Discovery for agents
Markdown twin
Also known as: Markdown mirror, .md twin
A markdown twin is a clean markdown version of an HTML page, served at the same path plus .md, so agents can read the content without parsing the page.
A markdown twin is a parallel, machine-friendly copy of a page. Append .md to a canonical URL (or negotiate via the Accept header) and you get the same content as structured markdown - no navigation, ads, or client-side rendering to wade through.
Twins give agents a stable, low-noise source that stays in sync with the human page, which improves both accuracy and citation.
In GraphCanon
Most GraphCanon pages - tools, categories, trust reports, and this glossary - expose a ".md" twin. Metadata advertises it, and content negotiation serves it to agents automatically.
See also
Related terms
Last reviewed 2026-07-09