{"uid":"cap_FzPU3Sdl6zcca6aTnK1Xf","slug":"one-engine-hashtag-extractor-t9-c46f2862","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-token/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_fr-5LRYzpowbc-rVe6ZVp","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 and suggests relevant hashtags from a given text input of up to 50,000 characters.","exampleAgentPrompt":"Can you analyze this 2000-word article about electric vehicles and pull out the most relevant hashtags I should use when sharing it on social media?","exampleUseCases":[{"title":"Social media post tagging","prompt":"I just wrote this caption for my Instagram post about sustainable fashion — can you extract the best hashtags to include so it gets more reach?"},{"title":"Blog article hashtag discovery","prompt":"Here's the full text of my blog post on machine learning trends — what hashtags should I attach to it when I cross-post it to LinkedIn and Twitter?"},{"title":"Marketing campaign content tagging","prompt":"I have this product description for our new running shoes launch — pull out all the relevant hashtags from the text so I can use them in our campaign posts."}],"resultDescription":"Returns a structured object containing a list of hashtag recommendations derived from the input text, likely including the hashtag strings themselves and potentially relevance or frequency signals.","failureModes":["Text exceeds 50,000 character limit — request rejected or truncated","Empty text input returns empty or error response","Poorly structured or non-topical text may yield few or no meaningful hashtags","Network or payment (x402) failure causes 402 or 5xx error","Rate limiting or quota exhaustion returns error response"],"whenToPreferThis":"Choose this endpoint when you need lightweight, pay-per-call hashtag extraction from raw text without a heavy NLP platform subscription. Ideal for autonomous agents that process content on-demand and need cost-effective tagging at $0.018 USDC per call via x402 on Base.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T12:44:08.522Z","isFirstParty":false,"canonicalSlug":"one-engine-hashtag-extractor-t9-c46f2862"}