MachineMint EVM Base Preflight Transaction Checker

API ↗

MachineMint EVM Base Preflight Transaction Checker is a paid API for AI agents from machinemint-native-x402-production.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).

Simulates and audits an unsigned Base mainnet transaction — estimating gas, checking balances and bytecode, decoding token transfers/approvals, and returning a PASS/REVIEW/FAIL verdict — without ever signing or broadcasting.

How this service works

Check an unsigned Base mainnet transaction before signing or broadcasting. Simulates with eth_call, estimates gas, checks sender balance and target bytecode, decodes supported token transfers and approvals, flags unlimited approvals and suspicious transaction shapes, and returns PASS, REVIEW, or FAIL. Never signs or broadcasts.

Output

A JSON object containing a top-level verdict of PASS, REVIEW, or FAIL, along with reason_codes explaining the decision, a simulation result (eth_call outcome), gas estimate, sender balance and nonce info, target address bytecode classification, decoded token action (e.g. transfer or approval with amount and recipient), and a list of risk flags such as unlimited approvals or suspicious calldata shapes. Also includes chain metadata and a provenance object identifying the service.