Looking for Lightweight API Testing Tools for AI-Based APIs (Postman Alternatives?)

As we scale up some of our AI-related projects, we’re finding that traditional tools like Postman work well, but can feel a little heavy when dealing with lots of endpoints and large payloads, especially for AI model serving.

I’ve seen mentions of Bruno and other lightweight options, but I’m curious:

  1. What API testing tools are you using to work efficiently with AI-focused APIs?
  2. Any recommendations for something that supports collaboration, quick documentation generation, and maybe even mock APIs?

Would love to hear what’s working for your teams, especially if it’s something more agile than Postman but still powerful enough for complex API flows.