https://arcjet.com/learn/coding-agent-hooks-fail-open
Do coding agent hooks fail open? Claude Code, Copilot, Codex, Cursor | Arcjet
Sep 25, 2026 - Claude Code and Copilot hooks fail open, and the Codex and Cursor wrappers fail closed. See what that means for enforcement and how to find unguarded sessions.
open claude codecoding agenthooksfailcopilot