{"uid":"cap_P8aZ1ZtTp4U_7xNFkTKDV","slug":"library-forgemesh-io-qh-natural-history-shelf-04b83878","name":"library.forgemesh.io QH Natural History Shelf","description":"Curated shelf: QH — 614 public-domain books including Life and Letters of Charles Darwin — Volume 1, More Letters of Charles Darwin — Volume 1 A Record of His Work in a Series of Hitherto Unpublished Letters, The Natural History of Pliny, Volume 3 (of 6). Returns a ranked list with drill-down routes for full-text retrieval. No license, no API key required.","url":"https://library.forgemesh.io/qh","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"limit":{"type":"integer","description":"Max books to return (default 20, max 50)"}}},"responseSchema":{"type":"json","example":{"books":[{"year":null,"title":"Life and Letters of Charles Darwin — Volume 1","author":"Darwin, Charles","book_id":2087,"subjects":[],"download_count":30219}],"count":5,"shelf":"QH","coverage":{"target":61015,"indexed":61015},"drill_down":["/book-metadata","/book-chapter","/book-quotes","/literature-search"]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Pxtxi-8FgStAhzA5DJWY3","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a ranked list of up to 50 public-domain natural history books from the QH Library of Congress classification, with drill-down routes for full-text retrieval.","exampleAgentPrompt":"Show me up to 30 public-domain natural history books from the QH shelf, including things like Darwin's letters and Pliny's Natural History, so I can pick one to read in full.","exampleUseCases":[{"title":"Researching Darwin's correspondence","prompt":"Pull up to 20 books from the QH natural history shelf — I'm specifically looking for Charles Darwin's letters and correspondence available in the public domain."},{"title":"Building a reading list of classic naturalism","prompt":"Give me the top 50 public-domain books from the natural history QH shelf so I can put together a reading list of classic naturalism texts."},{"title":"Finding Pliny's Natural History for citation","prompt":"Can you fetch the QH shelf and tell me which volumes of Pliny's Natural History are available there as public-domain texts, with links to read the full text?"}],"resultDescription":"A ranked list of up to 50 public-domain books in the QH (natural history) classification, including titles, authors, and drill-down routes that can be used to retrieve the full text of each book.","failureModes":["limit parameter exceeds 50 — clamped or rejected","no books returned if shelf index is temporarily unavailable","payment not processed — 402 response requiring x402 payment before results are served","malformed request body returns validation error"],"whenToPreferThis":"Choose this endpoint when you need a curated, ranked list of public-domain natural history books (Library of Congress QH class) including Darwin's works and Pliny, and want drill-down routes for full-text access. Prefer it over full-text search when you want to browse the shelf by category rather than query by keyword.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T19:01:50.167Z","isFirstParty":false}