Type: url
Original: https://ranthebuilder.cloud/blog/agentic-coding-hooks-deterministic-ai-guardrails/
Status: generated
Summary
A practitioner post arguing that everything supplied to a coding agent through its context window is a suggestion rather than a guarantee, and that hooks — code the runtime executes rather than the model — are the right layer for the small set of rules that must hold every time. It works through Claude Code’s hooks implementation in detail (lifecycle events, PreToolUse decision mechanisms and their fail-open/fail-closed tradeoff, and the three placement levels), treats settings files as a supply-chain risk because a hook is code that runs automatically, and surveys the same feature shipping across Cursor, OpenAI Codex, Gemini CLI and GitHub Copilot CLI.