Paid services on Base matching “transaction-simulation”

Offline pre-sign check (no RPC, fast): decodes a transaction, EIP-712 typed data (Permit, Permit2, EIP-3009), an EIP-7702 authorization or an x402 402 + payment payload and returns SAFE/CAUTION/DANGER, every risk flag with its reason, decoded args, counterparties, x402 payment-vs-402 match and OFAC SDN screening. Use /v1/check for on-chain facts and simulation.

Parallel Solana risk advisors; flags do not prove safety. Select public aliases via GET /v1/advisors or omit for all. Price = advisor cost + max(US$ 0.005, 15% of advisor cost). Exact prepayment returns 202 charged:true, receipt and job_id/status_url. Poll for free; no second payment. Paid failures need review; no automatic refund. Replace :mint or {mint} with the actual mint. Templates are discov