{"uid":"cap_94EAr90dJhZ9TfOOMRgQ9","slug":"pennyrail-word-frequency-counter-fbc0416d","name":"PennyRail Word Frequency Counter","description":"Machine-readable settlement service","url":"https://pennyrail.vercel.app/api/p/nano/text.word-frequency--count-words-frequency","method":"POST","headers":{},"bodySchema":{"type":"object","required":["input"],"properties":{"input":{"type":"string"}}},"responseSchema":{"type":"object","additionalProperties":true},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wUsU6TCugA18LjxCCP24G","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Counts the frequency of each word in a given text input, returning word counts as structured data","exampleAgentPrompt":"Can you count how often each word appears in this text: 'The quick brown fox jumps over the lazy dog. The dog barked at the fox.'?","exampleUseCases":[{"title":"SEO keyword density analysis","prompt":"Analyze this blog post draft and tell me the frequency of every word so I can check my keyword density: 'Content marketing is essential. Content drives traffic. Great content builds trust.'"},{"title":"Academic text vocabulary audit","prompt":"Count every word's frequency in this paragraph from my essay so I can see if I'm overusing certain terms: 'The theory of evolution explains biological diversity. Evolution occurs through natural selection. Natural selection acts on variation.'"},{"title":"Customer review term extraction","prompt":"Take this batch of customer feedback text and count how many times each word appears so I can spot the most commonly mentioned topics: 'great service fast delivery good packaging fast shipping great quality.'"}],"resultDescription":"A JSON object mapping each unique word (lowercased or as parsed) to its integer count of occurrences in the input text. The response schema is open (additionalProperties: true), so the keys are the words and the values are their frequencies.","failureModes":["Empty input string may return an empty object or an error","Very large text inputs may hit payload size limits or timeout","Missing 'input' field returns a 400-level validation error","Non-string values for 'input' may cause a parsing error","Punctuation handling may vary — words may or may not be stripped of punctuation"],"whenToPreferThis":"Use this endpoint when you need a quick, cheap ($0.001 USDC) server-side word frequency count without running local NLP libraries. Prefer it over client-side solutions when you need a reproducible, stateless computation in a pipeline or agent workflow. It's well-suited for small-to-medium text snippets where spinning up a full NLP stack is overkill.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:53:52.388Z","isFirstParty":false}