Building an Evaluation Harness: How to Actually Test if Your AI Agent Works
An agent that works once isn't the same as an agent you can trust. This piece breaks down how to build a real evaluation harness — designing a task set that covers more than the happy path, running tasks repeatedly in sandboxed environments, grading with a mix of rules, LLM-as-judge, and human review, and closing the loop by turning every production failure into a permanent regression test.
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