A chat UI that watches agents plan, delegate, and drop files

What it does

Deep Agents UI is a TypeScript frontend for the Deep Agents harness, which runs agents capable of planning, shell access, and sub-agent delegation. It connects to a LangGraph deployment and gives you a chat interface to drive those agents. You can flip between letting an agent run end-to-end or stepping through its logic one action at a time.

The interesting bit

The UI pulls the agent’s working files straight out of LangGraph state and renders them in a browsable panel, turning an invisible scratchpad into something you can actually read. Combined with a debug mode that lets you rewind and rerun specific steps, it feels closer to an agent IDE than a simple chat wrapper.

Key highlights

• Chat interface wired to a LangGraph deployment by Assistant ID and URL.
• Debug Mode for step-by-step execution and rerunning specific agent steps.
• Live file inspector for agent-generated files stored in LangGraph state.
• Optional LangSmith API key support for accessing deployed applications.

Verdict

Worth a look if you are already running Deep Agents or LangGraph deployments and want a visual debugger and file inspector. If you are after a general-purpose LLM chatbot UI, this is too tightly coupled to the Deep Agents harness to be useful.