Lexilint MCP Server

by raunakkathuriaio.github.raunakkathuria/lexilintv1.2.0

Offline spell checker + BYOK grammar for AI assistants. Works with Claude Desktop, ChatGPT, Cursor.

0Node.jsstdioofficial registry

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Active6d ago

Install Lexilint MCP server

claude mcp add lexilint -e GEMINI_API_KEY='<gemini-api-key>' -e OPENAI_API_KEY='<openai-api-key>' -e ANTHROPIC_API_KEY='<anthropic-api-key>' -- npx -y lexilint-mcp

{
  "mcpServers": {
    "lexilint": {
      "command": "npx",
      "args": [
        "-y",
        "lexilint-mcp"
      ],
      "env": {
        "GEMINI_API_KEY": "<gemini-api-key>",
        "OPENAI_API_KEY": "<openai-api-key>",
        "ANTHROPIC_API_KEY": "<anthropic-api-key>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "lexilint": {
      "command": "npx",
      "args": [
        "-y",
        "lexilint-mcp"
      ],
      "env": {
        "GEMINI_API_KEY": "<gemini-api-key>",
        "OPENAI_API_KEY": "<openai-api-key>",
        "ANTHROPIC_API_KEY": "<anthropic-api-key>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "lexilint": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "lexilint-mcp"
      ],
      "env": {
        "GEMINI_API_KEY": "<gemini-api-key>",
        "OPENAI_API_KEY": "<openai-api-key>",
        "ANTHROPIC_API_KEY": "<anthropic-api-key>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "lexilint": {
      "command": "npx",
      "args": [
        "-y",
        "lexilint-mcp"
      ],
      "env": {
        "GEMINI_API_KEY": "<gemini-api-key>",
        "OPENAI_API_KEY": "<openai-api-key>",
        "ANTHROPIC_API_KEY": "<anthropic-api-key>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
GEMINI_API_KEY	—	yes	Google Gemini API key for grammar checking; optional when api_key is supplied per call.
OPENAI_API_KEY	—	yes	OpenAI API key for Premium grammar checking; optional when api_key is supplied per call.
ANTHROPIC_API_KEY	—	yes	Anthropic API key for Premium grammar checking; optional when api_key is supplied per call.

Freshness

Active — last maintenance signal 6d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-10-04 · 6d ago · GitHub
Latest release
2026-10-03 · 6d ago · GitHub · v1.2.0
Package published
no data · npm/PyPI
Registry entry updated
2026-10-03 · 6d ago · official registry · v1.2.0

FAQ

›How do I install the Lexilint MCP server in Claude Code?

Run: claude mcp add lexilint -e GEMINI_API_KEY='<gemini-api-key>' -e OPENAI_API_KEY='<openai-api-key>' -e ANTHROPIC_API_KEY='<anthropic-api-key>' -- npx -y lexilint-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Lexilint require an API key?

Yes. It expects GEMINI_API_KEY, OPENAI_API_KEY, ANTHROPIC_API_KEY, of which 3 are secrets.

›Can I use Lexilint as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Lexilint in the official MCP registry?

Yes, as io.github.raunakkathuria/lexilint.