{"uid":"cap_y9zAE6JLWlbD7d80H7ryO","slug":"pennyrail-word-frequency-analyzer-49944511","name":"PennyRail Word Frequency Analyzer","description":"Machine-readable settlement service","url":"https://pennyrail.vercel.app/api/f/text.word-frequency","method":"POST","headers":{},"bodySchema":{"type":"object","required":["input"],"properties":{"input":{"type":"string","description":"string"}}},"responseSchema":{"type":"object","required":["operation","result"],"properties":{"result":{},"operation":{"type":"string"}},"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_W2mOLVmnlFlWSW_9YjvVW","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 and returns the frequency of each word in a given text string","exampleAgentPrompt":"Can you count how often each word appears in this paragraph: 'The quick brown fox jumps over the lazy dog. The dog barked at the fox.'?","exampleUseCases":[{"title":"Blog post keyword density check","prompt":"Analyze this blog post draft and tell me how many times each word appears so I can check if I'm overusing any keywords: 'Content marketing is about creating content that resonates. Great content builds trust and content that educates drives traffic.'"},{"title":"Survey response word analysis","prompt":"I've got a batch of customer feedback combined into one big string — can you count the frequency of every word so I can see which themes come up most?"},{"title":"Literary repetition detection","prompt":"Take this excerpt from my essay and count how many times each word is used — I want to spot any words I'm repeating too much before I submit it."}],"resultDescription":"Returns a JSON object containing the operation name and a result map where each key is a unique word from the input and its value is the number of times that word appears in the input string.","failureModes":["Missing 'input' field returns a validation error","Empty string input may return an empty frequency map","Very large text inputs may time out or exceed payload limits","Non-string input types may cause a schema validation failure"],"whenToPreferThis":"Choose this endpoint when you need a quick, cheap ($0.001 USDC) word frequency count from a raw text string without spinning up a local NLP pipeline. Ideal for lightweight text analytics tasks in agent workflows where you want a pay-per-call model rather than maintaining infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:55:16.800Z","isFirstParty":false}