# modal.Client

```python
class Client(object)
```

## is_closed

```python
def is_closed(self) -> bool:
```

## hello

```python
def hello(self):
```

Connect to server and retrieve version information; raise appropriate error for various failures.
## from_credentials

```python
@classmethod
def from_credentials(cls, token_id: str, token_secret: str) -> "_Client":
```

Constructor based on token credentials; useful for managing Modal on behalf of third-party users.

**Usage:**

```python notest
client = modal.Client.from_credentials("my_token_id", "my_token_secret")

modal.Sandbox.create("echo", "hi", client=client, app=app)
```
## get_input_plane_metadata

```python
def get_input_plane_metadata(self, input_plane_region: str) -> list[tuple[str, str]]:
```