Endpoint Retrieval Rate

The direct test of whether structural work is being used rather than merely published.

Measures

Requests to the property's manifest, catalog, health, federation, and plain-text summary endpoints, by client and over time.

Data Source

Raw server request logs.

Indicates

That the declarations are being read, not just served.

What Moves It

Advertising the endpoints where machines look: robots.txt, an alternate link in the page head, and inside the manifest itself.

Does Not Prove

That what was read changed any system's behaviour.

Status

Measured. Notably, this is one of the few checks that can prove structural work reached anything at all.