What is Trace?
The step-by-step record of an agent's run: every model call, tool call, input and output, in order. Reading one shows where a run went wrong, which a final score alone cannot.

step 7 of 12 · first wrong turn
An agent trace records…
Write it in your own words in the app.
In real work
The final answer looked fine, but the trace showed the agent had called search eleven times and ignored the first result, which was correct.
In the illustration
The recorder logs every step in order: climb, turn, radio call, reply. On replay a marker steps back along the strip and stops at step 7, where the wrong turn began.
Read this agent trace in your model and mark the first step that went wrong, what the agent saw there, and the harness change that would have caught it.
Try it now
The fastest way to learn a word is to use it. Open this line in the agent you already work in and watch what it does. Change the tool to the one you use.
Go further
01Practice
Make it stick
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02Verify
Prove you know it
Pass the quiz and keep it in a Skills Wallet you can share with anyone who needs proof.
03Career
Find the work that uses it
See which roles lean on this vocabulary, and what they pay in year one.





