AI coding agents hang on interactive Yeoman prompts, invent package versions, and hand-roll UI instead of using Fluent UI — because generic training data doesn't know SharePoint Framework's narrow conventions. SharePoint/spfx-dev-skills is an official agent skill pack that fixes this: this post breaks down what it is, how it's structured, and two rules worth adopting today even without an AI agent.
Copilot Extensibility
Microsoft 365 Copilot API Auth, Permissions, and Production Readiness: The Foundation Before You Build
Most developers hit a 403 on their first Copilot API call — not because of a misconfiguration, but because the Retrieval and Search APIs are delegated-only by design. This post maps the auth model, exact permission scopes per API surface, app registration choices, and SDK options into a single decision-support guide you can work through before writing your first integration call.