Loop Engineering stack A clean layered diagram showing Prompt Engineering, Context Engineering, Harness Engineering, and Loop Engineering as a recurring system contract. Loop Engineering Stack From single prompts to recurring, stateful, verified agent systems Prompt Engineering What should I say to the model? Context Engineering What state, memory, docs, and examples should the agent see? Harness Engineering What tools, permissions, sandboxes, traces, and checks surround one agent run? Loop Engineering A recurring system contract for agent work. 1. Goal + Trigger Define success, cadence, and work intake. 2. Context + Harness Load state, tools, permissions, and isolation. 3. Delegate + Verify Route work, test, evaluate, and collect receipts. 4. State + Next Action Persist, repeat, report, or escalate. Core contract: objective, trigger, discover/intake, workspace, context, delegation, verification, state, budget, escalation, exit.