What are things you look for in a great API?

I’d love to hear your thoughts on various aspects like a spec, e.g. OpenAPI, where you think is a great place to host your API, resilience, handling errors, observability, testing etc.

If you have examples of great APIs even better! And if you have recommendations for tools to help with your awesome API share those as well.

I’m curious to see people’s stacks and tools!