Events & Hooks

The framework exposes a typed EventBus and lifecycle hooks for observability and integration.

EventBus

Use EventBus to publish/subscribe runtime events such as:

• turn boundaries
• tool lifecycle
• GUI updates
• subagent interaction events

Hooks

Common hooks include:

• onSessionStart
• onSessionEnd
• onToolCall
• onToolResult
• onSubagentStep
• onError

Hooks are ideal for logging, tracing, and metrics.