Verifiable receipt 28a325ff — capability_search result | Zambo

Verifiable receipt for a capability_search call on Zambo: {"query":"tools","status":"execution_plan","tools":[{"rank":1,"name":"zambo_universal","product":"X711

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":"tools","status":"execution_plan","tools":[{"rank":1,"name":"zambo_universal","product":"X711","description":"MCP gas station for AI agents — tools + x402 payments on Base","classification":"fully_executable_in_chat","tool":"zambo_universal","callable":"zambo_universal({need: \"Use X711 for the requested execution\"})","required_arguments":["need"],"side_effects":"Some external routes can write or transact; request confirmation before a consequential route.","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":22,"why_relevant":"tools"},{"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":"tools"},{"rank":3,"name":"zambot_spark","product":"ZAMBOT","description":"Strategy breakthroughs from 100+ tools + swarm intelligence","classification":"fully_executable_in_chat","tool":"zambot_spark","callable":"zambot_spark({goal: \"<goal>\"})","required_arguments":["goal"],"side_effects":"Creates a shareable Spark proof.","access":{"free_tier":"3/day","paid":"50/month (Zambo Pass)","per_call":"0.001 USDC x402"},"approval_required":true,"retry_safe":false,"expected_output":{"spark":"string","proof_hash":"string","spark_url":"string","share_url":"string","verify_url":"string","domain":"string","agent_debate":"object{frames,disagreement,decision,falsifier,experiment_48h,success_condition,provider_status}"},"input_hints":{"goal":{"type":"string","description":"Your goal or strategic challenge (10–2000 chars). Example: 'Get my SaaS from 0 to 100 paying users in 60 days'"}},"relevance_score":5,"why_relevant":"tools"}],"execution_plan":[{"step":1,"rank":1,"name":"zambo_universal","product":"X711","description":"MCP gas station for AI agents — tools + x402 payments on Base","classification":"fully_executable_in_chat","tool":"zambo_universal","callable":"zambo_universal({need: \"Use X711 for the requested execution\"})","required_arguments":["need"],"side_effects":"Some external routes can write or transact; request confirmation before a consequential route.","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":22,"why_relevant":"tools"},{"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 protect my AI agent from prompt injection?'"}},"relevance_score":15,"why_relevant":"tools"},{"step":3,"rank":3,"name":"zambot_spark","product":"ZAMBOT","descript

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.

UNLOCK 24H DAY PASS ($1.49) → ZAMBO PASS $49 →

RUN YOUR OWN FREE CALL →

Or re-run this exact call — same tool, same arguments.

