isaacphi/mcp-language-server

Overview

mcp-language-server provides an MCP wrapper around existing language servers. It exposes semantic code actions like go to definition, find references, rename, and diagnostics to any MCP-compatible client.

Best for

Best for
Developers building MCP-based IDEs or automating code analysis via AI agents

Use cases

• Query code symbols and references from an AI coding agent
• Automate refactoring tasks like rename across a project
• Integrate language-server diagnostics into a chat-based development flow

How to use

Tools exposed

• definition
• references
• diagnostics
• rename_symbol
• edit_file

Tested with

Claude Desktop

Notes

mcp-language-server provides an MCP wrapper around existing language servers. It exposes semantic code actions like go to definition, find references, rename, and diagnostics to any MCP-compatible client.

1,539 stars on GitHub. Last updated 2026-03-01. Licensed BSD-3-Clause.

Use cases

• Query code symbols and references from an AI coding agent
• Automate refactoring tasks like rename across a project
• Integrate language-server diagnostics into a chat-based development flow

Pros

• Leverages stable LSP infrastructure already maintained per language
• Simple Go implementation with 1500+ stars indicates community trust
• Works with any MCP client without per-language integration work

Cons

• Depends on external language servers being correctly installed per project
• Limited to actions the underlying LSP server exposes (no custom analysis)
• No built-in multi-language orchestration; each language needs its own server

Indexed from awesome-mcp-servers-punkpeye and enriched against its public facts.