What it does
This is the ESLint team's official MCP server, part of their ongoing monorepo rewrite. It integrates ESLint's linting engine with Claude and other Claude-compatible systems, providing filesystem access for analyzing and reporting on JavaScript and TypeScript code. The server reads and writes the filesystem without making network requests, running ESLint analysis locally against your project files. Note that this server exposes zero tools through the MCP interface—it likely operates through resources or prompts rather than discrete tool calls.
Who it's for
JavaScript and TypeScript developers using Claude Code or Claude in other compatible environments who want to integrate ESLint linting directly into their LLM workflows, especially those working with projects using the newer ESLint configuration format.
Common use cases
- Analyze TypeScript or JavaScript files for lint violations in real time within Claude Code
- Get AI-assisted explanations and fixes for ESLint rule violations
- Automate code quality checks as part of a Claude-driven development or review workflow
- Test code against project-specific ESLint configurations without leaving the Claude interface
Setup pitfalls
- The server reads and writes your filesystem—ensure your project directory is properly sandboxed if working with untrusted code
- Requires a valid ESLint configuration file (
.eslintrc,eslint.config.js, etc.) in your project root or parent directories - Must be kept in sync with the ESLint version in your project; compatibility issues may arise with older ESLint v8 configurations on the new rewrite
- Zero tools exposed by the MCP interface means integration patterns may differ from traditional tool-based MCP servers; consult the repository's documentation for resource-based usage