Pay-per-call API gateway for AI agents (x402 v2, USDC on Base & Solana, no signup/API key, from $0.002/call). Korean company/KYB, DART & SEC filings, Korean law, US regulations (eCFR), real estate, trade & macro (BOK, US BLS/Treasury), OFAC sanctions & KYB, OSV vulnerabilities (incl. batch), onchain Base/Solana token risk, prices & smart-money flows, crypto market data (Hyperliquid candles/orderbook/markets/liquidations, cross-venue funding, stablecoins, crypto pulse, spot ETF via SEC EDGAR), web read/search/render/OCR, x402 tooling.