mcp-registry/mcp-language-server

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       /// MCP ///
      /// MCP ///
        
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    [server:online]
    [protocol:ready]

mcp-language-server

by isaacphi

MCP server that proxies any stdio-based Language Server (LSP) and exposes semantic code-navigation tools (definition, references, hover, rename, diagnostics, edit) to MCP-capable LLM clients.

748
55
Open Source
GitHub

01

definition

Retrieves the complete source code definition of any symbol (function, type, constant, etc.) from the codebase

02

references

Locates all usages and references of a symbol throughout the codebase

03

diagnostics

Provides diagnostic information for a specific file, including warnings and errors

04

hover

Displays documentation, type hints, or other hover information for a given location

05

rename_symbol

Renames a symbol across the project

06

edit_file

Allows making multiple text edits to a file based on line numbers for reliable and context-economical file editing

Installation

Prerequisites:
1. Go ≥ 1.22 installed and in PATH.
2. Git installed.
Install from source:
# Fetch & build the server binary go install github.com/isaacphi/mcp-language-server/cmd/mcp-language-server@latest
The binary will be placed in `$GOPATH/bin` (usually `~/go/bin`). Ensure this directory is on your PATH:
export PATH="$PATH:$(go env GOPATH)/bin"
Run the server:
mcp-language-server --listen :4389
Optional configuration flags (commonly used – consult `--help` for the full list):
* `--config <file>` – path to a YAML/JSON config file.
* `--log-level debug` – enable verbose logging.
Integration with editors/IDEs:
Point your MCP-capable client or Language-Server-Protocol (LSP) bridge to the TCP port you chose (default `:4389`). No additional authentication is required by default.

Documentation

License: BSD 3-Clause "New" or "Revised" License
Updated 7/30/2025

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