Indexable Surface

The unglamorous floor under every other discovery signal. A property cannot be discovered on URLs that return errors, redirect in loops, or exclude themselves.

Measures

Published URLs returning a successful status, carrying a self-referencing canonical, not excluded by robots directives, and present in the sitemap.

Data Source

Site crawl plus the published record inventory, checked against server responses.

Indicates

Whether the property's own configuration is standing in the way before anything external is considered.

What Moves It

Fixing broken internal links, keeping the sitemap generated from content rather than maintained by hand, and checking that nothing advertised as public is blocked.

Does Not Prove

That eligible pages will be indexed. Eligibility is permission, not outcome.

Status

Measured. Checked at build time and repeatable at any point.