How Do You Properly Set and Manage curl Headers in Your Requests? or What Are the Best Practices for

Lowercase/uppercase in curl headers *shouldn’t* matter, but I’ve seen servers choke on it. Always match the docs exactly.

Another gotcha: If you’re using `--data` with JSON, curl might override your Content-Type to `application/x-www-form-urlencoded`. Explicitly set it with `-H` to fix that.

For cleaner commands, I use jq to generate the JSON and pipe it into curl. Like:
`echo '{"key":"value"}' | jq . | curl -H "Content-Type: application/json" -d @- https://example.com`