{"uid":"cap_nw60vmlOkERZ_TMj-QFle","slug":"clinkagent-pdf-question-answering-cad3f35d","name":"ClinKAgent PDF Question Answering","description":"Ask a question about any public PDF and get a cited answer - pass a PDF URL and a plain-language question; returns the answer, confidence, verbatim supporting quotes with page numbers, or not_found. PDF question answering, document QA, read a filing/paper/manual/contract for me, extract a fact from a PDF. Text-based PDFs up to 25MB (no OCR). Full text instead: /pdf/text $0.01.","url":"https://clinkagent.com/pdf/answer?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","description":"Public http(s) URL of a PDF file"},"question":{"type":"string","description":"3-500 char plain-language question about the document"}}},"responseSchema":{"type":"json","example":{"answer":"...","citations":[{"page":3,"quote":"..."}],"not_found":false,"confidence":"high"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_9v-4iCWQ1kPFlO1JseT_8","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Answers a plain-language question about any public PDF by returning a cited answer with verbatim supporting quotes and page numbers, or 'not_found' if the answer isn't present.","exampleAgentPrompt":"Read this SEC 10-K filing at https://example.com/annual-report.pdf and tell me what the company reported as its total revenue for fiscal year 2023 — I need the exact quote and page number.","exampleUseCases":[{"title":"Extract clause from legal contract","prompt":"I have a lease agreement at https://example.com/lease.pdf — can you find what it says about early termination penalties and give me the exact quote with the page number?"},{"title":"Look up stat in research paper","prompt":"Check this academic paper at https://arxiv.org/pdf/2301.00001.pdf and tell me what sample size they used in the main study — quote the relevant sentence and tell me where it appears."},{"title":"Answer question from government filing","prompt":"Pull up this FDA guidance document at https://fda.gov/files/guidance.pdf and tell me what it says about the required labeling format for dietary supplements, with a cited quote."}],"resultDescription":"Returns the answer to the question derived from the PDF content, a confidence level, one or more verbatim supporting quotes with their page numbers, or a 'not_found' response if the document does not contain information relevant to the question. Works only on text-based PDFs up to 25MB (no OCR support).","failureModes":["PDF is scanned/image-based and cannot be read without OCR — returns not_found or error","PDF URL is not publicly accessible or requires authentication","PDF exceeds 25MB file size limit","Question is fewer than 3 or more than 500 characters","Answer genuinely not present in the document — returns not_found","PDF is malformed or not a valid PDF file","Network timeout fetching the remote PDF"],"whenToPreferThis":"Choose this endpoint when you need a specific question answered from a public PDF with cited evidence (quotes + page numbers), rather than extracting the full text. It is more cost-effective and targeted than full-text extraction when you only need one or a few facts. Prefer it for SEC filings, research papers, contracts, manuals, and policy documents where cited, verifiable answers matter. Use the sibling /pdf/text endpoint instead when you need the complete document text.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T00:46:12.507Z","isFirstParty":false,"canonicalSlug":"clinkagent-pdf-question-answering-cad3f35d"}