# GET /swagger.json is deprecated

Checkly API deprecated GET /swagger.json without giving a shutdown date yet.

- API: Checkly API (api.checklyhq.com)
- Kind: Endpoint removal
- Announced: May 18, 2026
- Takes effect: no date given yet
- Calls after that day: fail
- Calls it hits: `GET /swagger.json`
- Source: [Announcement](https://www.checklyhq.com/changelog/)
- Page: https://www.okapi.bot/providers/checkly-api/breaking-changes/get-swagger-json-is-deprecated/

## What to use instead

Fetch the API contract from https://api.checklyhq.com/openapi.json (OpenAPI 3) instead.

## Checkly API's words

> The old API spec at api.checklyhq.com/swagger.json is deprecated and frozen. Use the newer OpenAPI spec at api.checklyhq.com/openapi.json instead.