pass","description":"$49/mo — priority access to the listed Zambo allowances. Product and provider limits apply.","classification":"requires_human_web_action","human_action":"Card/Apple Pay checkout and subscription consent must be completed by the purchaser. Afterward, chat can verify access with builder_pass_check({email}).","web_link":"https://zambo.dev/pricing","relevance_score":15,"why_relevant":"tier, limits"},{"rank":5,"name":"scam_check","product":"SCAMRA","description":"Free scammer intelligence — check any domain, IP, wallet, URL against 30,000+ threat records","classification":"fully_executable_in_chat","tool":"scam_check","callable":"scam_check({target: \"<domain-or-url-or-wallet>\"})","required_arguments":["target"],"side_effects":"Read-only SCAMRA threat-intelligence lookup with optional Criptic wallet cross-reference. An empty result is not proof of safety.","access":{"free_tier":"20/day","paid":"included in Zambo Pass","per_call":"free"},"approval_required":false,"retry_safe":true,"expected_output":{"verdict":"clean|suspicious|scam","confidence":"number","reasons":"string[]","sources":"string[]","first_seen":"string | undefined"},"input_hints":{"target":{"type":"string","description":"Wallet address, contract address, domain, or full URL."}},"relevance_score":5,"why_relevant":"free"}],"execution_plan":[{"step":1,"rank":1,"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":32,"why_relevant":"free, tier"},{"step":2,"rank":2,"name":"zambo_universal","product":"Zambo API","description":"One endpoint. 100+ tools. Free. No API key.","classification":"fully_executable_in_chat","tool":"zambo_universal","callable":"zambo_universal({need: \"<outcome>\", _session_id: \"<stable conversation id>\"})","required_arguments":["need"],"side_effects":"Routes to a live tool; inspect the returned status before claiming completion.","access":{"free_tier":"20/day","paid":"unlimited (Zambo Pass $49/mo)","per_call":"free"},"approval_required":true,"retry_safe":false,"expected_output":{"ok":"boolean","understood":"string","planned_tools":"string[]","executed_tools":"string[]","executed":"boolean","observed_status":"executed|planned|answered|failed|not_executed_here","result_status":"executed|planned|answered|verified|failed","grounding":"live_tool|model_only|model_plus_user_context|none","sources":"object[]","result":"string","verify":"object","run_id":"string"},"input_hints":{"need":{"type":"string","description":"Natural language description of what you need. Any length. Also accepts: message, query, prompt, input, goal, text. Example: 'How do I pro

