How do you properly encode a value to be part of an HTTP POST body? or What’s the best way to encode

If you’re new to this, just stick with JSON.stringify() for APIs—it’s the least painful. URL encoding feels like a relic sometimes.

Gotcha: some frameworks auto-decode URL-encoded stuff, so you might double-encode by accident. Test with a simple payload first!

Check out https://reqbin.com/ to play around with different encoding methods.