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Vextorium Contract Address Pre-computation (CREATE / CREATE2)
x402
Vextorium Contract Address Pre-computation (CREATE / CREATE2) is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-16).
Computes the deterministic Ethereum contract address before deployment using either CREATE (deployer + nonce) or CREATE2 (deployer + salt + init code hash).
Price / call$0.003
Success—
StatusUnknown
How this service works
Compute a contract address in advance: CREATE (deployer + nonce) or CREATE2 (deployer + salt + init code hash). For deterministic deployments and verifying announced addresses.
Output
Returns a JSON object with the computed contract address (Ethereum checksummed), the deployer address, the deployment method used (CREATE or CREATE2), and the nonce (if applicable).
Example use cases
Verify announced protocol contract address
“A DeFi protocol just announced their new vault contract will be at 0xABC... — can you verify that address is correct for deployer 0x6AC7EA33F8831EA9dcC53393aAA88B25A785DBF0 using CREATE2 with salt 0xdeadbeef and init code hash 0x1234abcd?”
Counterfactual deployment address lookup
“I'm setting up a counterfactual wallet — what address will be generated by CREATE2 if the deployer is 0x6AC7EA33F8831EA9dcC53393aAA88B25A785DBF0, the salt is 0xaabbccdd, and the init code hash is 0x9876fedc?”
Pre-fund contract before deployment
“I want to pre-fund a contract before it's deployed — can you tell me what address 0x6AC7EA33F8831EA9dcC53393aAA88B25A785DBF0 will deploy to next if they're at nonce 12, using the standard CREATE method?”
Technical details
Endpoint
POSThttps://api.vextorium.com/direccion-contrato-pago?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to deterministically predict or verify an EVM smart contract address before it is deployed — especially for CREATE2 counterfactual deployments, factory contract patterns, or validating addresses announced by protocols. Prefer this over on-chain lookups when the contract hasn't been deployed yet and you only have the deployer and salt/nonce.
Side effects
- Invalid or missing deployer address returns an error
- CREATE2 requires salt and init_code_hash; omitting either causes failure
- CREATE requires a valid nonce integer; missing nonce causes failure
- Malformed hex strings for salt or init_code_hash result in computation errors
- Unsupported deployment type specified
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| salt | string | |
| nonce | integer | |
| init_code | string | |
| desplegador | string | |
| init_code_hash | string |
Output
Schema · Response
{
"type": "json",
"example": {
"nonce": 0,
"metodo": "CREATE",
"direccion": "0xcd234A471b72ba2F1Ccf0A70FCABA648a5eeCD8d",
"desplegador": "0x6AC7EA33F8831EA9dcC53393aAA88B25A785DBF0"
}
}Tags
x402
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