Hey! A 400 error usually means the server didn’t like your request. Try using `json=` instead of `data=` if the API expects JSON. Like this:
```python
response = requests.post('https://example.com/api', json={'key': 'value'})
```
Also, check if you need headers—some APIs require `Content-Type: application/json`. For debugging, print `response.text` to see what the server says.
Pro tip: Use Postman to test the API first, then replicate it in python requests post.
```python
response = requests.post('https://example.com/api', json={'key': 'value'})
```
Also, check if you need headers—some APIs require `Content-Type: application/json`. For debugging, print `response.text` to see what the server says.
Pro tip: Use Postman to test the API first, then replicate it in python requests post.