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

# aion-adk

> Google ADK model helpers for Aion agents.

`aion-adk` is the existing Google ADK helper package for Aion-backed model configuration. It
contains the `aion_lite_llm` helper used by ADK agents that should call Aion's model service.

MCP toolset bindings live in the separate `aion-authoring-adk` package.
Plugin symbols live in the separate `aion-plugin-adk` package.

Use concrete submodule imports. The shared `aion.adk` package is a namespace for ADK-related
packages and does not re-export model, plugin, or MCP helpers at the top level.

## Install

```bash theme={null}
pip install aion-adk
```

When installing through the umbrella SDK package, use:

```bash theme={null}
pip install "aion-sdk[adk-authoring]"
```

## Model helper

Use `aion_lite_llm` when Google ADK model calls should flow through Aion's model service.

```python theme={null}
from google.adk.agents import Agent

from aion.adk.models import aion_lite_llm

agent = Agent(
    name="research_agent",
    model=aion_lite_llm("model-id-from-control-plane"),
)
```

The helper configures ADK's `LiteLlm` with the Aion model-service base URL and a JWT provider backed
by the configured `AION_CLIENT_ID` and `AION_CLIENT_SECRET`.

## Related pages

* [aion-authoring-adk](/sdk/python/packages/aion-authoring-adk)
* [Google ADK MCP Guide](/sdk/google-adk/guides/mcp)