LLM Cliché Highlighter MCP Server

One MCP tool that checks supplied text for common LLM writing clichés using the client-side pattern engine from Simon Willison's LLM cliché highlighter. It does not fetch URLs or call any backend service.

Tool

highlight-llm-cliches

• Input: text (plain text, up to 250,000 characters)
• Output: one warning per match, with its phrase and sentence context. Each warning also includes the rule, explanation, character offsets, and chain item count where relevant.

The warnings are heuristic writing feedback, not proof that text was AI-generated.

Live server

Connect an MCP client to:

https://llm-cliche-highlighter.run.mcp-use.com/mcp

Getting Started

First, run the development server:

npm install
npm run dev

Open http://localhost:3000/mcp/inspector with your browser to test your server.

Run npm run typecheck to refresh MCP view types and check the project with its local TypeScript compiler.

Run the automated checks with:

npm test
npm run typecheck
npm run build