Agentmail

llms.txt exists

llms.txt found at 2 locations; using https://docs.agentmail.to/llms.txt as canonical

llms.txt follows the standard structure

llms.txt follows the proposed structure (H1, blockquote, heading-delimited link sections)

llms.txt fits in an agent's context

llms.txt is 41,872 characters (under 50,000 threshold)

llms.txt links work

All 15 same-origin sampled links resolve (308 total links)

llms.txt links point to Markdown

14/15 same-origin sampled links point to markdown content (93%)

Pages point agents to llms.txt

llms.txt directive found in HTML of all 15 sampled pages, near the top of content

Markdown pages point agents to llms.txt

llms.txt directive found in markdown of all 15 sampled pages, near the top of content

Pages are available as Markdown

15/15 sampled pages support .md URLs (100%)

Server returns Markdown when asked

15/15 sampled pages support content negotiation (100%)

Content is in the HTML without JavaScript

All 15 sampled pages contain server-rendered content

Markdown pages fit in context

All 15 pages under 50K chars (median 9K, max 25K)

HTML pages fit in context

All 15 sampled pages under 50K chars (median 273K HTML → 17K markdown (94% boilerplate))

Content starts near the top

Content starts within first 10% on all 15 sampled pages (median 0%)

Tabs don't bloat the page

No tabbed content detected across 15 sampled pages

Headings inside tabs name their variant

No tabbed content found; header quality check not applicable

Code blocks are well-formed

All 150 code fences properly closed across 17 pages

Missing pages return a real 404

All 15 sampled pages return proper error codes for bad URLs

Redirects stay on the same host

No redirects detected across 15 sampled pages

Markdown matches the HTML page

4 of 15 pages have minor content differences between markdown and HTML

llms.txt covers the whole site

No sitemap found; cannot assess llms.txt coverage without a sitemap as ground truth

Cache headers allow timely updates

All 17 endpoints have appropriate cache headers

Gated docs offer another way in

All docs pages are publicly accessible; no alternative access paths needed

Docs are readable without logging in

All 15 sampled pages are publicly accessible

Sitemap lists the docs pages

The sitemap at https://www.agentmail.to/sitemap.xml lists 0 of the 306 docs pages found through llms.txt and page links.

Crawlers and AI assistants may read the docs

robots.txt lets Googlebot, Bingbot, OAI-SearchBot, PerplexityBot, Claude-SearchBot and Claude-User read the docs.

Links and section anchors work

1 of 45 references checked on the sampled pages are broken: 1 link. 1 more could not be verified (timeouts or blocked requests) and is not counted.

Sitemap entries still exist

No sitemap entries for these docs to check.

Pages say when they were last changed

15 of 15 sampled pages state when they were last changed.

Endpoints in the docs exist in the API spec

Found https://docs.agentmail.to/openapi.json, but the sampled pages mention no endpoints to compare against it.

Deprecated operations are marked as such

https://docs.agentmail.to/openapi.json marks no operation as deprecated, so there is nothing to compare.