{"uid":"cap_12gldwT0eoRGZIYf9bqxR","slug":"delx-commerce-citation-extractor-0e8e0389","name":"Delx Commerce Citation Extractor","description":"Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.","url":"https://commerce.delx.ai/api/v1/x402/citation-extract?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"text":{"type":"string","description":"UTF-8 text to encode, chunk, index, or analyze (caller-supplied only)."}}},"responseSchema":{"type":"json","example":{"dois":["10.1000/xyz123"],"urls":["https://example.com/a"],"schema":"delx/util-citation-extract/v1","advisory":"Pattern harvest only; links are not fetched.","doi_count":1,"url_count":1}},"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_cRomKEsHtNqjxGjO2WejZ","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":"Extracts DOI identifiers and URLs from arbitrary text using pattern matching, returning structured lists without fetching the links","exampleAgentPrompt":"Pull out all the DOIs and URLs from this text for me: 'Recent work (doi:10.1000/xyz123) builds on methods from https://example.com/paper and further references in doi:10.9999/abc456.'","exampleUseCases":[{"title":"Reference harvesting from research papers","prompt":"I've pasted in the body of a research paper — can you extract every DOI and URL mentioned in it so I can build a reference list?"},{"title":"Audit citations in a blog post","prompt":"Here's the text of a blog post I wrote. Find all the URLs I linked to so I can check they're still live."},{"title":"Bibliography parsing for literature review","prompt":"I have the bibliography section from three papers merged into one block of text. Pull out all the DOI identifiers so I can look them up in my reference manager."}],"resultDescription":"Returns a JSON object containing a list of extracted DOIs, a list of extracted URLs, counts for each, the schema version identifier 'delx/util-citation-extract/v1', and an advisory note clarifying that links are not fetched — only their patterns are matched from the input text.","failureModes":["Empty or whitespace-only text input returns zero DOIs and zero URLs with empty arrays","Malformed DOI patterns that deviate from standard formatting may not be detected","URLs without standard schemes (http/https) may be missed","Very large text bodies may hit payload size limits","Non-UTF-8 encoded text may cause parsing errors"],"whenToPreferThis":"Choose this endpoint when you need lightweight, pattern-based extraction of DOIs and URLs from text without any network fetching of those links. It is ideal for preprocessing academic papers, bibliographies, or documents to enumerate references cheaply ($0.003/call) and without signup. Prefer alternatives if you need link validation, full-text retrieval of cited pages, or semantic citation parsing beyond raw pattern matching.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:54:08.188Z","isFirstParty":false,"canonicalSlug":"delx-commerce-citation-extractor-0e8e0389"}