export type ToolError = {
    code: string;
    message: string;
    hint?: string;
    details?: Record<string, unknown>;
};
export type ToolMeta = {
    durationMs: number;
    retries: number;
    timestamp: string;
};
export type ToolResult<T> = {
    ok: boolean;
    data?: T;
    error?: ToolError;
    meta: ToolMeta;
};
export declare const okResult: <T>(data: T, meta: Omit<ToolMeta, "timestamp">) => ToolResult<T>;
export declare const errorResult: (error: ToolError, meta: Omit<ToolMeta, "timestamp">) => ToolResult<never>;
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