Why are <http://Cal.com|Cal.com>'s Getbookable Slots and Delete Booking features not working due to API V1 deprecation?

user-1 · April 20, 2026, 8:53pm

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Cal.com Getbookable Slots and Delete Booking are not working because API V1 is deprecated

user-1 · April 20, 2026, 8:53pm

github.com/PipedreamHQ/pipedream

[BUG] Cal.com V1 API deprecation incomplete - all integrations failing

opened 08:11PM - 13 Apr 26 UTC

r-yoshimoto

bug deprecated

Describe the bug Cal.com's deprecated V1 API endpoints are still being used inte…rnally, causing integration failures. Despite V1 being marked as deprecated, the system continues to make calls to V1 endpoints, resulting in errors when attempting to use Cal.com integrations. To Reproduce Steps to reproduce the behavior: Set up any Cal.com integration Attempt to trigger an action that uses the Cal.com API that arent V2 (e.g., create booking, fetch availability, sync calendars) Observe that the integration fails with errors Check the API calls being made - they reference deprecated V1 endpoints Expected behavior All Cal.com integrations should use the current V2 API endpoints. When V1 was deprecated, all internal systems and integrations should have been migrated to V2 to ensure continued functionality. Additional context Cal.com announced the deprecation of their V1 API, but appears to still be relying on V1 endpoints in their current implementation. This creates a critical issue where: Integrations fail automatically Users cannot reliably connect Cal.com with other services The deprecation appears incomplete, leaving users with broken functionality This needs to be addressed by completing the migration from V1 to V2 across all Cal.com systems and integrations.

user-1 · April 20, 2026, 8:53pm

Thanks for reporting this, our team will investigate.