lilAgents MCP

The lilAgents free-tool fleet, as tools for AI agents.

lilAgents grades how visible your site is to AI agents. This is the other half: the same checks, exposed over the Model Context Protocol so Claude, Cursor, and any MCP-aware agent can audit a website themselves. Every tool takes a URL or a domain and is a read-only public lookup.

A free tool by lilAgents.

Tools

Tool	What it does
stack_detect	Fingerprints CMS, framework, hosting, backend, marketing tech, and AI website builders, plus RDAP registration and Ahrefs Domain Rating. Proxies the canonical lilStack service for exact parity.
trace_redirects	Follows every redirect hop and reports each status code and Location.
dns_snapshot	Full DNS snapshot (A, AAAA, MX, TXT, NS, CNAME, SOA, CAA) via DNS-over-HTTPS.
check_headers	Reports which baseline security headers are present or missing.
check_robots	Shows which major AI crawlers robots.txt allows or blocks, plus whether llms.txt exists.
check_indexability	Reads canonical, meta robots, and X-Robots-Tag to say if a page is indexable.
validate_schema	Extracts and validates every JSON-LD block and lists the schema.org types.
domain_rating	The Ahrefs Domain Rating (0 to 100), with the required attribution.
dmarc_check	The DMARC record and policy plus the SPF record for a domain.
sitemap_check	Finds the sitemap and reports its type, entry count, and lastmod coverage.
og_preview	Reads Open Graph and Twitter Card tags, the title and image a preview would show.
alt_audit	Audits a page's images for descriptive, empty, and missing alt text.

Install

Remote, no install (Claude.ai, ChatGPT, and any Streamable HTTP client)

Add this URL as a custom connector or remote MCP server:

https://mcp.lilagents.com

No install and no key. This is the hosted server; it runs the same tools as the package below.

Claude Code

Remote:

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

Or local over stdio:

claude mcp add lilagents -- npx -y @lilagents/mcp

Claude Desktop, Cursor, and other stdio clients

Add this to the client's MCP config (claude_desktop_config.json, .cursor/mcp.json, and so on):

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

From source

git clone https://github.com/lilAgents/mcp.git
cd mcp
pnpm install
node src/index.js

Point your client's command at node with the args ["/absolute/path/to/mcp/src/index.js"].

Try it

Ask your agent things like:

• "Use lilagents to detect what stripe.com is built with."
• "Trace the redirects on this shortened link."
• "Which AI crawlers does openai.com block in robots.txt?"
• "Is this page indexable, and does it have valid JSON-LD?"

Develop

pnpm install
pnpm smoke      # spawns the server and calls every tool against live domains
pnpm inspect    # opens the MCP Inspector

Notes

• Node 18 or newer (uses the built-in fetch).
• Every outbound request is SSRF-guarded (no localhost or private addresses), follows redirects manually, and is time-boxed, matching the live lilAgents tools.
• Ahrefs Domain Rating is returned with its required attribution and license link.

License

MIT. See LICENSE. Made with love by lilAgents.