Hidden Technical Debt of AI Systems: Agent Harness (opens in new tab)

Whatever you bolt onto the model today is what the next model will eat. - If you have been building agentic products in the last twelve months, you have been writing harness code: system prompts, tool wrappers, planner-executor loops, retry policies, context compaction strategies, allowlists for which tools an agent can call from which surface, judges for when to stop, and fallbacks for when the model wanders. Even drawing workflows in no-code or low-code tools like n8n is harness work. Every...