TextKit
Sentiment, language detection, readability, keywords, summaries and profanity filtering. Free tier, RapidAPI key.
Hosted MCP Server
npx add-mcp 'https://textkit-sentiment-language-readability-keywords.p.rapidapi.com/mcp'Installs into Claude Code, Codex, Cursor and more
Documentation
TextKit - Sentiment, Language, Readability & Keywords