Type Alias HookCallback 

pub type HookCallback = Arc<dyn Fn(HookInput, Option<String>, HookContext) -> BoxFuture<'static, Result<HookJSONOutput, Error>> + Send + Sync>;

Callback type for hook functions.

Invoked when a matching hook event occurs. Receives:

• input (HookInput) — Event-specific input data.
• tool_use_id (Option<String>) — Optional tool use identifier (for tool-related hooks).
• context (HookContext) — Hook context with additional information.

Returns a HookJSONOutput JSON value with optional control and output fields.

Aliased Type

pub struct HookCallback { /* private fields */ }