Werk #19883: Swagger UI: Fix yaml download

Component

REST API

Title

Swagger UI: Fix yaml download

Date

Jun 12, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

3.0.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0p8	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

Downloading the OpenAPI specification in YAML format (openapi-swagger-ui.yaml) from the REST API Swagger UI returned HTTP 404.

The download link for the YAML specification is accessible via Help > REST API > Version 1 Interactive GUI. The route for this file was missing from the versioned API registration, causing the 404 response.

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