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Polygon Contract Creation Transaction Analyzer
x402
Polygon Contract Creation Transaction Analyzer is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.015/call, status unknown (last checked 2026-09-15).
Analyzes Polygon contract creation transactions from caller-supplied data to extract creator address, nonce, init code details, expected address, and network context
Price / call$0.015
Success—
StatusUnknown
How this service works
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Output
Returns a JSON analysis containing: creator address, expected contract address (if derivable), gas limit, init code byte size and hash, nonce, value, network context (chain IDs, bridge model, protocol family), and an array of warnings about limitations of the analysis (e.g. no runtime behavior proven). Also includes evidence scope (caller_supplied_data), analyzed network (polygon), and a receipt with payment and execution metadata.
Example use cases
Pre-deployment address prediction
“I'm about to deploy a smart contract on Polygon and want to know the expected contract address before I actually send the transaction — can you analyze this contract creation tx JSON and give me the expected address, creator, and nonce used?”
Incident investigation of contract origin
“I need to trace a suspicious contract on Polygon back to its origin — analyze this contract creation transaction data and tell me the creator address, init code hash, and any warnings about the deployment.”
Audit of smart contract init code
“I'm auditing a Polygon contract deployment for a client — please analyze this transaction JSON and extract the init code size, init code hash, gas limit, and any issues flagged, so I can include them in my report.”
Technical details
Endpoint
POSThttps://signalharness.ai/api/agent/services/polygon_contract_creation_analyze/invokeWhen to prefer
Choose this endpoint when you need to statically analyze a Polygon contract creation transaction from caller-supplied data — particularly to extract the creator address, compute the expected deployed address, inspect init code metadata, or understand the Polygon PoS network context. It operates entirely on supplied data without requiring blockchain node access or live chain state, making it ideal for pre-deployment validation, audit workflows, and forensic analysis. Prefer alternatives if you need live on-chain verification, runtime behavior analysis, or support for non-Polygon EVM chains.
Side effects
- Malformed or missing request_json returns a parsing error
- Insufficient transaction fields prevent expected address derivation, surfaced as a warning rather than a hard failure
- Non-Polygon chain IDs in the transaction data may trigger warnings or incorrect network context
- Empty init code produces zero byte size and null hash
- Missing creator address or nonce prevents expected contract address calculation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| request_json | string |
Output
Schema · Response
{
"type": "json",
"example": {
"replay": false,
"result": {
"warnings": [
"Does not prove deployment or runtime behavior."
],
"service_id": "polygon_contract_creation_analyze",
"analysis_json": "{\"creator\":\"0x0000000000000000000000000000000000000001\",\"expected_address\":null,\"gas_limit\":\"21000\",\"init_code_bytes\":68,\"init_code_hash\":\"0x53893ee34a7f44a17cb623aa779750e71b27d6a76064cb515b6c5c42a4a973f7\",\"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\"},\"nonce\":\"1\",\"value\":\"0\",\"warnings\":[\"expected address requires a supplied creator and nonce derivation\"]}",
"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_contract_creation_analyze",
"executionId": "example-execution",
"startedAtMs": 0,
"amountAtomic": "15000",
"resultSha256": "1ca5b93c72948e22303ad3fcda5ede8fb90cbec14fdec0872c881b4624b9b79d",
"serviceVersion": "1.0.0",
"settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"artifacts": [],
"requestId": "example-request",
"executionId": "example-execution"
}
}Tags
x402
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