Squiggles MCP Server

Let your agent see the squiggles you'd see in an IDE. squiggles is an MCP server that bridges coding agents to Language Server Protocol (LSP) servers. Configure one or more LSP servers and squiggles exposes their features - diagnostics, go-to-definition, find references, rename, formatting, and more - as MCP tools. Servers start lazily on first tool use, so there's no startup cost for languages you don't touch.

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

VERIFIED ACTIVE

LAST COMMIT 2026-09-25 · ★ 5 · #73 OF 250 MAINTAINED CODING AGENT · VERIFIED 2026-09-30

MIT · TypeScript servers · how we verify → /methodology

01 · Install Squiggles

before you install - you'll need

The README does not document required environment variables for a basic install.

Claude Code

claude mcp add carldaws-squiggles -- npx -y squiggles

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "carldaws-squiggles": {
      "command": "npx",
      "args": [
        "-y",
        "squiggles"
      ]
    }
  }
}

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 MIT - declared in the repository

npm package squiggles - unscoped; check the name against the project README before installing

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

03 · Who maintains Squiggles

squiggles is maintained by carldaws. It's the only MCP server we track from this author; the repo dates to Feb 2026.

04 · Facts

repository: github.com/carldaws/squiggles
category: coding agent - ranked #73 of 250 actively-maintained coding agent servers as of 2026-09-30.
registry: io.github.carldaws/squiggles (active, first published 2026-09-20 · 2 versions)
packages: npm:squiggles

05 · Squiggles FAQ

What is Squiggles?

Is Squiggles still maintained?

Yes - as of 2026-09-30, its last commit was 2026-09-25. We re-verify nightly.

How do I install Squiggles?

Run `npx -y squiggles`. The README does not document required environment variables for a basic install. You can also paste the ready-made client config above.

Does Squiggles 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.

06 · Alternatives to Squiggles

Alternatives to Squiggles

Maintained coding agent servers if Squiggles isn't the fit.

Pairs well with

Servers that cover what Squiggles doesn't - only shown when the pairing reason fits the companion.

More coding agent MCP servers · Carrick · AI Architect MCP Codebase · Automatised Pipeline · Avrotize · Codealive MCP

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