Technical

Server-side, code-level, infra-level. llms.txt, robots, schema, structured data.

Cornerstone

25 May 2026
llms.txt: Spec, 100-Domain Adoption Audit, and Setup
We audited 100 top developer-tools and SaaS sites for an llms.txt file. Only 37 of them serve one at the apex — and the gap is concentrated in the places you might expect it not to be. The full spec, the audit, and a 10-minute setup.

All articles (1)

llms.txt: Spec, 100-Domain Adoption Audit, and Setup
Cornerstone
25 May 2026
We audited 100 top developer-tools and SaaS sites for an llms.txt file. Only 37 of them serve one at the apex — and the gap is concentrated in the places you might expect it not to be. The full spec, the audit, and a 10-minute setup.