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Polygon State Sync Record Matcher
x402
Polygon State Sync Record Matcher is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).
Matches and analyzes Polygon PoS state sync records between L1 and L2 layers using caller-supplied evidence data.
Price / call$0.02
Success—
StatusUnknown
How this service works
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Output
Returns a structured analysis JSON containing matched record pairs with per-field match results (receiver, data), a list of unmatched L2 records, and network context (accepted chain IDs, bridge model, completion policy, protocol family). Also includes a service ID, status, evidence scope label, and a warning that the result does not prove canonical inclusion or finality.
Example use cases
Bridge relay integrity audit
“I need to audit whether this batch of Polygon state sync records from Ethereum L1 actually got relayed correctly to Polygon L2 — here's the evidence JSON with the receiver addresses and data payloads for state IDs 1 through 5 on chain 137. Please run the match analysis and tell me if anything is unmatched.”
Cross-chain debugging for stuck transaction
“My Polygon bridge transaction seems stuck — can you compare my L1 state sync record against the L2 record I have here? The receiver is 0xAbCd...1234, the data is 0xdeadbeef, and it should be on Polygon mainnet. I want to know if the fields actually match or where they diverge.”
Testnet state sync validation
“I'm testing a cross-chain integration on Polygon Amoy testnet (chain ID 80002) and want to confirm my state sync records are consistent between L1 and L2 before going to mainnet. Here's the evidence JSON with two record pairs — can you tell me if they match and flag any warnings?”
Technical details
Endpoint
POSThttps://signalharness.ai/api/agent/services/polygon_state_sync_record_match/invokeWhen to prefer
Use this endpoint when you need to programmatically compare Polygon PoS L1 state sync records against L2 records using your own supplied evidence, and want structured field-level match analysis. Prefer this over on-chain RPC queries when you already have the state sync data in hand and need a cheap, fast match result without setting up blockchain infrastructure. Note it does not prove finality — use it for evidence comparison, not as a definitive bridge proof.
Side effects
- Malformed or invalid request_json causes parsing failure
- Caller-supplied evidence is incomplete or missing required fields, resulting in no matches
- Chain ID not in accepted list (137 or 80002) may cause rejection
- Large payloads exceeding 65536 characters are rejected
- Result carries warning that canonical inclusion or finality is not proven
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| request_json | string |
Output
Schema · Response
{
"type": "json",
"example": {
"replay": false,
"result": {
"warnings": [
"Does not prove canonical inclusion or finality."
],
"service_id": "polygon_state_sync_record_match",
"analysis_json": "{\"matches\":[{\"fields\":[{\"field\":\"receiver\",\"left\":\"0x0000000000000000000000000000000000000002\",\"match\":true,\"right\":\"0x0000000000000000000000000000000000000002\"},{\"field\":\"data\",\"left\":\"0x01\",\"match\":true,\"right\":\"0x01\"}],\"l1_index\":0,\"l2_index\":0,\"match\":true,\"state_id\":\"1\"}],\"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_l2\":[]}",
"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_state_sync_record_match",
"executionId": "example-execution",
"startedAtMs": 0,
"amountAtomic": "20000",
"resultSha256": "9b6a1830d2819bc719e7369388d5ef04f37cc6bcf98ba937b582d27fa42f6279",
"serviceVersion": "1.0.0",
"settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"artifacts": [],
"requestId": "example-request",
"executionId": "example-execution"
}
}Tags
x402
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