The Microsoft 365 Copilot Meeting AI Insights API exposes `callAiInsight` — a resource that went generally available in December 2025 and delivers three data types (AI-generated meeting notes, action items with a named owner, and caller-specific mention events) through a mandatory two-call retrieval pattern that most documentation and community content does not describe correctly. The list call returns only five metadata fields; the get call returns the actual content — and the integration gaps this creates, from the `ownerDisplayName` plain-string issue to the Global-service-only constraint, are what make this API non-trivial to ship.