The previous two posts covered how events flow from the SDK to the UI. This post focuses on visualizing one specific type of event: tool calls. Tool invocations are the most frequent operations in an Agent application. A typical task might call tools twenty or thirty times—reading files, writing files, executing commands, searching code. If every tool call renders as the same gray block, it's hard
Post 1 covered how AgentBridge converts the SDK's AsyncStream<SDKMessage> into [AgentEvent]. This post looks at what [AgentEvent] becomes — how TimelineView renders 18 event types, handles scroll behavior, and stays smooth when the event count gets large. TimelineView is the main body of the workspace, filling all the space between the sidebar and the input box. Its view hierarchy is shallow: Time
I remember when we met. It feels like forever ago. Was it 2003? We'd talk for hours. Deep into the night. One number press at a time. Because that's how it was back then. And we learned from each other. Tons, actually. And we both improved over the years. We both grew. A lot. But I don't think I grew into something I like. But I mean, I didn't really mean to become what I am. Just some t