Building & Observing a Deep Agent for Email Triage with LangSmith
In this video, we walk through how to build and observe a deep agent using LangSmith.
We’ll build a simple email assistant that reads incoming emails and decides how to handle them — triage, respond, or take action — using a prompt-driven approach.
You’ll learn:
How to define a deep agent in a single file
• Why most agent complexity lives in the system prompt (not the architecture)
• How to encode rules, context, and decision criteria into prompts
• How to use LangSmith to observe, validate, and debug agent behavior
This walkthrough is useful if you’re building longer-running agents and w…
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