"Systems, not prompts: the architecture of an AI feature that doesn't fall over"
When an AI feature misbehaves, the reflex is to open the prompt file. But the prompt is one component in what should be a system. A walk through the architecture that has to exist around the model call: input validation, orchestration that owns state, tool boundaries, output schemas, fallbacks and traces.
AI engineering
Ahmed
- #AIengineering
- #Architecture
- #Agents
9 July 2026
When your AI feature misbehaves, what does your team actually do? In most companies I talk to, the answer is: someone opens the prompt file, adds a paragraph in capital letters telling the model to please stop doing the bad thing, redeploys, and watches. Sometimes it helps. Usually it helps until next week, when the model finds a new way to misbehave that the paragraph did not anticipate, and the cycle repeats.