All projects on Base matching “sdn”

Pay Guard: pre-payment allow/warn/block check for x402. Send your planned purchase (domain, max_price_usd, asset/network) plus the 402 challenge (payTo, amount, asset, network, resource). Returns verdict with wallet↔domain verification, price/asset/network checks, lookalike/URL safety, wash flags from Agentropolis, and a free OFAC SDN sanctions screen of payTo (a screen, not a certificate). Determ

Counterparty check before paying a platform or crypto provider: French AMF blacklists, ESMA MiCA register (authorised and non-compliant CASPs), sanctions lists (EU, UN Security Council, US OFAC SDN). Official public data, refreshed daily.

OFAC SDN sanctions screen for a name / entity / wallet (?name=)

Screen a person or company name against OFAC SDN, EU consolidated, and UK sanctions lists. Returns matches with details and an audit receipt.

Crypto wallet screening: OFAC SDN sanctions check (refreshed daily) and a 0-100 risk score, with balances, activity and transaction-graph checks for EVM wallets.

ScreenSeal — sanctions screening: a name checked against the OFAC SDN and EU FSF lists. Informational signal, not legal advice.

Should I pay this x402 endpoint? Verdict pay/caution/block/cannot_pay with reasons: price vs your maxUsd and decoy prices, asset/network, payTo screened against OFAC SDN, Circle/Tether freezes and exploit/phishing/mixer labels, expected payTo, Bazaar track record, broken payment terms. Returns the payment option a standard client would sign.

Pre-transaction counterparty check for an EVM wallet or contract: OFAC SDN screening, GoPlus malicious-address flags (phishing, drainers, laundering, mixers ...), and a live on-chain profile (EOA / contract / EIP-7702, nonce, balance, ENS, first transaction, contract verification). Returns risk_level, a plain recommendation (do_not_transact / review_before_transacting / no_red_flags_found), every

Offline pre-sign check (no RPC, fast): decodes a transaction, EIP-712 typed data (Permit, Permit2, EIP-3009), an EIP-7702 authorization or an x402 402 + payment payload and returns SAFE/CAUTION/DANGER, every risk flag with its reason, decoded args, counterparties, x402 payment-vs-402 match and OFAC SDN screening. Use /v1/check for on-chain facts and simulation.

Screen a person, entity, vessel or aircraft name against the EU, UK, UN, OFAC (SDN and Consolidated), Swiss, Australian and Canadian sanctions lists, refreshed daily. Returns the matching sanctioned parties with match scores, programs, birth dates and list references, best match first; matches are name similarity and should be reviewed. No account, API key or subscription required; x402 clients ha