x402 Agent Wallet Tools: Eip712 Signature Risk Decoder

Overview

Decode EIP-712 signing risk fields, permit families, domain pins, and review checklist. receipt-gate-policy first: a $0.001 x402 receipt gate route for agent payment enforcement, followed by wallet signing safety, EIP-712, ERC20 allowance, Permit2, transaction simulation, spend guard, and private-key boundary tools. Buyers can download the route-specific first-payment client at https://x402-wallet.558686.xyz/x402/route/eip712-signature-risk-decoder/first-payment-client.mjs, run node first-payment-client.mjs for quote-only checks, then opt into a buyer-owned x402 payment with PAY_REAL_X402=1. Generic clients can also discover it from the live 402 response headers: X-First-Payment-Client and Link rel=payment-client.

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