llms.txt Checker & Generator & Monitor : AI Search Readiness (GEO)

Audit and generate llms.txt — the file AI crawlers and answer engines (ChatGPT, Claude, Perplexity, Gemini) read to understand your site and find its key pages. This tool checks whether your site's llms.txt (and its optional llms-full.txt companion) is spec-compliant, scores your AI search readiness 0-100, and can draft a new llms.txt from your own sitemap — no crawling, no login required, nothing stored.

What it does

llms.txt is quickly becoming a core piece of generative engine optimization (GEO) — alongside traditional SEO and robots.txt, it's now one of the signals AI answer engines use to understand and cite a site. Most sites don't have one; many that do have one that isn't structured correctly. This MCP server:

• Fetches and validates /llms.txt and /llms-full.txt against the llmstxt.org spec (title, summary, sectioned links).
• Scores AI-search readiness 0-100 with a concrete, prioritized list of issues and fixes — not a vague grade.
• Distinguishes a genuinely missing llms.txt from a site that's down or blocking automated checks — never guesses.
• Notes /sitemap.xml and /robots.txt presence for context.
• Drafts a new llms.txt from a site's own sitemap and homepage metadata when one doesn't exist yet.
• Audits up to 50 sites at once for portfolio- or client-level LLM SEO reviews.

Who it's for

• SEO and content teams adding llms.txt to their AI-search / GEO checklist — no technical setup or API key required.
• AI-visibility auditors and agencies running readiness checks across client sites, with a transparent 0-100 score.
• Marketing teams who want their site correctly represented to AI answer engines and AI crawlers.
• Developers and AI agents who need an llms.txt check or draft as one step inside a larger MCP workflow.

Tools

1. audit_llms_txt — Checks one site's llms.txt/llms-full.txt, validates structure, scores AI-search readiness 0-100 with issues + fixes. Example: { "url": "example.com" }
2. generate_llms_txt — Drafts a new llms.txt from a site's sitemap.xml and homepage metadata — no crawl. Example: { "url": "example.com" }
3. bulk_audit_llms_txt — Audits up to 50 sites in one call with a pass/fail summary. Example: { "urls": ["example.com", "another-site.com"] }

FAQ

What is llms.txt? A plain-text file at /llms.txt that gives AI assistants a structured map of your site — a title, a summary, and links grouped by section — so they can find and cite the right pages. How do I add llms.txt to my site? Call generate_llms_txt with your domain to get a draft from your own sitemap and homepage copy, review it, then publish it at /llms.txt. Does my site have llms.txt? Call audit_llms_txt with your domain — hasLlmsTxt and readinessScore tell you instantly, with a fix list if it's missing or incomplete. Do I need an API key or login? No — this checks public files only and needs no credentials.

Trust & limits

Reads public files only, never anything behind a login or paywall. Every fetch is capped and streamed; nothing is stored beyond the response. An AI-readiness aid for GEO/LLM SEO work, not a ranking guarantee.