You can find all OAS (OpenAPI Specification) files for our APIs to download at https://docs.nitrobox.io/v2/openapi.
Remarks on API version & release tag
Every OAS file available contains a version (e.g. v1), suffixed by a release tag indicating ongoing changes to that specific OAS file and hence API version (e.g. v1-1.2.0). The release tag does not express any degree of API change but is an indicator for an update only as all changes are anyhow implemented backward compatible within that API version. You can find further information about API versioning and backward compatibility in our API lifecycle policy.
Please check our Changelog for any changes and our API Migration Guide as well.