Lsp MCP

A Model Context Protocol (MCP) server that gives language models access to Language Server Protocol (LSP) functionality across all major programming languages. Unlike existing LSP-MCP servers, this project supports 13 languages out of the box with zero manual configuration - it automatically detects your codebase, selects the right language server, and exposes all LSP operations through a stable…

People who work with language server protocol and lsp and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-07-26 · ★ 3 · #320 OF 945 MAINTAINED OTHER · VERIFIED 2026-09-18

NOASSERTION · TypeScript servers · how we verify → /methodology

01 · Install Lsp MCP

Claude Code

claude mcp add theupsider-lsp-mcp -- npx -y @theupsider/lsp-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "theupsider-lsp-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@theupsider/lsp-mcp"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license no standard license detected - usage rights unclear; check the repo before commercial use

npm package @theupsider/lsp-mcp - published under the repo owner's npm scope (@theupsider)

registry namespace io.github.theUpsider is GitHub-verified and matches the repo owner

03 · What Lsp MCP can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v1.0.7 · 2026-05-05

Add GitHub issue templates for bug reports and feature requests · New Contributors · @Copilot made their first contribution in

v1.0.3 · 2026-04-29

v1.0.0 · 2026-04-29

04 · Who maintains Lsp MCP

lsp-mcp is maintained by theupsider. It's the only MCP server we track from this author; the repo dates to Apr 2026.

05 · Facts

repository: github.com/theupsider/lsp-mcp
category: other - ranked #320 of 945 actively-maintained other servers as of 2026-09-18.
registry: io.github.theUpsider/lsp-mcp (active, first published 2026-05-05)
packages: npm:@theupsider/lsp-mcp

06 · Lsp MCP FAQ

What is Lsp MCP?

Is Lsp MCP still maintained?

Yes - as of 2026-09-18, its last commit was 2026-07-26. We re-verify nightly.

How do I install Lsp MCP?

Run `npx -y @theupsider/lsp-mcp`. You can also paste the ready-made client config above.

Does Lsp MCP run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Lsp MCP

Alternatives to Lsp MCP

Maintained other servers if Lsp MCP isn't the fit.

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