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Verification checks

Proof of observed execution

EXECUTED BY ZAMBO

Receipt ID
51c9b0bb-955d-4ed8-87e2-feeb6a6d4dd7
SHA-256 output hash
sha256:c4a02d47f86910bc97273d2f0c368280f3f356002e1f92682665090cb35e6146
Canonical bytes
{"caller":{"id":"sha256:4ac48427f6ed0fd31aa86c123af7f57626010726fdbf13ddab3a647c0fce87cd","type":"anonymous"},"output":{"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.","execution_plan":[{"access":{"free_tier":"unlimited","paid":"included in Zambo Pass","per_call":"free"},"approval_required":false,"callable":"credithunt({stack: [\"vercel\", \"aws\"], stage: \"early\"})","classification":"fully_executable_in_chat","description":"Live verified index of every AI/cloud startup credit program — free API","expected_output":{"count":"number","matched":"object[]","programs":"object[]"},"input_hints":{},"name":"credithunt","product":"CreditHunt","rank":1,"relevance_score":32,"required_arguments":[],"retry_safe":true,"side_effects":"Read-only current-program lookup.","step":1,"tool":"credithunt","why_relevant":"free, tier"},{"access":{"free_tier":"20/day","paid":"unlimited (Zambo Pass $49/mo)","per_call":"free"},"approval_required":true,"callable":"zambo_universal({need: \"<outcome>\", _session_id: \"<stable conversation id>\"})","classification":"fully_executable_in_chat","description":"One endpoint. 100+ tools. Free. No API key.","expected_output":{"executed":"boolean","executed_tools":"string[]","grounding":"live_tool|model_only|model_plus_user_context|none","observed_status":"executed|planned|answered|failed|not_executed_here","ok":"boolean","planned_tools":"string[]","result":"string","result_status":"executed|planned|answered|verified|failed","run_id":"string","sources":"object[]","understood":"string","verify":"object"},"input_hints":{"need":{"description":"Natural language description of what you need. Any length. Also accepts: message, query, prompt, input, goal, text. Example: 'How do I protect my AI agent from prompt injection?'","type":"string"}},"name":"zambo_universal","product":"Zambo API","rank":2,"relevance_score":15,"required_arguments":["need"],"retry_safe":false,"side_effects":"Routes to a live tool; inspect the returned status before claiming completion.","step":2,"tool":"zambo_universal","why_relevant":"free"},{"access":{"free_tier":"unlimited","paid":"included in Zambo Pass","per_call":"free"},"approval_required":false,"callable":"zambro_analyze({input: \"<URL, repo, idea, or description>\"})","classification":"fully_executable_in_chat","description":"Free deterministic opportunity scanner — 21 branches, any input","expected_output":{"bottleneck":"string","branch":"string","confidence":"number","fastest_win":"string","playbook":"string[]"},"input_hints":{"input":{"description":"Anything to analyze: URL, wallet address, GitHub repo URL, business description, product idea, or goal (max 2000 chars). Example: 'https://github.com/owner/repo' or 'My SaaS idea: AI code reviewer for solo founders' or 'zambo.dev'","type":"string"}},"name":"zambro_analyze","product":"ZAMBRO","rank":3,"relevance_score":15,"required_arguments":["input"],"retry_safe":true,"side_effects":"Read-only analysis.","step":3,"tool":"zambro_analyze","why_relevant":"free"},{"classification":"requires_human_web_action","description":"$49/mo — priority access to the listed Zambo allowances. Product and provider limits apply.","human_action":"Card/Apple Pay checkout and subscription consent must be completed by the purchaser. Afterward, chat can verify access with builder_pass_check({email}).","product":"Zambo Pass","rank":4,"relevance_score":15,"step":4,"web_link":"https://zambo.dev/pricing","why_relevant":"tier, limits"},{"access":{"free_tier":"20/day","paid":"included in Zambo Pass","per_call":"free"},"approval_required":false,"callable":"scam_check({target: \"<domain-or-url-or-wallet>\"})","classification":"fully_executable_in_chat","description":"Free scammer intelligence — check any domain, IP, wallet, URL against 30,000+ threat records","expected_output":{"confidence":"number","first_seen":"string | undefined","reasons":"string[]","sources":"string[]","verdict":"clean|suspicious|scam"},"input_hints":{"target":{"description":"Wallet address, contract address, domain, or full URL.","type":"string"}},"name":"scam_check","product":"SCAMRA","rank":5,"relevance_score":5,"required_arguments":["target"],"retry_safe":true,"side_effects":"Read-only SCAMRA threat-intelligence lookup with optional Criptic wallet cross-reference. An empty result is not proof of safety.","step":5,"tool":"scam_check","why_relevant":"free"}],"note":"Links appear only where the confirmed capability requires a human web action, consent, payment, or visual administration.","query":"free tier limits","status":"execution_plan","tools":[{"access":{"free_tier":"unlimited","paid":"included in Zambo Pass","per_call":"free"},"approval_required":false,"callable":"credithunt({stack: [\"vercel\", \"aws\"], stage: \"early\"})","classification":"fully_executable_in_chat","description":"Live verified index of every AI/cloud startup credit program — free API","expected_output":{"count":"number","matched":"object[]","programs":"object[]"},"input_hints":{},"name":"credithunt","product":"CreditHunt","rank":1,"relevance_score":32,"required_arguments":[],"retry_safe":true,"side_effects":"Read-only current-program lookup.","tool":"credithunt","why_relevant":"free, tier"},{"access":{"free_tier":"20/day","paid":"unlimited (Zambo Pass $49/mo)","per_call":"free"},"approval_required":true,"callable":"zambo_universal({need: \"<outcome>\", _session_id: \"<stable conversation id>\"})","classification":"fully_executable_in_chat","description":"One endpoint. 