Structured output

[ashishsingla87]

Hi, I tried using structured output in ADK. Following are my observations.
I used Litellm model sdk, with bedrock provider and claude 3.7 model.
I was able to do tool calling just fine.
But when i provided structured output along with tool calling. It fails due to an issue that structured output cannot be run along with tool calling.
Also I have to provide structured output in prompt as well along with a sample. Then what is the use of output_schema field?

Structured output is a big plus, as this can help do agent orchestration as well. Unlocking this will really help with usability of ADK.

[casepot]

Try making a dedicated structured output LLMAgent, give it to a higher level agent as an AgentTool, and also give the tools you want to use alongside structured output to that higher level agent. I haven't tried this yet but it is what I was planning on doing based on reading the docs. You can also make a tool that returns the args as structured output.

But seems structured output + tool calling in one LLMAgent is explicitly not supported right now.

[ashishsingla87]

Thank you, I will give it a try. Quick question though. We can also create a custom agent which can do structured output after tool calling as sequential agent.