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Polygon Transaction Forensic Report
x402
Polygon Transaction Forensic Report is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-13).
Performs a forensic analysis of a Polygon network transaction, cross-checking identity fields, execution details, fees, complexity, and evidence gaps between the transaction and its receipt.
Price / call$0.03
Success—
StatusUnknown
How this service works
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Output
Returns a structured JSON forensic report including: execution status and success flag, gas used and fee breakdown, identity consistency checks across hash/from/to/type/chain_id fields between transaction and receipt, complexity band and score with counts of calls, inner transactions, logs, and instructions, a list of evidence gaps (e.g. authenticity not verified, finality not verified), network context with accepted chain IDs, and a list of forensic warnings about what the report does and does not prove.
Example use cases
Compliance audit of a Polygon payment
“I need to audit a Polygon transaction for a compliance report — can you run a forensic check on this tx hash and receipt JSON and flag any inconsistencies between the transaction and receipt fields, and note any finality or authenticity gaps?”
Post-mortem on a failed bridge transaction
“A user claims their Polygon bridge transfer succeeded but the funds never arrived — can you run a forensic analysis on this transaction JSON and tell me the execution status, log count, complexity, and any evidence gaps that might explain the discrepancy?”
Smart contract interaction investigation
“We think a smart contract call on Polygon may have behaved unexpectedly — please analyze this transaction JSON for internal calls, instruction counts, log events, and any complexity flags that could indicate something went wrong during execution.”
Technical details
Endpoint
POSThttps://signalharness.ai/api/agent/services/polygon_transaction_forensic_report/invokeWhen to prefer
Choose this endpoint when you need a structured, agent-readable forensic breakdown of a Polygon transaction — especially when you need to cross-check consistency between a transaction and its receipt, assess execution complexity, or enumerate evidence gaps for compliance, audit, or investigation purposes. Prefer this over generic block explorers when you need machine-readable output with explicit consistency checks and evidence gap labeling.
Side effects
- Invalid or malformed request_json returns a parsing error
- Unknown or unsupported transaction hash results in empty or error response
- Missing receipt data causes evidence gaps like authenticity_not_verified and finality_not_verified to be reported
- Chain ID mismatch (non-Polygon network) may cause identity check failures
- Truncated or incomplete transaction data leads to partial analysis with additional warnings
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| request_json | string |
Output
Schema · Response
{
"type": "json",
"example": {
"replay": false,
"result": {
"warnings": [
"Does not prove finality, authenticity, bridge completion, or contract safety."
],
"service_id": "polygon_transaction_forensic_report",
"analysis_json": "{\"complexity\":{\"band\":\"low\",\"counts\":{\"calls\":0,\"inner\":0,\"instructions\":0,\"keys\":0,\"logs\":1},\"interpretation\":\"structural_complexity_only\",\"network\":\"polygon\",\"score\":2},\"evidence_gaps\":[\"authenticity_not_verified\",\"finality_not_verified\",\"calls_not_supplied\"],\"execution\":{\"contract_address\":null,\"effective_gas_price\":\"105\",\"execution_fee\":\"2205000\",\"gas_used\":\"21000\",\"l1_fee\":\"0\",\"log_count\":1,\"status\":\"0x1\",\"successful\":true,\"total_supplied_fee\":\"2205000\",\"transaction_hash\":\"0x1111111111111111111111111111111111111111111111111111111111111111\",\"warnings\":[\"receipt authenticity and finality are not verified\"]},\"fees\":{\"execution_fee\":\"2205000\",\"l1_fee\":\"0\",\"total_supplied_fee\":\"2205000\"},\"identity\":{\"checks\":[{\"field\":\"hash\",\"match\":true,\"receipt\":\"0x1111111111111111111111111111111111111111111111111111111111111111\",\"transaction\":\"0x1111111111111111111111111111111111111111111111111111111111111111\"},{\"field\":\"transaction_hash\",\"match\":true,\"receipt\":\"0x1111111111111111111111111111111111111111111111111111111111111111\",\"transaction\":\"0x1111111111111111111111111111111111111111111111111111111111111111\"},{\"field\":\"from\",\"match\":true,\"receipt\":\"0x0000000000000000000000000000000000000001\",\"transaction\":\"0x0000000000000000000000000000000000000001\"},{\"field\":\"to\",\"match\":true,\"receipt\":\"0x0000000000000000000000000000000000000002\",\"transaction\":\"0x0000000000000000000000000000000000000002\"},{\"field\":\"type\",\"match\":true,\"receipt\":\"0x2\",\"transaction\":\"0x2\"},{\"field\":\"chain_id\",\"match\":true,\"receipt\":\"137\",\"transaction\":\"137\"}],\"consistent\":true},\"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_transaction_forensic_report",
"executionId": "example-execution",
"startedAtMs": 0,
"amountAtomic": "30000",
"resultSha256": "79d07600d21cab843fc0a56b804de0ef66857cf5b7fab470eceee7657f05256a",
"serviceVersion": "1.0.0",
"settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"artifacts": [],
"requestId": "example-request",
"executionId": "example-execution"
}
}Tags
x402
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