Agent SDK Streaming

Streaming is the difference between "this agent works" and "this agent feels alive". Stream text as it generates, show tool activity, and never block the UI on a long tool call.

When to Use

• Building any interactive agent UI
• Long-running agents where users need to see progress
• Debugging "why does my agent hang?" (often: you're not reading the stream)

Event Types

The SDK emits a typed stream of events. Core types: