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EVM Transaction Risk Decoder
x402
EVM Transaction Risk Decoder is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Decodes and risk-scores EVM transaction calldata — including approvals, permits, transfers, and multicall — before a wallet or agent signs
Price / call$0.01
Success—
StatusUnknown
Output
Returns a decoded breakdown of the transaction calldata including the identified operation type (approval, transfer, permit, multicall), involved addresses, token amounts, risk flags, and human-readable warnings about potentially dangerous patterns — all before the transaction is submitted on-chain.
Example use cases
Example prompt
“Before I sign this transaction, decode and risk-check this calldata for me: 0x095ea7b3000000000000000000000000def1c0ded9bec7f1a1670819833240f027b25effffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff — the target contract is 0xdef1c0ded9bec7f1a1670819833240f027b25eff on Ethereum mainnet.”
Technical details
Endpoint
POSThttps://gpt55.558686.xyz/v1/paid/evm-transaction-risk-decoderWhen to prefer
Choose this endpoint when an AI agent or wallet needs to pre-screen an EVM transaction before signing — especially for decoding token approvals, permit signatures, and multicall payloads that are opaque as raw hex. Prefer this over generic ABI decoders when you need integrated risk signals alongside the decoding, or when operating in an automated agent pipeline that needs machine-readable risk output for a $0.01 USDC micropayment via x402.
Side effects
- Missing or malformed calldata returns a 400-level error
- Unrecognized function selector may result in partial or generic decoding
- Very long or deeply nested multicall payloads may exceed the 20000-character calldata limit
- Unsupported chain identifier returns an error or falls back to generic decoding
- Payment failure via x402 USDC on Base blocks the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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