@Brian_Merritt
Hi, I don’t use Webflow, but I believe the URL is written in the Make an API Call module where you specify the API endpoint, so you can find the version from that URL.
For example, Slack’s Make an API Call module has the following description
I can confirm that the Webflow modules are currently using v2 of the Webflow API.
If you are unsure, check your Webflow modules to see if you have an upgrade icon on it.
An older module version may not work soon as older API versions can be removed any time by the external service, and cause unexpected errors in your scenario. Upgrading the module as soon as possible gives you time to test and adjust to the new changes.For more information on upgrading your modules, see Replacing Legacy Modules with New Modules in the Help Center.
Hope this helps! Let me know if there are any further questions or issues.