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

# Langtrace Python SDK

## Github

> Github repository for Langtrace Python SDK's -> [Scale3-Labs/langtrace-python-sdk](https://github.com/Scale3-Labs/langtrace-python-sdk).

## To use the managed version of Langtrace, follow these steps:

1. Sign up by going to this link [Langtrace](https://langtrace.ai).
2. Create a new Project and Generate an API key.

## Installation

1. In your application, install the Langtrace Typescript SDK using npm:

```bash Shell theme={null}
pip install langtrace-python-sdk
```

## Initialization

1. Initialize the Langtrace SDK with the API key you generated in the step 2:

```python theme={null}
# Import it into your project
from langtrace_python_sdk import langtrace # Must precede any llm module imports
langtrace.init(api_key = '<LANGTRACE_API_KEY>')
```

## For self-hosted Langtrace add *`api_host`* and point the URL to your own DNS or IP sddress.Langtrace

Example below:

<CodeGroup>
  ```python Python theme={null}
  from langtrace_python_sdk import langtrace
  langtrace.init(
    api_key="<YOUR API KEY>",
    api_host="http://localhost:3000/api/trace",
  )
  ```
</CodeGroup>

<Note>
  Here we are using `http://localhost:3000/api/trace` as the API host. You can replace it with your own DNS or IP address.
</Note>

For more options on how to use SDK, please refer to [features section](/features).