When prompting is not enough for your agent

https://aka.ms/foundry-portal https://aka.ms/InsideMicrosoftFoundryPlaylist You've rewritten Sparkles' instructions five times, and it still misses details or confirms orders too early. Another prompt tweak is just another guess. You use Agent Optimizer in Microsoft Foundry to turn that guesswork into a measured improvement loop. Start with a representative evaluation dataset and clear success criteria, score the current agent, then let the optimizer generate and evaluate candidate instructions. Compare the results against your baseline, review exactly what changed, and check the strongest ca