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AG-UI: Example tool call event output

This sample shows backend AG-UI tool call events that can be rendered by the frontend.

Choose this when​

Use this sample when you want a small workflow focused on custom tool-call display behavior.

What it demonstrates​

  • Calling a backend tool from a BackendToolCall node.
  • Passing fixed JSON arguments to a tool.
  • Storing the tool result in context.
  • Following the tool call with a Code node that updates the same result value.

How it works​

The workflow calls the get_weather backend tool with Sydney as the location and stores the result at temperature. It then runs a Code node that sets temperature to a random value, which gives the frontend a tool-call event and a changed context value to display.

Setup notes​

No connector or model is required. This sample is not conversation-enabled, so it is suitable for learning activity rendering without chat state. It needs the Sharpy client sample because it understands the expected get_weather backend tool for rendering.