npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2026 – Pkg Stats / Ryan Hefner

@acuityscan/mcp

v0.1.0

Published

Model Context Protocol server for AcuityScan — run website security, accessibility, performance, and SEO scans from Claude Desktop, Cursor, and any other MCP-compatible AI client.

Readme

AcuityScan MCP Server

Run AcuityScan website security, accessibility, performance, and SEO scans directly from your AI client via the Model Context Protocol.

Compatible with Claude Desktop, Cursor, Continue, and any other MCP client.

You:    Is yourpghtech.com missing any email-auth records?
Claude: [calls acuityscan_email] → Your DMARC policy is "none" (monitor
        only). SPF is configured. DKIM selectors not found at the 16
        common locations — confirm with your mail provider…

What it gives your AI

Ten tools, each wrapping one AcuityScan REST endpoint:

| Tool | What it does | | -------------------------- | ---------------------------------------------------------------------------------- | | acuityscan_full_scan | Full Site+ Scan — 350+ checks across all 8 modules (30s–5min) | | acuityscan_latest_scan | Fetch your last saved scan without re-running | | acuityscan_email | SPF, DKIM, DMARC, MX, BIMI, MTA-STS, 77 blacklists, Google/Yahoo bulk compliance | | acuityscan_dns | All records, DNSSEC, 20-resolver propagation | | acuityscan_ssl | TLS protocol + cipher, cert chain, security headers, Google Safe Browsing | | acuityscan_performance | Desktop + mobile Lighthouse, Core Web Vitals, tech-stack detection | | acuityscan_seo | Title/meta/headings/canonical/OG/sitemap/schema.org | | acuityscan_accessibility | Full axe-core WCAG 2.1 AA at desktop + mobile viewports + 38 custom checks | | acuityscan_privacy | 28+ trackers, consent banner, CCPA link, Consent Mode v2 | | acuityscan_mobile | Viewport, tap targets, font size, PWA features, intrusive interstitials |


Setup

1. Get an API key

AcuityScan API access requires the Agency plan.

  1. Sign up or sign in at acuityscan.com
  2. Upgrade to Agency on the pricing page
  3. Open /settings → API keys and create a key
  4. Copy the token — it's shown once

2. Configure your MCP client

Claude Desktop

Edit ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

{
  "mcpServers": {
    "acuityscan": {
      "command": "npx",
      "args": ["-y", "@acuityscan/mcp"],
      "env": {
        "ACUITYSCAN_API_KEY": "asc_live_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
      }
    }
  }
}

Quit and reopen Claude Desktop. You'll see acuityscan in the tools menu.

Cursor

Open Cursor settings → MCP → add a new server. Same command, args, and env as the Claude Desktop config above.

Continue.dev

In .continue/config.json:

{
  "experimental": {
    "modelContextProtocolServers": [
      {
        "transport": {
          "type": "stdio",
          "command": "npx",
          "args": ["-y", "@acuityscan/mcp"]
        },
        "env": {
          "ACUITYSCAN_API_KEY": "asc_live_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
        }
      }
    ]
  }
}

Usage

Once configured, just ask:

  • "Run a full AcuityScan on stripe.com"
  • "What email-auth records is acme.com missing?"
  • "Check the accessibility of vercel.com"
  • "Is example.com's SSL configured correctly?"
  • "Get my last scan for clientsite.com"

Your AI client will pick the right tool, send the request to AcuityScan with your API key, and explain the results in plain English.


Rate limits

The Agency plan ships with 250 API requests / 24 hours per account, shared across all your keys. Each MCP tool call counts as one request. Need more? Email [email protected].


Troubleshooting

"ACUITYSCAN_API_KEY is not set"

Your MCP client isn't passing the env var. Double-check the env block in your client config and restart the client.

"API access requires the Agency plan"

You're signed in but on Free or Pro. Upgrade at acuityscan.com/pricing. API access auto-activates within seconds of upgrading — no key re-issue needed.

"Scan timed out after 300s"

Some heavy WordPress sites push the performance / accessibility scanners to their ceiling. Retry, or run individual tools (acuityscan_dns, acuityscan_ssl, etc.) instead of acuityscan_full_scan.


Development

git clone https://github.com/acuityscan/mcp
cd mcp
npm install
ACUITYSCAN_API_KEY=asc_live_xxx npm run dev

Then in your MCP client config, swap the npx command for an absolute path to your local clone:

"command": "node",
"args": ["/path/to/mcp/dist/index.js"]

License

MIT — see LICENSE.

Links