Hooks
What woz runs automatically, and when. A hook is a command Claude Code fires at a fixed moment, without you asking for it.
$ npx -y skills add WithWoz/wozcode-plugin --agent claude-codeShips with woz. Installing the plugin gets these hooks.
What fires, and when
SessionStart
Fires once when a session begins, and again after a context compaction. It is where a plugin sets up its environment, or restores state the compaction dropped.
- Runs session-hook.js.
UserPromptSubmit
Fires before Claude sees each prompt you send. A plugin can use it to inject context, so the same instruction reaches the model every turn instead of only at session start.
- Runs session-hook.js.
PreToolUse
- Runs session-hook.js.
PostToolUse
- Runs reviewer-hook.js.
SubagentStop
- Runs session-telemetry-hook.js.
Stop
- Runs session-telemetry-hook.js.
StopFailure
- Runs session-hook.js.
PreCompact
- Runs session-telemetry-hook.js.
PostCompact
- Runs session-telemetry-hook.js.
Smarter tools for Claude Code that reduce token usage and cost. Replaces built-in file tools with optimized alternatives — fewer tokens per tool call means cheaper sessions that compound over time.
Repo: WithWoz/wozcode-plugin