LSP Tools

An MCP server to build LSP

Installation

Installing for Claude Desktop

Manual Configuration Required

This MCP server requires manual configuration. Run the command below to open your configuration file:

npx mcpbar@latest edit -c claude

This will open your configuration file where you can add the LSP Tools MCP server manually.

LSP Tools MCP Server

A Model Context Protocol (MCP) server providing Language Server Protocol-like functionality for text analysis.

Features

  • Find Regex Position: Find the 0-indexed line and column positions of regex pattern matches in a file
  • List Allowed Directories: Get a list of directories the server is allowed to access

Installation

npm install
npm run build

Usage

# Start the server allowing access to a specific directory
node dist/index.js /path/to/allowed/directory

# Start the server with multiple allowed directories
node dist/index.js /path/to/dir1 /path/to/dir2 /path/to/dir3

Development

Running Tests

The project uses Jest for testing. Run the tests with:

npm test

To run tests in watch mode during development:

npm run test:watch

Linting

Lint the code with ESLint:

npm run lint

Tool Documentation

find_regex_position

This tool finds the 0-indexed line and column positions of regex pattern matches in a file.

Parameters:

  • path: The path to the file to search in
  • regex: The regular expression pattern to search for

Returns:

  • An array of matches with the following properties:
    • match: The matched text
    • line: The starting line (0-indexed)
    • column: The starting column (0-indexed)
    • endLine: The ending line (0-indexed)
    • endColumn: The ending column (0-indexed, exclusive)

list_allowed_directories

This tool lists all directories that this server is allowed to access.

Parameters:

  • None

Returns:

  • An array of absolute paths to allowed directories

License

MIT

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LSP Tools: MCP Server – MCP.Bar