Compute six readability scores for English text (Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, SMOG, Coleman-Liau, Automated Readability Index) plus an average grade level, a reading-level label, a target audience, and text statistics. Scores are null when the text has fewer than 10 words.
This page documents the HTTP endpoint POST /api/tools/readability-calculator/execute. See the MCP reference →
Call it over REST
POST https://api.findutils.com/api/tools/readability-calculator/execute · no API keys · 60 requests/min per IP
Execute — verified arguments
curl -X POST https://api.findutils.com/api/tools/readability-calculator/execute \
-H "Content-Type: application/json" \
-d '{
"text": "The cat sat on the mat. The dog sat on the rug. Both were happy."
}'Parameter schema for this endpoint
curl https://api.findutils.com/api/tools/readability-calculatorInput schema
| Argument | Type | Required | Description |
|---|---|---|---|
| text | string | yes | The text to analyse (at least 10 words for scores). |
Example arguments (verified)
{
"text": "The cat sat on the mat. The dog sat on the rug. Both were happy."
}Also an MCP tool
Claude, Cursor, and any MCP client can call this tool as
findutils:readability_calculator after one connect command.
Connect once
claude mcp add findutils --transport http https://mcp.findutils.com/More Education tools
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