How to Properly Use `curl` to Pass a File Object in a Request?

For `curl pass file object`, your command is pretty much correct. Just tweak the field name if the server expects something specific. For example:
```bash
curl -F "json_data=@path/to/file.json" https://example.com/upload
```
If you’re unsure about the server’s requirements, you can use tools like Postman or Insomnia to test the request first. They’re way easier to use for debugging than curl.