> ## Documentation Index
> Fetch the complete documentation index at: https://arize-ax.mintlify.dev/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Client

<CardGroup>
  <Card title="View source on Github" href="https://github.com/Arize-ai/client_python/blob/main/src/arize/ml/client.py" icon="github" horizontal />
</CardGroup>

Arize class to begin logging predictions and actuals.

Import and initialize Arize Client from `arize.api`

```python theme={null}
from arize.api import Client
```

```python theme={null}
class Client(
    api_key: str,
    space_id: str,
    uri: Optional[str] = "https://api.arize.com/v1",
    max_workers: Optional[int] = 8,
    max_queue_bound: Optional[int] = 5000
)
```

| Argument          | Data Type | Description                                                                                                                                                                                                                    |
| ----------------- | --------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `api_key`         | str       | (Required) Arize-provided api key associated with your service/space. Click "Show API Key" in the "Upload Data" page to copy the key.                                                                                          |
| `space_id`        | str       | (Required) Arize-provided identifier for relating records to spaces. Click "Show API Key" in the "Upload Data" page to copy the key. \*If using version \< 4.0.0, replace `space_id=SPACE_ID` with `organization_key=SPACE_ID` |
| `uri`             | str       | (Optional) URI endpoint required for on-prem customers. Defaults to "[https://api.arize.com/v1](https://api.arize.com/v1)"                                                                                                     |
| max\_workers      | int       | (Optional) Number of max concurrent requests to Arize. Default value = 8                                                                                                                                                       |
| max\_queue\_bound | int       | (Optional) Number of maximum concurrent future objects queued for publishing to Arize. Default value = 5000                                                                                                                    |

### Code Example

```python theme={null}
from arize.api import Client
from arize.utils.types import ModelTypes, Environments, Embedding


API_KEY = 'ARIZE_API_KEY'
SPACE_ID = 'YOUR SPACE ID'
arize_client = Client(space_id=SPACE_ID, api_key=API_KEY)

if SPACE_ID == "SPACE_ID" or API_KEY == "API_KEY":
    raise ValueError("❌ CHANGE SPACE ID AND/OR API KEY")
else:
    print("✅ Arize client setup done! Now you can start using Arize!")
```