Hmm, I’ve been there. curl sending json can be tricky, especially with quotes. On Linux/Mac, your command should work as-is, but on Windows, you might need to tweak it.
Try this:
```bash
curl -X POST -H "Content-Type: application/json" -d "{\"key\":\"value\"}" https://example.com/api
```
If that doesn’t work, maybe the API expects a different structure. Could you share the exact error message? That might help narrow it down.
Also, tools like Insomnia or Postman are great for testing APIs before using curl.
Try this:
```bash
curl -X POST -H "Content-Type: application/json" -d "{\"key\":\"value\"}" https://example.com/api
```
If that doesn’t work, maybe the API expects a different structure. Could you share the exact error message? That might help narrow it down.
Also, tools like Insomnia or Postman are great for testing APIs before using curl.