{"uid":"cap_gX5F08CTPR_MCXrobBR-s","slug":"eip-712-signature-risk-decoder-get-0e556946","name":"EIP-712 Signature Risk Decoder (GET)","description":"","url":"https://gpt55.558686.xyz/v1/tools/eip712-signature-risk-decoder","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_j-voWd5xbF7_Bxdk1MDfn","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Inspects eth_signTypedData / EIP-712 payloads for security risks — spender fields, deadlines, unlimited allowances, nonces, chainId, verifyingContract — and returns risk flags and a wallet confirmation checklist without signing or sending anything.","exampleAgentPrompt":"Before I sign this EIP-712 message in my wallet, can you decode it and flag any risks — like unlimited allowances, suspicious spender addresses, or expired deadlines? Here's the typed data: {\"types\":{\"Permit\":[{\"name\":\"owner\",\"type\":\"address\"},{\"name\":\"spender\",\"type\":\"address\"},{\"name\":\"value\",\"type\":\"uint256\"},{\"name\":\"nonce\",\"type\":\"uint256\"},{\"name\":\"deadline\",\"type\":\"uint256\"}]},\"domain\":{\"name\":\"USD Coin\",\"chainId\":8453,\"verifyingContract\":\"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA0291\"},\"message\":{\"owner\":\"0xabc...\",\"spender\":\"0xdeadbeef...\",\"value\":\"115792089237316195423570985008687907853269984665640564039457584007913129639935\",\"nonce\":0,\"deadline\":9999999999}}.","exampleUseCases":null,"resultDescription":"A JSON object containing risk flags (e.g. unlimited allowance detected, deadline far in future, unknown spender, chainId mismatch, suspicious verifyingContract), a structured wallet confirmation checklist summarizing what the user is about to approve, and an overall risk assessment — all without producing a signature or calling any external chain RPC.","failureModes":["Malformed or unparseable typed data JSON returns a validation error","Missing required typed data input returns 400-level error","Unrecognized EIP-712 type structure may result in incomplete risk analysis","Chain ID not recognized may reduce quality of contract address context","Known_addresses map not provided means spender labels will be absent"],"whenToPreferThis":"Use this endpoint when a wallet, agent, or dApp needs a pre-signing safety check on an eth_signTypedData / EIP-712 payload — especially for ERC20 Permit, Permit2, transferWithAuthorization, or NFT operator approvals — without executing any transaction or connecting to a node. Prefer the GET variant when the client is a crawler, agent, or tool that handles query parameters more naturally than JSON request bodies.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-16T12:26:00.170Z","isFirstParty":false}