{"uid":"cap_6u_vN2d4KVRf2XFFLIqPA","slug":"signalharness-merkle-proof-verifier-989eaf79","name":"SignalHarness Merkle Proof Verifier","description":"Explore 330 pay-per-call x402 API services and 27 agent-native digital products, with Base USDC pricing, secure Polar checkout, and free discovery.","url":"https://signalharness.ai/api/agent/services/merkle_proof_verify/invoke","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"merkle_proof_request":{"type":"string","maxLength":65536,"minLength":2}}},"responseSchema":{"type":"json","example":{"replay":false,"result":{"warnings":["Proof validity does not authenticate the meaning of the leaf."],"service_id":"merkle_proof_verify","evidence_scope":"caller_supplied_data","merkle_proof_verification":"{\"computed_root\":\"0x71d8979cbfae9b197a4fbcc7d387b1fae9560e2f284d30b4e90c80f6bc074f57\",\"expected_root\":\"0x71d8979cbfae9b197a4fbcc7d387b1fae9560e2f284d30b4e90c80f6bc074f57\",\"sorted_pairs\":true,\"valid\":true}"},"status":"succeeded","receipt":{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","usage":[],"status":"succeeded","network":"eip155:8453","artifacts":[],"endedAtMs":0,"latencyMs":0,"paymentId":"example-payment","receiptId":"example-receipt","requestId":"example-request","serviceId":"merkle_proof_verify","executionId":"example-execution","startedAtMs":0,"amountAtomic":"10000","resultSha256":"3e3976e3b41746abaeac3bddf91a64cdd61ea9aaba49f5dc6471e94c2086f3a4","serviceVersion":"1.0.0","settlementReference":"0x0000000000000000000000000000000000000000000000000000000000000000"},"artifacts":[],"requestId":"example-request","executionId":"example-execution"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_tmmJO2q1pRlkXDs3p3JtC","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies a caller-supplied Merkle proof and returns a cryptographic verification result with evidence scope and warnings","exampleAgentPrompt":"Can you verify this Merkle proof for me and tell me if it's valid? Here's the proof data: {base64-encoded or JSON Merkle proof string}.","exampleUseCases":[{"title":"Blockchain transaction inclusion check","prompt":"I have a Merkle proof that supposedly shows a transaction is included in a block — can you verify it and tell me if it checks out?"},{"title":"Data integrity audit for file archive","prompt":"We have a Merkle proof that a specific file was part of a dataset snapshot. Can you validate this proof and let me know if there are any warnings about it?"},{"title":"Smart contract event proof verification","prompt":"I received a Merkle inclusion proof for a smart contract event and I need to confirm it's legitimate before proceeding — can you run it through verification and give me the result?"}],"resultDescription":"Returns a JSON object with a verification status ('succeeded'), a result object containing the merkle_proof_verification outcome, evidence_scope ('caller_supplied_data'), and any warnings, plus a full receipt with payment ID, request ID, execution ID, latency, and a SHA-256 hash of the result for auditability.","failureModes":["Invalid or malformed Merkle proof string causes verification failure","Proof string exceeds 65536 character limit, rejected by schema","Proof string is too short (under 2 characters), rejected by schema","Payment not received or insufficient USDC, returns 402","Network or execution timeout results in non-succeeded status"],"whenToPreferThis":"Use this endpoint when you need a lightweight, pay-per-call cryptographic Merkle proof verification service that returns structured results with auditability receipts. It is especially useful for agent-driven workflows that need to verify blockchain or dataset inclusion proofs on demand without running a full node or maintaining local cryptographic infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T19:01:48.552Z","isFirstParty":false}