Why is “good enough” still the default for so many API designs?

Like, we’ll ship a working endpoint and think the job’s done.
But then you try to use someone else’s API and it’s like:

• No error codes you can trust
• Docs that forgot half the parameters
• Rate limits? Surprise!
• Versioning? What versioning? I get it — MVPs move fast. But when did “just hit the endpoint and pray” become an acceptable dev experience?

🧩 I’d love to hear from the devs here:
What’s your personal API design rule you wish more teams followed?
Or even better — what’s the most elegant API you’ve ever worked with?