Earliest supported layer
Rules distinguish availability, discovery, parsing, configuration, dependency, connection, authentication, registration, exposure, activation, authorization, execution, and persistence.
Codex capability diagnosis
Include the exact action, approval/policy message, surface, and whether the prompt returns in a new session.
Result
Capability Doctor will either return a bounded diagnosis, show the exact evidence still needed, or stop at an honest unknown.
Method and limits
Rules distinguish availability, discovery, parsing, configuration, dependency, connection, authentication, registration, exposure, activation, authorization, execution, and persistence.
A rule must meet a deterministic threshold. Conflicting or incomplete evidence becomes partial or unknown; it is not converted into a confident root cause.
The site does not install capabilities, execute packages, contact private endpoints, edit configuration, or ask for credentials.
A diagnosis is stateless by default. Saved reports use random URLs, expire after seven days, can be deleted immediately, and are excluded from indexing.