Five Things Your Coding AI Agent Wishes You Understood

I keep seeing the same frustration everywhere - Reddit, Discord, Twitter. Someone tells their coding agent to follow a specific pattern, the agent nails it, and then five prompts later, it acts like the conversation never happened. "Why does it keep forgetting?" "Is this a bug?" "I literally just told it that." It’s not a bug. It’s context compression doing exactly what it’s supposed to do. But most people using coding agents – Claude Code, OpenCode, Cursor, Cline – have no idea what’s happening under the hood. They treat agents like black boxes. Magical black boxes. They’re not magical. They’re not even that complex. And once you understand the few core concepts behind them, you’ll stop fighting the tool and start getting way more out of it. 1. Everything is prompting If you take one thing from this post, make it this. Every behavior you see from a coding agent – every "feature", every "skill", every "personality trait" – is the result of a prompt. A system prompt that you never see,