UPS API download OpenAPI json file
Download json files location for UPS OpenAPI
UPS OpenAPI tracking and shipping download etc
UPS have like many other carriers moved to OpenAPI for documenting their API collection.
With OpenAPI you are most likely seeking to download the json files for that OpenAPI specification. Those .json files define the API and can be used by developer tooling to generate software models to call those APIs.
GitHub repository
The OpenAPI document json files can be downloaded from the UPS API Documentation repository
https://github.com/UPS-API/api-documentation
as you can see you can reap your json files and build code from there.
Hope this helps those trying to find it quickly.