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EVM Contract Creation Check
x402
EVM Contract Creation Check is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Determines whether a given EVM transaction `to` address indicates a contract creation (null/empty `to` field pattern)
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON object with a `contract_creation` boolean (true if the `to` field indicates a contract deployment), an echo of the input `to` value, a status field ('pass'), the operation name, and evidence metadata including whether input was retained (always false), its SHA-256 hash, and number of external calls made (always 0 — fully in-memory).
Example use cases
Pre-broadcast contract deployment detection
“I'm about to send an EVM transaction and the `to` field is null — can you confirm whether this means it's a contract creation transaction before I broadcast it?”
Transaction classifier in a DeFi automation pipeline
“For this batch of EVM transactions I'm processing, can you check if the one with a null `to` address is a contract deployment so I can route it differently in my workflow?”
Smart contract audit preflight check
“I'm auditing a set of on-chain transactions and need to flag any that are contract creations. Can you check whether this transaction with `to` set to null qualifies as a contract creation?”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/evm-contract-creation-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a cheap ($0.001), fast, stateless, verifiable check to determine EVM contract creation from a transaction's `to` field — especially in agent pipelines requiring no signup, deterministic pricing, and cryptographic evidence of non-retention. Prefer this over custom logic when you need audit-trail evidence that the check was done without data retention.
Side effects
- Invalid or oversized `to` field (exceeds 8192 chars) may result in a validation error
- Malformed JSON body returns a 400-level error
- Network or upstream availability issues may return 5xx responses
- Payment failure via x402 protocol (insufficient USDC balance) results in 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | To supplied to EVM Contract Creation Check; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"to": null,
"contract_creation": true
},
"schema": "delx/util-evm-contract-creation-check/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "a989634982a168f73ab3e76e8f148fee85c4dafaa08aaf66b14ecbe8df0a682c",
"external_calls": 0
},
"operation": "evm_preflight:evm_contract_creation_check"
}
}Tags
x402
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