DISCOVERY SIGNALS · LIVE FROM THE INDEX

Which APIs have an AGENTS.md?

3%

of the APIs in the Discry Index publish an AGENTS.md.

11 pass1 partial383 failof 395 scanned

What this signal is

AGENTS.md is a README written for coding agents: how to authenticate, the golden-path first call, conventions, and the mistakes agents most often make against your system. Coding agents look for it by name.

For an API producer it is the cheapest high-leverage artifact in the discovery layer — one markdown file that replaces an afternoon of an agent reconstructing your integration path by trial and error.

Definition →How to ship it →Real-world examples →

Notable passes and misses

This is the widest gap between leaders and the rest of the corpus. OpenAI, GitHub, Slack, Cloudflare, Vercel, Clerk, and Supabase ship one; Stripe, Twilio, Notion, Plaid, and most of the payments and CRM categories do not. Where llms.txt adoption is now a majority position, AGENTS.md remains a minority signal — early-mover territory for any API competing on integration experience.

Every API, checked

395 APIs
Pass11
Partial1
Fail383
Show the other 353

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Check data assessed under Discry methodology 3.0.0 · Methodology