Leaderboard/Buildwithfern

Buildwithfern

buildwithfern.com/learn
Score: 100 out of 100, grade A+100
Grade A+
Last checked: September 11, 2026 · afdocs v0.18.7 · Rerun
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Simulation: Fern // bud
Day 0
CategoryOther
Checks passed22/23Warnings0Failed0

Buildwithfern scores 100/100 (Grade A+), placing it among the most AI-agent-ready documentation sites evaluated. It passes 22 of 23 checks (96%), demonstrating strong support for AI coding agents. All critical checks pass.

CHECK RESULTS

How your docs scored

auth-gate-detectionAll 10 sampled pages are publicly accessibleLearn more
auth-alternative-accessAll docs pages are publicly accessible; no alternative access paths neededLearn more
llms-txt-existsllms.txt found at 2 locations; using https://buildwithfern.com/learn/llms.txt as canonicalLearn more
llms-txt-validllms.txt follows the proposed structure (H1, blockquote, heading-delimited link sections)Learn more
llms-txt-sizellms.txt is 4,464 characters (under 50,000 threshold)Learn more
llms-txt-links-resolveAll 10 same-origin sampled links resolve (38 total links)Learn more
llms-txt-links-markdown10/10 same-origin sampled links point to markdown content (100%)Learn more
llms-txt-directive-htmlllms.txt directive found in HTML of all 10 sampled pages, near the top of contentLearn more
llms-txt-directive-mdllms.txt directive found in markdown of all 10 sampled pages, near the top of contentLearn more
markdown-url-support10/10 sampled pages support .md URLs (100%)Learn more
content-negotiation10/10 sampled pages support content negotiation (100%)Learn more
rendering-strategyAll 10 sampled pages contain server-rendered contentLearn more
page-size-markdownAll 10 pages under 50K chars (median 9K, max 15K)Learn more
page-size-htmlAll 10 sampled pages under 50K chars (median 501K HTML → 32K markdown (94% boilerplate))Learn more
content-start-positionContent starts within first 10% on all 10 sampled pages (median 0%)Learn more
tabbed-content-serializationNo tabbed content detected across 10 sampled pagesLearn more
section-header-qualityNo tabbed content found; header quality check not applicableLearn more
markdown-code-fence-validityAll 110 code fences properly closed across 12 pagesLearn more
http-status-codesAll 10 sampled pages return proper error codes for bad URLsLearn more
redirect-behaviorNo redirects detected across 10 sampled pagesLearn more
llms-txt-coveragellms.txt covers 100% of 368 sitemap doc pages; 14 nested indexes omitted (2829 sitemap pages excluded); 3 llms.txt links not in sitemap (may indicate stale links or incomplete sitemap)Learn more
markdown-content-parityAll 10 pages have equivalent markdown and HTML content (avg 0% missing)Learn more
cache-header-hygieneAll 12 endpoints have appropriate cache headersLearn more

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