Type Alias ApprovalHook 

pub type ApprovalHook = Arc<dyn Fn(&str, &Value) -> Pin<Box<dyn Future<Output = Result<ApprovalDecision, Error>> + Send>> + Send + Sync>;

Async hook invoked before tool execution to check approval.

Receives the tool name and parsed arguments. Returns an ApprovalDecision. When None is returned (no hook registered), all tools are allowed.

Aliased Type

pub struct ApprovalHook { /* private fields */ }