Readability

active

English readability analysis — the standard formulas (Flesch Reading Ease, Flesch–Kincaid, Gunning fog, SMOG, Coleman–Liau, ARI), a consensus grade level, per-word syllable counts and reading/speaking-time estimates.

UtilityBasex402 v2exactreadability.openverbs.com ↗︎
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Uptime · 30d
100.0%
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189ms
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9

Endpoints (4 live)

  • POST /v1/syllables — Count syllables per word and in total across the text. (0.002 USDC on Base)
  • POST /v1/reading-time — Estimate reading and speaking time for a text at configurable words-per-minute rates (defaults: 200 wpm reading, 130 wpm speaking). (0.002 USDC on Base)
  • POST /v1/score — Compute the standard English readability formulas — Flesch Reading Ease, Flesch–Kincaid grade, Gunning fog, SMOG, Coleman–Liau and ARI — along with the underlying sentence/word/syllable statistics. Empty text is a clean 400. (0.002 USDC on Base)
  • POST /v1/grade — Summarise a text's difficulty as a single consensus US grade level (averaging the five grade formulas), plus the Flesch Reading Ease, a plain-language difficulty band and an approximate age range. (0.002 USDC on Base)

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