Lesson 379 of 1455
Reading an Agent Trace
A trace is the full record of what an agent did and why.
Builders · Agentic AI · ~24 min read
Reading an Agent Trace
A trace is the full record of what an agent did and why. Reading traces is how you debug agents.
Tools like LangSmith, Traceloop, and Anthropic's Claude trace UI show every step the agent took, what tools it used, and what each tool returned.
Three things to look for in a trace
- Where the agent got the goal right or wrong
- Which tool calls failed silently
- How long each step took
Key terms in this lesson
The big idea: Reading traces is like being a detective — you reconstruct what the agent thought.
Practice this safely
Try this with a school, hobby, or family example where the stakes are low. Use the AI output as a draft you can question, not as the final answer.
- 1Ask AI to explain trace in plain language, then underline anything that sounds uncertain or too broad.
- 2Give it one detail from "Reading an Agent Trace" and ask for two possible next steps plus one reason each step might be wrong.
- 3Check observability against a trusted source, teacher, adult, expert, or original document before you use it.
End-of-lesson quiz
Check what stuck
8 questions · Score saves to your progress.
Lesson help
Questions are best handled with a grown-up here.
For this age range, Tendril keeps freeform AI chat paused until parent/guardian consent and child-safe moderation are fully verified. Use the quiz, notes, and related lessons below, or ask a parent, guardian, teacher, or librarian to work through the question with you.
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