Optionalprobe: AdapterProbeResult
The current probe; an unsupported version is not asked.
Optionalcontext: BackendReadContext
Optional cancellation and deadline context (EXEC-001-T08d).
The catalog, or undefined when the CLI does not answer, is older than MIN_CLAUDE_VERSION, or reports a turn or result, which discards the run.
Lists the models Claude Code offers, with the concrete model each alias runs, from the
initializecontrol request of a restricted stream-json session that receives no user message: no model turn and no cost.