The SPXI Conformance Instrument operationalizes the self-test of the SPXI-for-Websites protocol.
The distinction is:
The audit checks:
The twelfth protocol deliverable—baseline and thirty-day retest—is reported as advisory rather than included in the static score.
The instrument deliberately inspects server-delivered source. Content available only after client-side JavaScript is scored absent because the measured protocol requires accessibility to non-Google crawlers.
Conformance is not truth. A site may contain all required inscriptions and still be wrong, or be correct while not conforming.
The body reports a companion Python file and example command-line invocations, with human-readable and JSON output modes.