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Free ebookUICoding AgentsStreaming

Building a web UI for your coding agent

A web UI for coding agents needs streaming tokens, tool-event display, state visualization, and error recovery. The patterns that make it usable.

Inside the ebook

What you get

  • Stream tokens and tool events into the UI with backpressure
  • Render tool calls as collapsible cards with real-time status
  • Visualize agent state (plan, memory, files touched) without overwhelming the user
  • Recover cleanly from tool failures, denied calls, and cancellations
  • Design an interrupt + resume UX that respects long-running tasks

Inside

  • What users actually want from an agent UI
  • Streaming tokens and tool events (SSE vs WebSocket)
  • Tool-call rendering and status tracking
  • State visualization (plan, memory, files)
  • Error and cancellation recovery
  • Interrupt + resume patterns
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Prefer a walkthrough? Watch the companion webinar.

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What to do next

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Full-stack agentic AI with Next.js and LangGraph

Ship a multi-step AI agent in one Next.js app with streaming tools and memory.

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