{"uid":"cap_2zvhnNLU0flc-Un00-pRA","slug":"x402-books-search-api-b7db2a4a","name":"x402 Books Search API","description":"66 pay-per-call APIs: AI text/image generation ($0.01), Polymarket odds, crypto prices, DeFi yields, FX rates, weather, IP/geo, FBI wanted, SEC tickers, clinical trials, 250M academic papers, Stack Overflow, meme-coin launchpads (pump.fun, Clanker, Four.meme, SunPump), tokenized stocks, Solana top 100, and 40+ more. $0.005/call standard. USDC on Base and Solana via x402.","url":"https://workspace-x402-paywall.onrender.com/ref/books?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["q"],"properties":{"q":{"type":"string","description":"Requires a text search query string"}}}},"additionalProperties":false}}},"responseSchema":{"type":"object"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_4330M2NYLVdn14lBUEXXy","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Searches for books by query string and returns relevant book metadata, priced at $0.005 USDC per call via x402 micropayment","exampleAgentPrompt":"Search for books about machine learning and return the name and price for each result.","exampleUseCases":[{"title":"Research reading list by topic","prompt":"Find me books about quantum computing and show me their titles and prices."},{"title":"Book price discovery for purchasing","prompt":"Search for 'clean code' books and return just the name and price_usd fields so I can compare options."},{"title":"Catalog lookup for a specific title","prompt":"Look up books matching 'The Pragmatic Programmer' and give me all the details you can find."}],"resultDescription":"Returns a JSON object containing book records matching the search query, with fields such as name and price_usd depending on the fields parameter supplied. The response schema is open-ended and may include title, author, price, and other catalog metadata.","failureModes":["Missing required 'q' parameter returns an error","Empty query string may return zero results","Invalid field names in 'fields' parameter may be ignored or cause errors","Payment failure via x402 (insufficient USDC balance or wrong network) blocks the request","Service may be slow or unavailable on Render's free tier (cold starts)","Overly generic queries may return irrelevant or empty results"],"whenToPreferThis":"Use this endpoint when you need a pay-per-call, no-subscription book search with micropayment via USDC on Base or Solana. It is ideal for agents that need occasional book lookups without committing to a monthly API plan, and when you want to filter returned fields to keep responses lean.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T18:41:49.386Z","isFirstParty":false,"canonicalSlug":"x402-books-search-api-b7db2a4a"}