Available when inheriting from ClaudeHooks::Setup:
Runs once during Claude Code startup (before any session begins). Use it to inject global context or perform one-time initialization.
📚 Shared input helpers
| Method | Description |
|---|
source | Startup reason: 'init' (first launch) or 'maintenance' |
📚 Shared hook state methods
| Method | Description |
|---|
add_additional_context!(context) | Add contextual information for Claude |
add_context!(context) | Alias for add_additional_context! |
📚 Shared output helpers
| Method | Description |
|---|
output.additional_context | Get the additional context that was added |
| Exit Code | Behavior |
|---|
exit 0 | Continues normally; STDOUT added as context |
exit 2 | N/A — non-blocking event |