Agent harness engineering: change one variable, test five pipeline stages
MaryamMiradi · x · 2026-09-16
Most people improve AI agents by changing everything at once. Maryam Miradi proposes a 20-minute testing harness and a five-step engineering loop — testing parser, retriever, decision architecture, model, and context configuration one variable at a time. Run the same cases, trace the pipeline, and compare quality, cost, latency, grounding, and pass rates against baseline to localize breakage and catch regressions.
Related event: Harness Engineering: making AI agent improvement a measurable discipline(4 posts)→
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