Tutorial: Turn Agent Production Traces into Regression Evals and Fixes

MarcusSchiesser · x · 2026-08-07

The author shares a weekend tutorial demonstrating how to extract a failed production agent trace and turn it into a regression eval.

Using a debugging story of a weather agent, the walkthrough illustrates a complete workflow: trace extraction -> eval creation -> agent fix. The project is open-source and built on OpenAI models and the AI SDK.

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