Agent Ready HTML

Real status code

In short

An HTTP status that matches what happened: 200 for a page, 404 for a missing path, 429 for throttling. AgentReady makes this a MUST. Example: The guide says not to return 200 for a missing page even if the body suggests alternatives. Related terms: Agent 404, Soft 404, rel="alternate" type="text/markdown", Prerendering.

Source of the example

The example in the summary above is from vercel.com, read 4 November 2026.

Where it shows up on this site

Neighbouring terms

  • Agent 404: A 404 response written for agents, often markdown, that links the index and similar pages so the agent can recover.
  • Soft 404: A missing page that returns 200 with an error message in the body.
  • rel="alternate" type="text/markdown": A link relation in HTML or an HTTP Link header that points from a page to its markdown version.
  • Prerendering: Rendering pages to static HTML at build time so every request gets finished content.

Sources

  1. vercel.com https://vercel.com/kb/guide/make-your-site-readable-by-ai-agents, read 4 November 2026

Last reviewed 4 November 2026