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Polygon Address Chain Validator
x402
Polygon Address Chain Validator is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Validates whether a given address is a valid Polygon network address for a specified chain ID (mainnet or testnet)
Price / call$0.005
Success—
StatusUnknown
How this service works
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Output
Returns a JSON object containing: the validated address, chain ID, network name (e.g. polygon_pos_mainnet), network context (accepted chain IDs, bridge model, completion policy, protocol family), a boolean 'valid' field, warnings (e.g. that validation does not prove ownership or account existence), and the evidence scope. Also includes a receipt with payment metadata, execution timing, and a result hash.
Example use cases
Pre-transfer address sanity check
“Before I send USDC to 0xAbC123...DEF456 on Polygon mainnet, can you confirm that address is valid for chain ID 137?”
DApp onboarding address verification
“A user just entered 0x1234567890abcdef1234567890abcdef12345678 as their Polygon wallet — validate it against Polygon PoS mainnet so I can proceed with onboarding.”
Testnet address check for dev environment
“I'm testing on Polygon Mumbai — can you check if 0xdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef is a valid address on chain ID 80002?”
Technical details
Endpoint
POSThttps://signalharness.ai/api/agent/services/polygon_address_chain_validate/invokeWhen to prefer
Use this endpoint when you need a lightweight, cost-effective check that a given address conforms to Polygon network address standards for mainnet (chain 137) or testnet (chain 80002). Prefer this over general EVM validators when you specifically need Polygon-aware network context, protocol family info, and bridge model details. Note: this validates address format and chain compatibility only — it does not verify ownership, contract existence, or account activity.
Side effects
- Invalid or malformed address format returns validation failure
- Unsupported chain ID returns error or undefined network context
- Malformed request_json input may return a parsing error
- Network unavailability may cause timeout or service error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| request_json | string |
Output
Schema · Response
{
"type": "json",
"example": {
"replay": false,
"result": {
"warnings": [
"Does not prove ownership, code, or account existence."
],
"service_id": "polygon_address_chain_validate",
"analysis_json": "{\"address\":\"0x0000000000000000000000000000000000000001\",\"chain_id\":\"137\",\"network\":\"polygon_pos_mainnet\",\"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\"},\"valid\":true}",
"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_address_chain_validate",
"executionId": "example-execution",
"startedAtMs": 0,
"amountAtomic": "5000",
"resultSha256": "82500ceccca712d7c113c1adcd6087ac40d944332f8549c2b50b768846c5f1ff",
"serviceVersion": "1.0.0",
"settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"artifacts": [],
"requestId": "example-request",
"executionId": "example-execution"
}
}Tags
x402
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