How to connect a Google Calendar MCP with Codex (4 steps)

Merge's platform facilitates the connection of AI tools, such as Codex, to Google Calendar through its Merge Agent Handler and CLI, enabling seamless integration without embedding Google credentials into repositories. This setup allows Codex to directly access real-time Google Calendar data, including event objects, recurrence rules, and time zone settings, to produce accurate scheduling, calendar sync, and notification services. The process involves installing the Merge CLI, authenticating it with the Merge Agent Handler account, and configuring it to interact with Google Calendar data via a project’s AGENTS.md file. By handling OAuth token storage and refresh, Merge ensures secure and efficient access, allowing users to manage authorizations and scope operations while providing comprehensive audit logging. This integration is particularly beneficial for organizations seeking to provision and govern employee access to AI tools, ensuring that scheduling codes work effectively with actual calendar events.