MCP Language Server

Name: MCP Language Server
Author: isaacphi

isaacphi

Get started Repository

Gives MCP clients language-server tools such as go to definition, references, rename and diagnostics.

Setup

Choose your client, copy the config, then fill in any required environment variables.

Add to Cursor Add to VS Code

claude mcp add language --env WORKSPACE_PATH='<WORKSPACE_PATH>' --env LANGUAGE_SERVER_EXECUTABLE='<LANGUAGE_SERVER_EXECUTABLE>' --env LOG_LEVEL='<LOG_LEVEL>' -- go run github.com/isaacphi/mcp-language-server@latest --workspace /path/to/codebase/ --lsp language-server-executable

~/.codex/config.toml

[mcp_servers.language]
command = "go"
args = ["run", "github.com/isaacphi/mcp-language-server@latest", "--workspace", "/path/to/codebase/", "--lsp", "language-server-executable"]
env = { WORKSPACE_PATH = "<WORKSPACE_PATH>", LANGUAGE_SERVER_EXECUTABLE = "<LANGUAGE_SERVER_EXECUTABLE>", LOG_LEVEL = "<LOG_LEVEL>" }

# codex mcp add language --env WORKSPACE_PATH='<WORKSPACE_PATH>' --env LANGUAGE_SERVER_EXECUTABLE='<LANGUAGE_SERVER_EXECUTABLE>' --env LOG_LEVEL='<LOG_LEVEL>' -- go run github.com/isaacphi/mcp-language-server@latest --workspace /path/to/codebase/ --lsp language-server-executable

~/.cursor/mcp.json

{
  "mcpServers": {
    "language": {
      "command": "go",
      "args": [
        "run",
        "github.com/isaacphi/mcp-language-server@latest",
        "--workspace",
        "/path/to/codebase/",
        "--lsp",
        "language-server-executable"
      ],
      "env": {
        "WORKSPACE_PATH": "<WORKSPACE_PATH>",
        "LANGUAGE_SERVER_EXECUTABLE": "<LANGUAGE_SERVER_EXECUTABLE>",
        "LOG_LEVEL": "<LOG_LEVEL>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "language": {
      "type": "stdio",
      "command": "go",
      "args": [
        "run",
        "github.com/isaacphi/mcp-language-server@latest",
        "--workspace",
        "/path/to/codebase/",
        "--lsp",
        "language-server-executable"
      ],
      "env": {
        "WORKSPACE_PATH": "<WORKSPACE_PATH>",
        "LANGUAGE_SERVER_EXECUTABLE": "<LANGUAGE_SERVER_EXECUTABLE>",
        "LOG_LEVEL": "<LOG_LEVEL>"
      }
    }
  }
}

~/.gemini/settings.json

{
  "mcpServers": {
    "language": {
      "command": "go",
      "args": [
        "run",
        "github.com/isaacphi/mcp-language-server@latest",
        "--workspace",
        "/path/to/codebase/",
        "--lsp",
        "language-server-executable"
      ],
      "env": {
        "WORKSPACE_PATH": "<WORKSPACE_PATH>",
        "LANGUAGE_SERVER_EXECUTABLE": "<LANGUAGE_SERVER_EXECUTABLE>",
        "LOG_LEVEL": "<LOG_LEVEL>"
      }
    }
  }
}

claude_desktop_config.json

{
  "mcpServers": {
    "language": {
      "command": "go",
      "args": [
        "run",
        "github.com/isaacphi/mcp-language-server@latest",
        "--workspace",
        "/path/to/codebase/",
        "--lsp",
        "language-server-executable"
      ],
      "env": {
        "WORKSPACE_PATH": "<WORKSPACE_PATH>",
        "LANGUAGE_SERVER_EXECUTABLE": "<LANGUAGE_SERVER_EXECUTABLE>",
        "LOG_LEVEL": "<LOG_LEVEL>"
      }
    }
  }
}

.trae/mcp.json

{
  "mcpServers": {
    "language": {
      "command": "go",
      "args": [
        "run",
        "github.com/isaacphi/mcp-language-server@latest",
        "--workspace",
        "/path/to/codebase/",
        "--lsp",
        "language-server-executable"
      ],
      "env": {
        "WORKSPACE_PATH": "<WORKSPACE_PATH>",
        "LANGUAGE_SERVER_EXECUTABLE": "<LANGUAGE_SERVER_EXECUTABLE>",
        "LOG_LEVEL": "<LOG_LEVEL>"
      }
    }
  }
}

Environment variables

WORKSPACE_PATH
LANGUAGE_SERVER_EXECUTABLE
LOG_LEVEL

Replace the placeholders with your own credentials and keep them out of version control.

Setup

Environment variables

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