About readability
A skill for analyzing text readability, suited to writing workflows that assess difficulty and compile text statistics. It calculates several readability scores and suggests edits involving sentence length, complex words, and passive voice.
Key features
- 01Calculate multiple readability scores
- 02Count words, sentences, and average sentence length
- 03Measure complex-word count and share
- 04Estimate passive-voice sentences
- 05Suggest revisions based on the metrics
Use cases
- 01Assess an article's reading difficulty for its audience
- 02Check sentence length and complex-word share
- 03Identify passive voice that may need rewriting
- 04Plan text revisions from the analysis
Install
Copy the command and run it in a terminal.
$
npx skills add https:/After installing, type/readabilityin Claude Code to confirm it loaded.
Details
From the project READMEAnalyze Readability
Calculate and display readability metrics for the provided text.
Input
The user provides text in $ARGUMENTS. If no text provided, ask for it.
Metrics to Calculate
Core Scores
| Metric | Formula | Interpretation |
|---|---|---|
| Flesch Reading Ease | 206.835 - 1.015(words/sentences) - 84.6(syllables/words) | 0-100, higher = easier |
| Flesch-Kincaid Grade | 0.39(words/sentences) + 11.8(syllables/words) - 15.59 | US grade level |
| Gunning Fog Index | 0.4[(words/sentences) + 100(complex words/words)] | Years of education |
| SMOG Index | 1.043 × √(complex words × 30/sentences) + 3.1291 | Grade level |
Complex words = 3+ syllables
Text Statistics
- Word count
- Sentence count
- Average sentence length (words)
- Average word length (characters)
- Complex words count and %
- Passive voice sentences (estimate)
Output Format
## Readability Analysis
### Scores
| Metric | Score | Meaning |
|--------|-------|---------|
| Flesch Reading Ease | [X] | [interpretation] |
| Flesch-Kincaid Grade | [X] | [grade level] |
| Gunning Fog | [X] | [years education] |
| SMOG | [X] | [grade level] |
### Statistics
- Words: [X]
- Sentences: [X]
- Avg sentence length: [X] words
- Complex words: [X] ([Y]%)
### Target Audience
[Who can easily read this based on scores]
### Recommendations
1. [Specific suggestion]
2. [Specific suggestion]
3. [Specific suggestion]
Interpretation Guide
| Flesch Score | Grade | Audience |
|---|---|---|
| 90-100 | 5th | Very easy |
| 80-89 | 6th | Easy |
| 70-79 | 7th | Fairly easy |
| 60-69 | 8-9th | Standard |
| 50-59 | 10-12th | Fairly difficult |
| 30-49 | College | Difficult |
| 0-29 | Graduate | Very difficult |
Recommendations
Based on scores, suggest:
- Sentences to shorten (if avg > 20 words)
- Complex words to simplify
- Passive voice to convert to active
- Specific examples of what to fix
Comments
Markdown supported