{"service":"Book402","tagline":"The world's knowledge, one API call away","description":"AI-native book knowledge API. Search 3,807+ books via hybrid BM25+vector search. AI agents pay per query with USDC on Base via x402 — no API keys, no subscriptions.","version":"1.0.0","provider":{"name":"Feralbyte","url":"https://feralbyte.com"},"stats":{"total_books":3807,"books_with_summaries":3807},"endpoints":{"free":[{"method":"GET","path":"/stats","description":"Collection statistics"},{"method":"GET","path":"/genres","description":"List all genres with book counts"},{"method":"GET","path":"/books","description":"Browse all books (paginated)","params":"?q=&genre=&limit=&offset="},{"method":"GET","path":"/books/:id","description":"Get book metadata by ID"},{"method":"GET","path":"/discover","description":"This service catalog"},{"method":"GET","path":"/.well-known/agent.json","description":"A2A agent card"},{"method":"GET","path":"/.well-known/mcp.json","description":"MCP tool discovery"}],"paid":[{"method":"GET","path":"/search/hybrid?q=","description":"Hybrid BM25+vector search","price":"$0.01 USDC","example":"/search/hybrid?q=stoicism"},{"method":"GET","path":"/books/:id/summary","description":"Full book summary","price":"$0.05 USDC","example":"/books/42/summary"},{"method":"GET","path":"/search/summaries?q=","description":"Full-text search in summaries","price":"$0.02 USDC","example":"/search/summaries?q=compound+interest"}]},"payment":{"protocol":"x402","how_it_works":"1. Call a paid endpoint → get 402 with payment details. 2. Sign USDC transfer on Base. 3. Retry with payment header → get results.","network":"Base (Chain ID 8453)","currency":"USDC","wallet":"0x6B1925e4a1f779797eF51A18A4694B59FFb60Aba","facilitator":"Self-hosted (x402-rs)"},"links":{"homepage":"https://book402.com","docs":"https://docs.book402.com","github":"https://github.com/hugofreire/FeralGrind","x402_protocol":"https://x402.org","x402_scan":"https://www.x402scan.com"}}