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Polygon Bridge Event Correlate
x402
Polygon Bridge Event Correlate is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.025/call, status unknown (last checked 2026-09-15).
Correlates Polygon PoS bridge events (root/child chain) by matching caller-supplied evidence such as transaction IDs and amounts to determine bridge completion status.
Price / call$0.025
Success—
StatusUnknown
How this service works
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Output
Returns a JSON analysis object containing: a list of matched root-child bridge event pairs with supporting evidence fields (e.g. id, amount_atomic) and any conflicts; a list of unmatched child events; a boolean indicating whether completion is claimed; network context including accepted chain IDs, bridge model description, and completion policy; plus a warnings array noting that results are deterministic evidence matching, not a finality oracle.
Example use cases
Verify stuck Polygon bridge transfer
“My Polygon PoS bridge transfer seems stuck — can you check if root chain event index 0 with transaction ID 0xabc123 and amount 5000000 atomic correlates to child chain event index 0 on chain 137?”
Detect conflicting bridge event evidence
“I have two sets of Polygon bridge event logs and I want to know if there are any conflicts or mismatches between the root deposit and child withdrawal — can you run a correlation on them for chain IDs 1 and 137?”
Audit cross-chain bridge completion for DeFi app
“For our DeFi audit, can you analyze these Polygon PoS bridge events and tell me which root events have matching child events, which are unmatched, and whether completion can be claimed based on the supplied evidence?”
Technical details
Endpoint
POSThttps://signalharness.ai/api/agent/services/polygon_bridge_event_correlate/invokeWhen to prefer
Choose this endpoint when you need deterministic, evidence-based correlation of Polygon PoS bridge events between root and child chains — particularly when you have raw event data (transaction IDs, atomic amounts) and need to programmatically verify matching without relying on a third-party finality oracle. It is ideal for DeFi agents, bridge monitoring systems, or audit tools targeting Polygon mainnet (137) or Amoy testnet (80002) that need structured match/conflict analysis rather than a simple boolean status check.
Side effects
- Malformed or missing request_json input causes a validation error
- Unsupported chain IDs (not 137 or 80002) result in an error or empty analysis
- Incomplete event data with missing ID or amount fields may produce unmatched results rather than matches
- No evidence supplied for completion means completion_claimed will always be false
- Large payloads approaching the 65536-character limit may be rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| request_json | string |
Output
Schema · Response
{
"type": "json",
"example": {
"replay": false,
"result": {
"warnings": [
"Correlation is deterministic evidence matching, not a finality oracle."
],
"service_id": "polygon_bridge_event_correlate",
"analysis_json": "{\"completion_claimed\":false,\"matches\":[{\"child_index\":0,\"conflicts\":[],\"evidence\":[\"id\",\"amount_atomic\"],\"root_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\"},\"unmatched_child\":[]}",
"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_bridge_event_correlate",
"executionId": "example-execution",
"startedAtMs": 0,
"amountAtomic": "25000",
"resultSha256": "475ac4c39646666364b1487cb49f320b5f79481d73c1bd2a5270080ad388424c",
"serviceVersion": "1.0.0",
"settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"artifacts": [],
"requestId": "example-request",
"executionId": "example-execution"
}
}Tags
x402
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