import type { CanUseTool } from './types/sdk-types.js';
export type ToolPermissionMode = 'allow' | 'deny' | 'ask';
export interface ToolPermission {
    tool: string;
    mode: ToolPermissionMode;
    reason?: string;
}
export interface ToolPermissionRules {
    defaultMode?: ToolPermissionMode;
    tools?: Record<string, ToolPermissionMode | {
        mode: ToolPermissionMode;
        reason?: string;
    }>;
    list?: ToolPermission[];
}
export interface CanUseToolContext {
    toolName: string;
    input: Record<string, unknown>;
}
export interface PermissionDecision {
    behavior: 'allow' | 'deny';
    reason?: string;
}
export declare function createCanUseToolHook(options: {
    rules: ToolPermissionRules;
    onAsk?: (ctx: CanUseToolContext) => Promise<PermissionDecision>;
    onDecision?: (ctx: CanUseToolContext, decision: PermissionDecision) => void;
}): CanUseTool;