Eval workflow for agentic builders: fork any prompt through baseline vs scaffolded agents, blind third-party judge.

A solo founder built an n8n eval workflow for AI agents, A/B testing prompts with plain GPT-4o versus GPT-4o with a reasoning scaffold, using a blind Gemini evaluator. This tool allows builders to test agent performance on their own tasks, focusing on how scaffolding affects depth, sycophancy, and diagnostic procedures.