{"uid":"cap_zycZNO7nnnjm9xOaUVuzD","slug":"project-gutenberg-books-by-language-4d258e98","name":"Project Gutenberg Books by Language","description":"List Project Gutenberg public-domain ebooks in a given ISO language code {q} (e.g. fr, de), with authors. Query: ?q= Returns JSON.","url":"https://clonecho.builda.company/x402/s/gutendex-by-language","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_XdcLK_I-lb8wpvISBBBVk","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Lists public-domain ebooks from Project Gutenberg filtered by ISO language code, returning titles and authors as JSON.","exampleAgentPrompt":"Can you give me a list of public-domain books available in French on Project Gutenberg, along with their authors?","exampleUseCases":null,"resultDescription":"A JSON array of public-domain ebook records from Project Gutenberg matching the given ISO language code, each including book title, author(s), and associated metadata.","failureModes":["Invalid or unsupported ISO language code returns empty results or error","Missing required 'q' query parameter causes a bad request response","Language code with no Gutenberg holdings returns empty list","Network timeout or upstream Gutendex API unavailability causes failure","Malformed language code (e.g. full language name instead of ISO code) returns no results"],"whenToPreferThis":"Use this endpoint when you need to browse or list public-domain books from Project Gutenberg filtered specifically by language using an ISO 639-1 code. Prefer it over the title/author search endpoint when the goal is language-based discovery rather than keyword search.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:21:57.038Z","isFirstParty":false}