{"uid":"cap_4kRlBUqSgTTJIKOnKau7k","slug":"one-engine-text-hashtag-extractor-3b54789d","name":"ONE Engine Text Hashtag Extractor","description":"Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.","url":"https://one-search.one-engine.workers.dev/v3/text-extract/hashtags/t1?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["text"],"properties":{"text":{"type":"string","description":"Text up to 50000 characters"}}},"responseSchema":{"type":"object","additionalProperties":true},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0005","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":"$0.0005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_s77596LmSDOeZV4WwqJMl","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Extracts all hashtags from a given text input, returning a structured list of discovered hashtag tokens.","exampleAgentPrompt":"Pull all the hashtags out of this Instagram caption for me: 'Loving the new season vibes! #autumn #fashion #OOTD #style2024 — can't believe how fast the year is going #blessed'","exampleUseCases":[{"title":"Social media analytics pipeline","prompt":"I have a dump of 500 tweet bodies and I need to extract every hashtag from each one so I can build a frequency chart of the most-used tags this week. Start with this one: 'Big news today! #AI #machinelearning #tech are reshaping everything we know. #futureofwork'"},{"title":"Content moderation tag review","prompt":"Can you pull out all the hashtags from this user-submitted post so I can check them against our banned-tag list? Here's the text: 'Join us tonight! #party #underground #nofilter #secretevent — don't tell anyone 😉'"},{"title":"SEO and metadata tagging","prompt":"Extract every hashtag from this blog excerpt so I can add them as metadata keywords: 'We explore #sustainablefashion, #ethicalbranding, and #greenliving in today's deep dive into conscious consumerism. #ecofriendly #slowfashion'"}],"resultDescription":"Returns a structured object containing the list of hashtags found in the submitted text, including the hashtag strings (with or without the '#' prefix depending on implementation). The response may also include counts or positions depending on the service's output format.","failureModes":["Text exceeds 50,000 character limit — request rejected or truncated","Empty text input returns empty hashtag array","Text with no hashtags returns an empty result set","Payment failure via x402 protocol results in 402 response and no extraction","Malformed JSON body causes a 400 error"],"whenToPreferThis":"Choose this endpoint when you need a cheap, fast, pay-per-call hashtag extraction from raw text without setting up a full NLP pipeline. At $0.0005 USDC per call via x402 on Base, it's ideal for autonomous agents processing social media content at scale where cost-per-call matters. Prefer this over general-purpose NLP APIs when you only need hashtag extraction and want micropayment-based billing with no subscription overhead.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T12:43:21.291Z","isFirstParty":false,"canonicalSlug":"one-engine-text-hashtag-extractor-247977a9"}