I have a sense that a dumb Web API testing UI application is really not that hard to get AI to implement. These apps all look about the same for a reason. So maybe there will be a prevailing FOSS option that isn't trying to monetize.
FYI the license terms only apply to the prebuilt binaries. You can build and run from source for any use (including commercial), for free.
Happy to answer any questions as well.
I'm for the most part just jaded about it all because I've seen Postman and Insomnia slowly boil the frog with increased pushiness towards logins and monetization. If a project is trying to make money at all, I feel it will inevitably grapple with the same issues. Especially for the kind of product where we can have five different options for in the comments section already. But I hope you do succeed in maintaining an honourable revenue stream.
long-time engineer here, begging others to reconsider this attitude. Engineering work has value, engineers deserve to be paid for their time, and the community will have better software if engineers are able to get paid for their time.
Is there another profession where charging a fair price for a product is looked on with derision the way it is with software?