{"uid":"cap_2W_Yh5SahJMH9dRFbjGuG","slug":"agent402-tools-readability-score-00ea4f73","name":"agent402.tools Readability Score","description":"Compute Flesch-Kincaid Grade Level, Flesch Reading Ease, Gunning Fog Index, and Automated Readability Index from text. Returns all 4 scores plus word, sentence, and syllable counts.","url":"https://agent402.tools/api/readability-score","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"text":{"type":"string","description":"Text to analyze (min 10 chars)"}}},"responseSchema":{"type":"json","example":{"words":16,"sentences":3,"syllables":17,"gunningFog":3.2,"fleschReadingEase":104.59,"fleschKincaidGrade":-0.89,"automatedReadability":-2.84}},"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_HVKaDQlBIP8gBl1Vn8OEL","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":"Computes four standard readability metrics (Flesch-Kincaid Grade Level, Flesch Reading Ease, Gunning Fog Index, Automated Readability Index) plus word, sentence, and syllable counts from input text.","exampleAgentPrompt":"Can you check the readability of this paragraph and give me the Flesch-Kincaid grade level, Flesch Reading Ease, Gunning Fog, and ARI scores: 'The mitochondria is the powerhouse of the cell, generating ATP through oxidative phosphorylation in a highly regulated biochemical process.'?","exampleUseCases":null,"resultDescription":"Returns all four readability scores (Flesch-Kincaid Grade Level, Flesch Reading Ease, Gunning Fog Index, Automated Readability Index) plus the word count, sentence count, and syllable count derived from the submitted text.","failureModes":["Text shorter than 10 characters returns a validation error","Empty or missing 'text' field returns a 400 bad request","Very short single-word inputs may produce unreliable or zero-division scores","Payment not included or insufficient USDC returns a 402 Payment Required response"],"whenToPreferThis":"Choose this endpoint when you need multiple standard readability metrics computed in a single call rather than individually. It is ideal when you want both grade-level estimates (Flesch-Kincaid, Gunning Fog, ARI) and an ease score (Flesch Reading Ease) together, along with raw linguistic counts (words, sentences, syllables) for further analysis.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T19:14:03.629Z","isFirstParty":false}