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EVM Contract Creation Check
x402
EVM Contract Creation Check is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Determines whether a given EVM 'to' address field indicates a contract creation transaction (i.e., the 'to' field is null or absent).
Price / call$0.001
Success—
StatusUnknown
How this service works
EVM Contract Creation Check: EVM Contract Creation Check classifies an empty or absent to-address as contract creation from bounded caller-supplied values without an external provider. Call EVM Contract Creation Check before signing, submitting, replacing, or accepting an EVM/Base transaction assembled from caller-owned data. Returns normalized transaction evidence, calculated budget or shape findings, and a fail-closed preflight status for EVM Contract Creation Check as versioned deterministic…
Output
Returns a JSON object with a 'result' field containing the echoed 'to' value and a 'contract_creation' boolean, a status of 'pass', the operation name, and an evidence block confirming no data is retained and no external calls were made.
Example use cases
Pre-submission contract deployment detection
“Before I submit this EVM transaction, can you check whether the 'to' field being null means it's going to deploy a new smart contract?”
Transaction classifier for blockchain analytics
“I'm processing a batch of EVM transactions and need to flag which ones are contract creations — can you check if this transaction with to=null is a contract deployment?”
Agent preflight check before EVM execution
“Run a preflight check on this EVM transaction — the 'to' value is 0x1234abcd... — and tell me whether it's a contract creation or a regular call.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/evm-contract-creation-checkWhen to prefer
Use this endpoint when you need a lightweight, privacy-preserving check to determine if an EVM transaction's 'to' field signals a contract creation (null/absent) versus a regular contract call or transfer. Prefer this over custom logic when you want a governed, auditable result with evidence metadata confirming no data retention.
Side effects
- Invalid or malformed 'to' field value may cause unexpected classification
- Missing required 'to' field may result in a validation error or empty result
- Network timeout or API unavailability returns a non-200 error
- Addresses that are ambiguous or non-standard EVM format may be misclassified
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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