# HTTP Link headers (RFC 8288)

Check id `link-headers-discovery` · Discoverability · runs in the free CLI · pre-release, in calibration

**What we look for.** Whether your homepage sends HTTP Link headers to your sitemap, service docs or API descriptions.

**Why it matters.** An agent learns where things are from the headers, before it parses any page.

**How to pass.** Add Link headers such as rel="service-desc" and rel="sitemap" to your homepage response.

Run it: `npx backwatch your-site.com --pillar discoverability` and find `link-headers-discovery` in the report.