AI Coding Agent Hooks

A hook is a shell script your AI coding agent runs automatically at a defined event — before a tool call, after a file edit, before a shell command executes. Used well, hooks enforce the policy you can't rely on a prompt alone to guarantee: block a secret before it's committed, log every tool call for an audit trail, or require a second check before a production command runs. Every hook below is real, copy-paste code — not a concept.

100 hooks · Written for Claude Code's documented hook contract
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📋 Audit & Compliance Logging

8 hooks

A durable, independent record of what an agent did in a session — the evidence an SR 11-7 or SOX change-control review actually asks for.

Append Every Tool Call to an Audit Log
Security
A durable, append-only record of every tool call — independent of the session transcript.
PostToolUse · Claude Code
Hash-Chained Tamper-Evident Audit Log
Security
Each log line embeds the hash of the previous line, so editing history after the fact is detectable.
PostToolUse · Claude Code
Log Every Permission Decision
Security
An append-only record of every allow/deny/ask decision a tool call needed.
PermissionRequest · Claude Code
Log CLAUDE.md & Rules-File Load Events
Security
Records which CLAUDE.md or .claude/rules/*.md files actually loaded into context, and when.
InstructionsLoaded · Claude Code
Log Local & User Settings Changes
Security
Records when a session's own settings.json changes outside the project's checked-in policy.
ConfigChange · Claude Code
Log Model Switches for Change-Control Evidence
Security
Records every from_model → to_model change, with timestamp, for a model-governance review.
PostModelSwitch · Claude Code
Session Start Context Log
Security
Records which project, branch, and directory a session started in.
SessionStart · Claude Code
Session-End Summary Log
Security
Writes one closing line per session — reason, duration marker, session ID — to a durable register.
SessionEnd · Claude Code
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