{"uid":"cap_zws-LDfcG7o0Mnx4NwMb8","slug":"fastapi-online-word-frequency-analyzer-fa4bdfc9","name":"fastapi.online Word Frequency Analyzer","description":"Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding & crypto utilities, date/time calculators, geo/coordinate math, math & finance calculators, novelty tools, and business/social writing generators — 179 endpoints in all, across multiple specialized self-hosted models. Pay per call with crypto — no signup — or get an API key.","url":"https://api.fastapi.online/word-frequency","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"text":{"type":"string","maxLength":100000,"minLength":1},"top_n":{"type":"integer","maximum":200,"minimum":1}}},"responseSchema":null,"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_YsfM0_r3zHsjfxXkU9wJm","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":"Counts and ranks word frequencies in a text, returning the top N most common words and their counts.","exampleAgentPrompt":"Can you analyze this article and tell me the top 20 most frequently used words? Here's the text: [paste text here]","exampleUseCases":[{"title":"Identify overused words in draft","prompt":"I just wrote this 2,000-word blog post and I'm worried I'm overusing certain words — can you find the top 15 most frequent words in it so I can see what to vary? Here's the text: [paste draft]"},{"title":"Term frequency for SEO audit","prompt":"I need to check keyword density in this webpage copy — run a word frequency count on it and show me the top 30 most common words so I can see if my target keywords are prominent enough."},{"title":"Vocabulary analysis of a novel excerpt","prompt":"I'm studying this chapter from a classic novel and want to understand its vocabulary patterns — can you count word frequencies and give me the top 25 most used words?"}],"resultDescription":"A ranked list of the top N words by frequency, each paired with its occurrence count, ordered from most to least frequent. The number of results is capped by the top_n parameter (max 200).","failureModes":["Empty or missing text field returns a validation error","top_n exceeding 200 or below 1 returns a schema validation error","Text exceeding 100,000 characters is rejected","Payment not provided or insufficient USDC triggers a 402 response","Network timeout on very large texts near the character limit"],"whenToPreferThis":"Choose this endpoint when you need a simple, fast, per-call word frequency count without setting up a local NLP pipeline. It's ideal for one-off text analysis tasks, content audits, or vocabulary checks where you want a ranked frequency table quickly and cheaply at $0.0005 per call with no signup required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T07:05:12.164Z","isFirstParty":false}