When an agent or skill requests a model that is blocked by the availableModels allowlist, a medium-priority warning notification is now shown to the user identifying which agent type made the request and what restriction was applied. Previously, blocked model requests could fail silently.
Evidence
New onModelRestricted callback in agent invocation (search for "agent-model-restricted-")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's release notes agreeAdded enforceAvailableModels managed setting — when enabled, the availableModels allowlist also constrains the Default model (a Default that…