{"name":"x402check","version":"0.3.2","description":"Pre-payment risk checks for x402 agent commerce and wallets: deterministic OFAC SDN address screening and domain-impersonation analysis, provider-observed on-chain facts, and a Jev typed-model evaluation of the operation content for injected or manipulated intent. Every verdict is an ES256 attestation that states which checks the provider actually ran.","endpoint":"/v1/risk-check","batch_endpoint":"/v1/risk-check/batch","method":"POST","pricing":{"amount":"0.001","currency":"USDC","protocol":"x402","network":"eip155:8453","unit":"per evaluation ($0.002 on Solana); $0.005 when the request includes a transaction that is simulated; batch billed per item","amount_with_transaction":"0.005","networks":["eip155:8453","eip155:137","eip155:42161","eip155:43114","eip155:143","eip155:1329","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"]},"signals":["ofac_sdn_address","threat_feeds","domain_impersonation","onchain_activity","transaction_simulation","contract_verification","drainer_code_fingerprint","operation_context_intent"],"chains_supported":["eip155:1","eip155:8453","eip155:137","eip155:42161","eip155:10","eip155:43114","eip155:56","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"response_time_ms":"<3000","attestation":{"jwks_url":"https://x402check.xyz/.well-known/jwks.json","algorithm":"ES256","kid":"jev-attest-v1","ttl":"1h","issuer":"did:web:x402check.xyz","claims":["iss","sub","score","tier","iat","exp","jti","categories","input_hash","request_hash","checks","asserted","aud","payment","interaction"]},"data_sources":{"ofac_sdn":"https://sanctionslistservice.ofac.treas.gov/api/PublicationPreview/exports/SDN.XML (published 2026-09-29, 1056 digital currency addresses; direct listing only)","onchain":"public JSON-RPC: EVM eth_getCode/eth_getTransactionCount/eth_getBalance; Solana getAccountInfo/getSignaturesForAddress","simulation":"eth_simulateV1 with traceTransfers on public RPCs with fallbacks (Ethereum, Base, Polygon, Arbitrum, Optimism, BSC)","contract_verification":"Blockscout API v2 (source verification status)","drainer_code_fingerprints":"sha256 of metadata-stripped logic code of contracts listed by Forta labelled-datasets (MIT) and ScamSniffer; token, NFT, proxy and tiny code is never fingerprinted","model":"TypeSafe Jev System One, question set jev-wallet-risk/v6"}}