Let’s be real: most “free APIs” are great if you’re trying to return a list of dogs named Fluffy. But if you’re prototyping a real-world integration, testing logic before the backend is ready, or onboarding a junior dev who wants to actually learn something… they fall short. Fast. That’s why we built apiexplorer.io at Lonti—because we were tired of pretending demo APIs were just for mocking. We use them every day to ship real things, and so do a growing number of teams using our low-code platform Martini. If you haven’t played with it yet, here are five use cases we’ve seen (and used ourselves) that go way beyond “check if GET /products works.” 1.

May 5, 2025 - 02:41
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Let’s be real: most “free APIs” are great if you’re trying to return a list of dogs named Fluffy. But if you’re prototyping a real-world integration, testing logic before the backend is ready, or onboarding a junior dev who wants to actually learn something… they fall short. Fast.

That’s why we built apiexplorer.io at Lonti—because we were tired of pretending demo APIs were just for mocking. We use them every day to ship real things, and so do a growing number of teams using our low-code platform Martini.

If you haven’t played with it yet, here are five use cases we’ve seen (and used ourselves) that go way beyond “check if GET /products works.”

1.