{"uid":"cap_FE_ZJThvsyuX_JkDPGbKw","slug":"polygon-event-sequence-analyzer-8433a175","name":"Polygon Event Sequence Analyzer","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/polygon_event_sequence_analyze/invoke","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"request_json":{"type":"string","maxLength":65536,"minLength":2}}},"responseSchema":{"type":"json","example":{"replay":false,"result":{"warnings":["Ordering depends on supplied indexes."],"service_id":"polygon_event_sequence_analyze","analysis_json":"{\"ambiguous_order\":false,\"count\":1,\"events\":[{\"_source_index\":0,\"address\":\"0x0000000000000000000000000000000000000001\",\"block_number\":1,\"chain\":\"137\",\"log_index\":0,\"transaction_index\":0}],\"network_context\":{\"accepted_chain_ids\":[\"137\",\"80002\"],\"bridge_model\":\"root-child state sync plus checkpoint evidence\",\"completion_policy\":\"never inferred without supplied evidence\",\"protocol_family\":\"Polygon PoS\"}}","evidence_scope":"caller_supplied_data","analyzed_network":"polygon"},"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":"polygon_event_sequence_analyze","executionId":"example-execution","startedAtMs":0,"amountAtomic":"15000","resultSha256":"6d330a8c3eb84f1f9c1efa0e8f9b218582f8492f382e3b9090c03d3b226f55fb","serviceVersion":"1.0.0","settlementReference":"0x0000000000000000000000000000000000000000000000000000000000000000"},"artifacts":[],"requestId":"example-request","executionId":"example-execution"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.015","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":"$0.015/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.015","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.015","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_2QIqoZTS-56pgnuWQCzNm","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.015","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Analyzes and deterministically orders a supplied set of Polygon PoS blockchain events by block number, transaction index, and log index to detect ambiguous ordering.","exampleAgentPrompt":"I have a list of Polygon PoS smart contract events with their block numbers, transaction indexes, and log indexes — can you analyze whether they're in unambiguous chronological order and give me the sorted sequence?","exampleUseCases":[{"title":"DeFi protocol event audit","prompt":"I collected a series of swap and transfer events from a Polygon DeFi contract and I need to know if they're in the correct on-chain sequence — can you analyze these events and flag any ordering ambiguity?"},{"title":"Bridge state sync verification","prompt":"We're verifying a Polygon root-child bridge state sync and have a batch of events from chain ID 137 — can you check whether the event sequence is unambiguous and give me the sorted order with any warnings?"},{"title":"NFT mint order dispute resolution","prompt":"Two NFT mints happened in the same block on Polygon and a buyer is disputing which came first — I have the block number, transaction index, and log index for both events, can you determine the definitive sequence?"}],"resultDescription":"Returns a JSON analysis containing the ordered list of events with their source indexes, an ambiguous_order boolean flag, total event count, network context (accepted chain IDs, bridge model, completion policy, protocol family), and any warnings about index-dependent ordering. Also returns the analyzed network identifier and evidence scope.","failureModes":["Supplied event data missing required indexes (block_number, log_index, transaction_index) causing warnings or incorrect ordering","Events from unsupported chain IDs (only 137 and 80002 accepted) may fail validation","Malformed request_json string causing parse errors","Ambiguous ordering flagged when events share identical block, transaction, and log index values","Empty event array returning zero-count result with no sequence"],"whenToPreferThis":"Choose this endpoint when you need deterministic, rule-based sequencing of Polygon PoS blockchain events from caller-supplied data — without making live RPC calls to a node. Ideal when you already have raw event data and need to verify or sort it by canonical on-chain ordering (block → tx index → log index). Prefer this over generic blockchain indexers when you need explicit ordering ambiguity detection and network-context metadata for Polygon PoS or Amoy testnet (chain IDs 137 and 80002).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T07:02:41.680Z","isFirstParty":false}