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Text Readability Analyzer
x402
Text Readability Analyzer is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Analyzes submitted text and returns Flesch Reading Ease score, Flesch-Kincaid grade level, average sentence length, syllable count, difficulty label, and estimated reading time.
Price / call$0.01
Success—
StatusUnknown
How this service works
Readability of text you send: Flesch Reading Ease, Flesch-Kincaid grade, average sentence length, syllables, difficulty label and reading time. Check generated copy before publishing. $0.01 per call.
Output
Returns a JSON object containing the Flesch Reading Ease score (0–100), Flesch-Kincaid grade level (numeric US school grade), average sentence length (words per sentence), total syllable count, a human-readable difficulty label (e.g. 'Very Easy', 'Difficult', 'Very Confusing'), and estimated reading time in seconds or minutes.
Example use cases
Blog post readability check
“Before I publish this blog post, can you analyze its readability and tell me the Flesch Reading Ease score, Flesch-Kincaid grade level, and whether it's appropriate for a general adult audience? Here's the text: 'Eating well doesn't have to be complicated. Simple swaps, like choosing whole grains over refined ones, can make a big difference to your energy levels throughout the day.'”
Marketing copy difficulty audit
“I just wrote this product description and I want to make sure it's not too hard to read for everyday shoppers — can you get me the readability scores, difficulty label, and estimated reading time? Text: 'Our patented nano-ceramic thermal regulation system dynamically modulates heat dissipation to maintain optimal beverage temperature across a six-hour window.'”
Student assignment grade-level check
“Can you check the reading level of this student essay introduction and tell me the Flesch-Kincaid grade, average sentence length, and syllable count? Here it is: 'The proliferation of digital communication technologies has engendered unprecedented transformations in interpersonal dynamics, fundamentally reconstituting the epistemological frameworks through which individuals construct social identity.'”
Technical details
Endpoint
GEThttps://intel.rallylive.ca/data/readability-textWhen to prefer
Choose this endpoint when you need fast, structured readability metrics on a piece of text before publishing or sharing it, especially when you want multiple readability dimensions (Flesch Reading Ease, Flesch-Kincaid grade, syllable count, reading time, and difficulty label) in a single call. Prefer it over manual calculation or full NLP pipelines when cost ($0.01/call) and simplicity matter more than deep linguistic analysis.
Side effects
- Empty or missing text input returns an error or zero scores
- Extremely short text (single word) may produce unreliable scores
- Non-English text may yield inaccurate syllable counts and grade levels
- Payment failure via x402 returns 402 status before processing
- Very large text bodies may time out or be truncated
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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