Squirrelscan MCP Server

The website QA tool for your coding agent squirrelscan is an Open Source cli tool that audits websites for SEO, performance, security, accessibility, agent experience and other issues, and gives your coding agent exact fixes. Run it from the CLI, inside your coding agent, in the cloud, or over MCP. It is available as a remote MCP endpoint.

Teams that want a hosted coding agent endpoint instead of running a local process. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-08-25 · ★ 258 · #89 OF 194 MAINTAINED CODING AGENT · VERIFIED 2026-08-25

MIT · TypeScript servers · how we verify → /methodology

01 · Install Squirrelscan

before you install - you'll need

NO_TELEMETRY

Environment variables documented in the project's README - it lists which are required and which have defaults.

Claude Code

claude mcp add squirrelscan-squirrelscan --transport http https://mcp.squirrelscan.com/mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "squirrelscan-squirrelscan": {
      "url": "https://mcp.squirrelscan.com/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

https://mcp.squirrelscan.com/mcp

transport: streamable-http

endpoint alive - responded to MCP initialize · probed 2026-08-25

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 remote - your agent's requests go to mcp.squirrelscan.com

endpoint auth accepted our unauthenticated MCP initialize - no credentials needed to connect

license MIT - declared in the repository

registry vendor namespace com.squirrelscan - domain-verified with the official MCP registry

03 · What Squirrelscan can do

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

Latest releases

v0.0.87 · 2026-08-21

A reliability fix for long audits. An audit is not just its crawl: once the last · page is fetched there is still link checking, rule evaluation, scoring, · rendering and publishing to do, and on a large site that…

v0.0.86 · 2026-08-20

Three rules about the gap between what your markup claims and what your pages · actually show. Structured data is a promise made to a machine that never reads · the page, so nothing in a per-page validity check can…

v0.0.85 · 2026-08-13

Five new rules that grade a page against the rest of your own site instead of · against a fixed threshold. Every audit rule until now asked the same question of · every site on the internet: is this title too long, is…

04 · Who maintains Squirrelscan

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

05 · Facts

repository: github.com/squirrelscan/squirrelscan
website: https://squirrelscan.com/
category: coding agent - ranked #89 of 194 actively-maintained coding agent servers as of 2026-08-25.
release cadence: 10+ releases in the last 90 days (latest 2026-08-21)
registry: com.squirrelscan/squirrelscan (active, first published 2026-07-18 · 3 versions)

06 · Squirrelscan FAQ

What is Squirrelscan?

Is Squirrelscan still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-25 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

How do I install Squirrelscan?

Run `claude mcp add squirrelscan-squirrelscan --transport http https://mcp.squirrelscan.com/mcp`. The README documents one environment variable (NO_TELEMETRY) to set first. You can also paste the ready-made client config above.

Does Squirrelscan require authentication?

No - the endpoint accepted our unauthenticated MCP initialize when probed on 2026-08-25; you can connect without credentials.

07 · Alternatives to Squirrelscan

Alternatives to Squirrelscan

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

Pairs well with

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

More coding agent MCP servers · Agendum · Starwind UI MCP Server · RLM Tools · Code Nib · Plumb MCP

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