Free tool

Hook Fail-Open Analyzer

Paste a bash Claude Code hook script below. It's checked against the failure patterns we've seen fail silently in production — the same patterns our Autonomous Agent Ops Kit ships its hooks designed to avoid, fail-closed by default.

Your input never leaves this page — analysis runs entirely in your browser, nothing is uploaded.

Want hooks built fail-closed from the start?

This analyzer flags patterns after the fact. The Autonomous Agent Ops Kit ships three production hooks — spend-guard, secret-shield, command-guard — written to fail closed, plus the ledger and autonomy-loop patterns that go with them.

See the Autonomous Agent Ops Kit