{"uid":"cap_p-xxpKlWS22-xm3ESBJwC","slug":"api-x402node-dev-b83a0515","name":"Text Readability Analyzer","description":"readability score, text readability, Flesch reading ease, reading grade level, reading level, text difficulty, reading age, readability index, text complexity, readability analysis, reading grade, reading ease, text level. Analyze text readability with multiple metrics including reading ease, grade level, syllable and sentence counts. For AI agents content optimization, education tools, writing assistants, accessibility checks. Accepts payment on Base or Solana — either network works.","url":"https://api.x402node.dev/text/readability","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["text"],"properties":{"text":{"type":"string","description":"Input text (required)"}}}},"additionalProperties":false}}},"responseSchema":null,"example":{"request":{"text":"The quick brown fox jumps over the lazy dog. This is a simple sentence. Readability metrics help us understand text complexity. These tools are essential for writers and educators."},"response":{"_hint":"x402 paid endpoints for AI agents — x402node.dev (utilities) · cn402.com (Chinese culture)","char_count":152,"smog_index":9.5,"word_count":29,"gunning_fog":8.44,"text_length":180,"processing_ms":14,"text_standard":"9th and 10th grade","sentence_count":4,"syllable_count":49,"flesch_reading_ease":55.61,"flesch_kincaid_grade":7.3,"automated_readability_index":6.9}},"exampleRequest":{"text":"The quick brown fox jumps over the lazy dog. This is a simple sentence. Readability metrics help us understand text complexity. These tools are essential for writers and educators."},"tags":["x402"],"displayCostAmount":"0.0022","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.0022/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0022","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0022","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_zWzKxqM8A3B-3V6Wp89dJ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0022","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Analyzes text and returns multiple readability metrics including Flesch reading ease score, grade level, syllable count, and sentence count","exampleAgentPrompt":"Can you analyze the readability of this paragraph and tell me the Flesch reading ease score and grade level? 'The mitochondria are organelles found in eukaryotic cells that generate most of the cell's supply of adenosine triphosphate, used as a source of chemical energy.'","exampleUseCases":null,"resultDescription":"Returns multiple readability metrics for the submitted text including Flesch reading ease score (0-100 scale), reading grade level (e.g. 8th grade), reading age, syllable count, sentence count, word count, and a text complexity or difficulty classification.","failureModes":["Empty or missing text body returns validation error","Text too short to compute meaningful statistics (single word or fragment)","Non-UTF-8 or malformed payload returns parse error","Extremely long text may hit payload size limits"],"whenToPreferThis":"Use this endpoint when you need quantitative readability metrics for a piece of text — especially Flesch reading ease, grade level, or syllable/sentence statistics. Ideal for content optimization pipelines, accessibility audits, education-level targeting, and writing assistants that need to recommend simplification. Prefer this over sentiment or NLP classification endpoints when the goal is specifically measuring how easy or hard text is to read.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:50:09.327Z","isFirstParty":false}