CalendarPipe

CalendarPipe lets users create customizable “pipes” that filter, transform, and sync events across Google Calendar, Outlook, Apple Calendar, and generic feeds. Users can build these pipelines visually, describe the desired behavior in plain English, or write code, and the system runs the transformations in a sandboxed environment. The service generates standard calendar invitations, so recipients receive normal email invites without needing to install additional software or create accounts.

The tool is aimed at individuals and teams who need to keep multiple personal and professional calendars aligned, as well as developers and AI agents that require a dedicated calendar endpoint. By providing an API key and a hosted email address, AI agents can schedule meetings and receive invitations without handling user credentials or OAuth flows.

CalendarPipe operates with a free tier and optional paid plans, and it claims not to store passwords or event data. It works behind corporate firewalls by delivering invitations via email, ensuring compatibility even when third‑party OAuth is blocked.