Hey! Your curl sending json command looks almost correct, but I’ve had issues with single quotes around the JSON data on some systems. Try using double quotes for the JSON and escaping the inner quotes like this:
```bash
curl -X POST -H "Content-Type: application/json" -d "{\"key\":\"value\"}" https://example.com/api
```
Also, check if the server expects any additional headers like `Accept` or `Authorization`. Sometimes APIs are picky about that.
If you’re still stuck, try using a tool like Postman to test the request first. It’s easier to debug there and then replicate it in curl.
```bash
curl -X POST -H "Content-Type: application/json" -d "{\"key\":\"value\"}" https://example.com/api
```
Also, check if the server expects any additional headers like `Accept` or `Authorization`. Sometimes APIs are picky about that.
If you’re still stuck, try using a tool like Postman to test the request first. It’s easier to debug there and then replicate it in curl.