TxPreflight

Deterministic pre-sign transaction risk screening for autonomous agents and wallets on Base.

What it detects

• ERC20 transfers and token approvals
• Unlimited approvals and setApprovalForAll
• Uniswap Permit2 permissions and transfers
• OFAC SDN EVM address matches
• Malformed or unknown calldata
• Current-state EVM simulation before signing

Paid API

POST /risk-check is protected by x402 and returns ALLOW, REVIEW or BLOCK with structured reasons.

Machine-readable discovery: llms.txt, x402 manifest, transparency, security.txt.