Calendly
ModerateOAuth apps are self-serve from a separate Calendly developer account, with sandbox and production app types and no Calendly review found in the docs.
Agent-researched, not yet reviewed by a personResearched 2026-10-20
Working in dev
15–45 min
Signing in with your own account
Any user can connect
Same day
A Production OAuth app reading scheduled events and invitees (and webhooks for paid-plan users); no listing in Calendly's integrations directory.
- Waiting on
- No review needed
- Cost
- Free to create apps. Webhooks and the Scheduling API need the connecting user to be on a paid Calendly plan; some compliance endpoints are Enterprise-only.
What you need first
A Calendly developer account (separate from a Calendly user account), signed up with GitHub or Google
OAuth apps are created and managed there.
An HTTPS redirect URI for the Production app
Production redirect URIs must be HTTPS; Sandbox allows http://localhost.
A Calendly user account on a paid plan for testing webhooks
Webhooks and the Scheduling API need Professional, Standard, Teams, Enterprise or similar paid plans.