{"uid":"cap_k0tO4HHkqZ-uspSq6yqZE","slug":"one-engine-hashtag-extractor-t9-889af70a","name":"ONE Engine Hashtag Extractor (T9)","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/t9?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":"0.018","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":"$0.018/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.018","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.018","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm__ZO_xAUij7NJCwO4sdsPD","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.018","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Extracts hashtags from a given text string using T9-style processing, returning all identified hashtag tokens.","exampleAgentPrompt":"Can you pull out all the hashtags from this Instagram caption for me: 'Loving the golden hour vibes today! #sunset #photography #goldenhour #nature #travel'?","exampleUseCases":[{"title":"Social media post hashtag audit","prompt":"Here's the text from our last 10 Instagram posts — can you extract all the hashtags from each one so I can see which tags we've been using most?"},{"title":"Content moderation hashtag scanning","prompt":"I need to check this user-submitted post for hashtags before it goes live — can you pull out every hashtag from this text: 'Big sale this weekend! #discount #deals #shopnow #limitedtime'?"},{"title":"Hashtag strategy research from competitor posts","prompt":"I've copied the captions from a competitor's last 20 tweets into this text block — can you extract all the hashtags so I can analyze what topics they're targeting?"}],"resultDescription":"Returns a structured object containing the list of hashtags found in the submitted text. Each hashtag is identified as it appears in the input (including the # symbol), enabling downstream aggregation, deduplication, or trend analysis.","failureModes":["Text exceeds 50,000 character limit — request rejected with validation error","Empty or missing 'text' field — returns error due to required field constraint","Text with no hashtags — returns empty hashtag list","Payment not attached or insufficient USDC — x402 payment required error","Malformed JSON body — request parsing error"],"whenToPreferThis":"Choose this endpoint when you need a cheap, low-latency, pay-per-call hashtag extraction from raw text without setting up a full NLP pipeline. It is ideal for agents processing social media content, user-generated text, or scraped posts where hashtag identification is a discrete step. At $0.018 USDC per call via x402 on Base, it suits high-volume agentic workflows where cost predictability matters and no subscription or API key management is desired.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T12:44:07.278Z","isFirstParty":false,"canonicalSlug":"one-engine-hashtag-extractor-t9-c46f2862"}