When making a create experiment api call, where does it get the credentials from ?

endpoint = '/api/2.0/mlflow/experiments/create'                    │ │
│ │     host_creds = <mlflow.utils.rest_utils.MlflowHostCreds object at      │ │
│ │                  0x7f2203b6bbe0>                                         │ │
│ │      json_body = {'name': '/mnt/files/rohan/kedro_data_science/'}        │ │
│ │         method = 'POST'                                                  │ │
│ │       response = <Response [404]>                                        │ │
│ │ response_proto = <class 'rich.pretty.Node'>.__repr__ returned empty      │ │
│ │                  string