Hi,
I released a new version of Humlix today (https://www.humlix.com), and I feel pretty confident that Humlix could be used to improve the quality of your RESTful Web APIs. E.g., I showed in June how I found bugs in GitLab's Web API (see https://medium.com/@humlix/how-to-create-1040-tests-targeting-gitlab-in-5-minutes-with-humlix-5150b85d8664).
If there are some IndieHackers here that would like help setting Humlix up to test your API, I would be happy to help.
I could even run the tests for you if you have a docker-container or something else that is quick to start with.
In short: Show me your RESTful Web API, and I will do my best to help out improving the quality of it.
I'm going to check this out. Can I run your tool as part of a CI/CD pipeline ?
Looks like Fiddler to me. Are you trying to compete directly with them?