100+ tools. Free. No API key.","expected_output":{"executed":"boolean","executed_tools":"string[]","grounding":"live_tool|model_only|model_plus_user_context|none","observed_status":"executed|planned|answered|failed|not_executed_here","ok":"boolean","planned_tools":"string[]","result":"string","result_status":"executed|planned|answered|verified|failed","run_id":"string","sources":"object[]","understood":"string","verify":"object"},"input_hints":{"need":{"description":"Natural language description of what you need. Any length. Also accepts: message, query, prompt, input, goal, text. Example: 'How do I protect my AI agent from prompt injection?'","type":"string"}},"name":"zambo_universal","product":"Zambo API","rank":2,"relevance_score":15,"required_arguments":["need"],"retry_safe":false,"side_effects":"Routes to a live tool; inspect the returned status before claiming completion.","tool":"zambo_universal","why_relevant":"free"},{"access":{"free_tier":"unlimited","paid":"included in Zambo Pass","per_call":"free"},"approval_required":false,"callable":"zambro_analyze({input: \"<URL, repo, idea, or description>\"})","classification":"fully_executable_in_chat","description":"Free deterministic opportunity scanner — 21 branches, any input","expected_output":{"bottleneck":"string","branch":"string","confidence":"number","fastest_win":"string","playbook":"string[]"},"input_hints":{"input":{"description":"Anything to analyze: URL, wallet address, GitHub repo URL, business description, product idea, or goal (max 2000 chars). Example: 'https://github.com/owner/repo' or 'My SaaS idea: AI code reviewer for solo founders' or 'zambo.dev'","type":"string"}},"name":"zambro_analyze","product":"ZAMBRO","rank":3,"relevance_score":15,"required_arguments":["input"],"retry_safe":true,"side_effects":"Read-only analysis.","tool":"zambro_analyze","why_relevant":"free"},{"classification":"requires_human_web_action","description":"$49/mo — priority access to the listed Zambo allowances. Product and provider limits apply.","human_action":"Card/Apple Pay checkout and subscription consent must be completed by the purchaser. Afterward, chat can verify access with builder_pass_check({email}).","product":"Zambo Pass","rank":4,"relevance_score":15,"web_link":"https://zambo.dev/pricing","why_relevant":"tier, limits"},{"access":{"free_tier":"20/day","paid":"included in Zambo Pass","per_call":"free"},"approval_required":false,"callable":"scam_check({target: \"<domain-or-url-or-wallet>\"})","classification":"fully_executable_in_chat","description":"Free scammer intelligence — check any domain, IP, wallet, URL against 30,000+ threat records","expected_output":{"confidence":"number","first_seen":"string | undefined","reasons":"string[]","sources":"string[]","verdict":"clean|suspicious|scam"},"input_hints":{"target":{"description":"Wallet address, contract address, domain, or full URL.","type":"string"}},"name":"scam_check","product":"SCAMRA","rank":5,"relevance_score":5,"required_arguments":["target"],"retry_safe":true,"side_effects":"Read-only SCAMRA threat-intelligence lookup with optional Criptic wallet cross-reference. An empty result is not proof of safety.","tool":"scam_check","why_relevant":"free"}]},"receipt_schema_version":"0.3","side_effects":{"declaration_hash":"sha256:45aad38f3aa982b9aafe92ecb416ebe98791eddbaf8ab6df0bd08605b7c1bfee","declared":["none"],"schema_version":"zambo-side-effects/1"},"tool":{"name":"capability_search","scope":"public","version":"4.0.0"}}
Timestamp

Bound call context

Receipt schema
0.3
Tool name
capability_search
Tool version
4.0.0
Permission scope
public
Caller type
anonymous
Caller ID
sha256:4ac48427f6ed0fd31aa86c123af7f57626010726fdbf13ddab3a647c0fce87cd
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
sha256:438eda7c649da2a27458994fbd0bf2c3a73e129e2c1f5f2781aa4924dc32313a
Byte length
2322

Fetch exact evidence bytes

Neutral Nostr anchor

Event ID
9f6edffa9b1e7a7629f0bbf9c1527262af281fa3650daaa8084f37c72eb2603d
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":"2026-09-22T16:03:39.522Z","evidence_byte_length":2322,"evidence_sha256":"sha256:438eda7c649da2a27458994fbd0bf2c3a73e129e2c1f5f2781aa4924dc32313a","evidence_url":"https://zambo.dev/api/evidence/438eda7c649da2a27458994fbd0bf2c3a73e129e2c1f5f2781aa4924dc32313a","output_sha256":"sha256:c4a02d47f86910bc97273d2f0c368280f3f356002e1f92682665090cb35e6146","receipt_uuid":"51c9b0bb-955d-4ed8-87e2-feeb6a6d4dd7","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 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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