Vercel scores 83/100 (Grade B), passing 13 of 22 checks (59%). The documentation is broadly accessible to AI agents but has 7 areas that could be improved to better serve automated tooling.
# Agent Score Fix Report — Vercel URL: https://vercel.com/docs Score: 83/100 (Grade B) I need help improving the AI-readiness of the documentation at https://vercel.com/docs. Agent Score found 3 failing checks and 4 warnings. ## Failing Checks (3) - [content-discoverability] Llms Txt Size: llms.txt is 348,470 characters (exceeds 100,000 threshold; will be truncated by most agents) - [page-size] Page Size Html: 10 of 10 sampled pages convert to over 100K chars (max 625K, 43% boilerplate) - [observability] Markdown Content Parity: 3 of 10 pages have substantive content differences between markdown and HTML (avg 20% missing) ## Warnings (4) - [content-discoverability] Llms Txt Valid: llms.txt contains parseable links but doesn't fully follow the proposed structure: https://vercel.com/llms.txt: No blockquote summary found - [content-discoverability] Llms Txt Links Markdown: Same-origin links point to HTML, but 3 have .md variants available - [content-discoverability] Llms Txt Directive: llms.txt directive found in 9 of 10 sampled pages, but buried deep in the page (past 50%) - [observability] Llms Txt Freshness: llms.txt covers 1257/1495 sitemap doc pages (84%); 238 missing; 22 llms.txt links not in sitemap (may indicate stale links or incomplete sitemap) ## Fix Instructions For each issue above, please: 1. Analyze the documentation site at https://vercel.com/docs 2. Implement the specific fix 3. Verify the fix would cause the check to pass ### Common fixes: - **No llms.txt**: Create /llms.txt following https://llmstxt.org — list all doc pages in markdown format - **No .md URL support**: Configure your docs platform to serve pages at equivalent .md URLs (e.g. /docs/quickstart.md) - **No content negotiation**: Return markdown when request includes Accept: text/markdown header - **Large page size**: Reduce nav boilerplate, inline scripts, and repetitive markup - **No sitemap**: Generate /sitemap.xml listing all documentation URLs - **Auth walls**: Ensure docs pages return 200 without requiring login cookies or tokens - **No Last-Modified header**: Configure your server/CDN to include Last-Modified response headers - **Tab content hidden**: Ensure tabbed content is rendered in the HTML (not JS-only) so agents can read all variants ## Run afdocs Locally for More Detail To get deeper visibility into what's failing, run afdocs against your docs: npx afdocs https://vercel.com/docs --fixes --verbose - **--fixes**: Adds "Fix:" lines to the output for each warn/fail check with actionable remediation steps - **-v, --verbose**: Shows per-page details (specific URLs, character counts, error codes) for checks with issues — useful for per-URL visibility into what's failing
CHECK RESULTS
How your docs scored
markdown-content-parity3 of 10 pages have substantive content differences between markdown and HTML (avg 20% missing)
llms-txt-freshnessllms.txt covers 1257/1495 sitemap doc pages (84%); 238 missing; 22 llms.txt links not in sitemap (may indicate stale links or incomplete sitemap)
cache-header-hygieneAll 11 endpoints have appropriate cache headers
auth-gate-detectionAll 10 sampled pages are publicly accessible
auth-alternative-accessAll docs pages are publicly accessible; no alternative access paths needed
llms-txt-sizellms.txt is 348,470 characters (exceeds 100,000 threshold; will be truncated by most agents)
llms-txt-validllms.txt contains parseable links but doesn't fully follow the proposed structure: https://vercel.com/llms.txt: No blockquote summary found
llms-txt-links-markdownSame-origin links point to HTML, but 3 have .md variants available
llms-txt-directivellms.txt directive found in 9 of 10 sampled pages, but buried deep in the page (past 50%)
llms-txt-existsllms.txt found at 1 location(s); 1 failed to fetch
llms-txt-links-resolveAll 10 same-origin sampled links resolve (1717 total links)
tabbed-content-serialization6 tab group(s) across 4 of 10 sampled pages; all serialize under 50K chars
markdown-code-fence-validityAll 33 code fences properly closed across 11 pages
section-header-quality4 page(s) with tabs found, but no section headers inside tab panels to evaluate
page-size-html10 of 10 sampled pages convert to over 100K chars (max 625K, 43% boilerplate)
rendering-strategyAll 10 sampled pages contain server-rendered content
page-size-markdownAll 10 pages under 50K chars (median 8K, max 17K)
content-start-positionContent starts within first 10% on all 10 sampled pages (median 4%)
markdown-url-support10/10 sampled pages support .md URLs (100%)
content-negotiation9/10 sampled pages support content negotiation (90%)
http-status-codesAll 10 sampled pages return proper error codes for bad URLs
redirect-behaviorNo redirects detected across 10 sampled pages