Share on X ·

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: 2026-09-22T12:39:26.309Z

Proof of observed execution

Receipt ID: 28a325ff-64e2-404e-a65f-6da492062e74
SHA-256 output hash: sha256:393cd29fc35db0dbe7d7b28440e4e328cf4abf74e457c0a3cf0d75512f1cfa2f
Canonical bytes: {"caller":{"id":"sha256:1e97eab31123f20e1fcc8e864137f8e62964afef34b89b7b35ac8da2c9a70859","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":"20/day","paid":"unlimited (Zambo Pass $49/mo)","per_call":"free"},"approval_required":true,"callable":"zambo_universal({need: \"Use X711 for the requested execution\"})","classification":"fully_executable_in_chat","description":"MCP gas station for AI agents — tools + x402 payments on Base","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":"X711","rank":1,"relevance_score":22,"required_arguments":["need"],"retry_safe":false,"side_effects":"Some external routes can write or transact; request confirmation before a consequential route.","step":1,"tool":"zambo_universal","why_relevant":"tools"},{"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":"tools"},{"access":{"free_tier":"3/day","paid":"50/month (Zambo Pass)","per_call":"0.001 USDC x402"},"approval_required":true,"callable":"zambot_spark({goal: \"<goal>\"})","classification":"fully_executable_in_chat","description":"Strategy breakthroughs from 100+ tools + swarm intelligence","expected_output":{"agent_debate":"object{frames,disagreement,decision,falsifier,experiment_48h,success_condition,provider_status}","domain":"string","proof_hash":"string","share_url":"string","spark":"string","spark_url":"string","verify_url":"string"},"input_hints":{"goal":{"description":"Your goal or strategic challenge (10–2000 chars). Example: 'Get my SaaS from 0 to 100 paying users in 60 days'","type":"string"}},"name":"zambot_spark","product":"ZAMBOT","rank":3,"relevance_score":5,"required_arguments":["goal"],"retry_safe":false,"side_effects":"Creates a shareable Spark proof.","step":3,"tool":"zambot_spark","why_relevant":"tools"}],"note":"Links appear only where the confirmed capability requires a human web action, consent, payment, or visual administration.","query":"tools","status":"execution_plan","tools":[{"access":{"free_tier":"20/day","paid":"unlimited (Zambo Pass $49/mo)","per_call":"free"},"approval_required":true,"callable":"zambo_universal({need: \"Use X711 for the requested execution\"})","classification":"fully_executable_in_chat","description":"MCP gas station for AI agents — tools + x402 payments on Base","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":"X711","rank":1,"relevance_score":22,"required_arguments":["need"],"retry_safe":false,"side_effects":"Some external routes can write or transact; request confirmation before a consequential route.","tool":"zambo_universal","why_relevant":"tools"},{"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":"tools"},{"access":{"free_tier":"3/day","paid":"50/month (Zambo Pass)","per_call":"0.001 USDC x402"},"approval_required":true,"callable":"zambot_spark({goal: \"<goal>\"})","classification":"fully_executable_in_chat","description":"Strategy breakthroughs from 100+ tools + swarm intelligence","expected_output":{"agent_debate":"object{frames,disagreement,decision,falsifier,experiment_48h,success_condition,provider_status}","domain":"string","proof_hash":"string","share_url":"string","spark":"string","spark_url":"string","verify_url":"string"},"input_hints":{"goal":{"description":"Your goal or strategic challenge (10–2000 chars). Example: 'Get my SaaS from 0 to 100 paying users in 60 days'","type":"string"}},"name":"zambot_spark","product":"ZAMBOT","rank":3,"relevance_score":5,"required_arguments":["goal"],"retry_safe":false,"side_effects":"Creates a shareable Spark proof.","tool":"zambot_spark","why_relevant":"tools"}]},"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: 2026-09-22T12:39:26.309Z

Bound call context

Receipt schema: 0.3
Tool name: capability_search
Tool version: 4.0.0
Permission scope: public
Caller type: anonymous
Caller ID: sha256:1e97eab31123f20e1fcc8e864137f8e62964afef34b89b7b35ac8da2c9a70859
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: sha256:6a03197d6badfd77ebb0bb3757e1d6edc49a49e68b86d80c092df07426824e2d
Byte length: 1369

Fetch exact evidence bytes

Neutral Nostr anchor

Event ID: 068726523c3aa5029d5ef79de2b08e2ad3985a6e71ddbffa43b6f162fda079a5
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":"2026-09-22T12:39:26.263Z","evidence_byte_length":1369,"evidence_sha256":"sha256:6a03197d6badfd77ebb0bb3757e1d6edc49a49e68b86d80c092df07426824e2d","evidence_url":"https://zambo.dev/api/evidence/6a03197d6badfd77ebb0bb3757e1d6edc49a49e68b86d80c092df07426824e2d","output_sha256":"sha256:393cd29fc35db0dbe7d7b28440e4e328cf4abf74e457c0a3cf0d75512f1cfa2f","receipt_uuid":"28a325ff-64e2-404e-a65f-6da492062e74","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 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.

Embed this receipt

Markdown

[![Verifiable Zambo receipt](https://zambo.dev/api/receipt/28a325ff-64e2-404e-a65f-6da492062e74/badge.svg)](https://zambo.dev/run/28a325ff-64e2-404e-a65f-6da492062e74)

HTML

<a href="https://zambo.dev/run/28a325ff-64e2-404e-a65f-6da492062e74"><img src="https://zambo.dev/api/receipt/28a325ff-64e2-404e-a65f-6da492062e74/badge.svg" alt="Verifiable Zambo receipt"></a>

Open badge SVG

Recent verifiable receipts

33,222 verifiable receipts minted