Agent Transaction Trust

Authorize an AI-agent payment under a predelegated spending policy before funds move. Verify that the merchant's exact x402 challenge, amount, payer, payee and HTTP request are within authority already delegated to the agent. No synchronous human approval is required when the predelegated policy permits the purchase. Includes signed authorization plus post-payment on-chain settlement verification

Public, account-free preflight for an autonomous x402 payment. Validates the merchant's exact PAYMENT-REQUIRED challenge against the intended request, checks Base USDC payment integrity and public merchant/payTo risk evidence, and returns APPROVED, REVIEW or DENIED with signed proof. It does not grant spending authority: an APPROVED result means the transaction evidence is clear enough to proceed

Decide whether an autonomous agent both can and should execute an exact x402 payment. Verifies predelegated spending authority, challenge/request integrity, and public merchant transaction-risk signals, then returns an evidence-based APPROVED, REVIEW or DENIED clearance plus a signed clearance token. APPROVED means the agent may proceed autonomously; REVIEW means do not auto-pay until higher-level

Automatic before-payment firewall for x402 clients. Runs after the merchant returns PAYMENT-REQUIRED but before the wallet creates/signs the merchant payment. Returns ALLOW, REVIEW or BLOCK based on exact request/challenge integrity and public merchant/payTo risk evidence. Spending authority remains with the caller's wallet/client policy unless full transaction clearance is used.

Pre-trade token transaction verdict for autonomous agents on Base. Submit a token contract address and receive signed ALLOW, WARN or BLOCK evidence based on token security and trading-risk signals. Designed for agents deciding whether to buy, swap or interact with an unfamiliar token.