# Mart402 > Web content extraction API built for AI agents. Pay per call with x402 (USDC on Base) — no account, no API key. ## Try it free - Sandbox with identical API on Base Sepolia (free test USDC): https://mart402.dev ## Docs - /agents.md: How to use this service as an agent - /catalog: Machine-readable product & pricing catalog (JSON) - /.well-known/ai-catalog.json: Discovery index - /stats: measured latency & success rate (last 30 days), independently verifiable at market402.com ## Products (all pay-per-call via x402, prices in /catalog) - POST /v1/extract: URL -> Markdown + metadata. JS rendering auto. ($0.002-0.006) - POST /v1/parse/quote -> /v1/parse: PDF -> structured Markdown. Free quote, then $0.004-0.012/page. Japanese-strong OCR routing. - POST /v1/verify: invoice field verification (tax math, JP registration check-digit, accounting JSON). ($0.001) - POST /v1/structured: fill YOUR JSON schema from any URL. Hybrid LLM + deterministic canonicalization. ($0.02) - POST /v1/jp-company: Japanese company site -> standard profile JSON. ($0.02)