Know your codebase or your AI agent will go rogue, warns PyLate author
antoine_chaffin · x · 2026-09-21
PyLate author Antoine Chaffin responds to an analysis of AI coding with 15 critiques and a serious observation: how well you understand a codebase's internals determines how well you can steer a coding agent.
- On PyLate, whose internals he knows deeply, he can pinpoint what the agent should do, spot odd results, and give accurate feedback. On an unfamiliar codebase, the agent "goes rogue" — mistakes took days to find, and he never feels confident in the results.
- It's worse in areas where he's weakest (e.g., infra): the agent dumps jargon and he can't tell whether he lacks fundamentals or the agent is hallucinating.
- You can get good results without understanding internals, but your ceiling for quality control drops sharply — understanding internals is a core skill in the agent era.
Related event: Deep Codebase Knowledge Is Key to Taming AI Coding Agents(2 posts)→
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