# API v1 stops working

Calendly API deprecated /v1/* without giving a shutdown date yet.

Calendly API v1 is being retired without an announced shutdown date. This deprecation affects all /v1/* endpoints. Once retired, calls to these endpoints fail.

## What to use instead

Integrations must migrate to API v2. Refer to the migration guide for details.

- API: Calendly API (api.calendly.com)
- Kind: Endpoint removal
- Takes effect: no date given yet
- Calls after that day: fail
- Calls it hits: `/v1/*`
- Source: [Changelog](https://developer.calendly.com/release-notes)
- Verified: October 27, 2026, against Calendly API's own pages
- Page: https://www.okapi.bot/providers/calendly-api/breaking-changes/api-v1-stops-working/

## Calendly API's words

> Calendly API v1 is being retired. All integrations must migrate to API v2. See our [migration guide](/docs/getting-started/how-to-migrate-from-api-v1-to-api-v2) for details.

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent