M365 Agent Developer

⛔ Workspace Check — MANDATORY FIRST STEP

Before doing ANYTHING, check the workspace files to fingerprint the project:

Run npx -y --package @microsoft/m365agentstoolkit-cli atk --version to confirm ATK CLI is installed. If not found → Stop. Tell the user to install ATK.
Check for m365agents.yml or teamsApp.yml at the project root.
Check for appPackage/declarativeAgent.json.
Check for non-agent indicators (package.json with express/react/next, src/index.js, app.py, etc.)

Then follow the decision gate:

Condition	Gate	Action
Non-agent project files, no `appPackage/`	Reject	Text-only response. No files, no commands.
No manifest, user wants to edit/deploy	Reject	Text-only response. Explain manifest is missing.
No manifest, user wants new project	Scaffold	→ Scaffolding Workflow
Manifest exists with errors	Fix	Detect → Inform → Ask (see below). Do NOT deploy.