export type ToolErrorCode = 'PARAMETER_INVALID' | 'USER_INPUT_INCOMPLETE' | 'ASSET_NOT_FOUND' | 'WORKFLOW_VALIDATION_FAILED' | 'MODEL_UNAVAILABLE' | 'PROVIDER_TIMEOUT' | 'GPU_WORKER_FAILED' | 'COST_LIMIT_EXCEEDED' | 'SAFETY_REJECTED' | 'PERMISSION_REQUIRED' | 'USER_CANCELLED' | 'UNKNOWN_ERROR';
export type LegacyToolErrorCategory = 'schema_validation' | 'business_rule' | 'precondition_failed' | 'transient_failure' | 'permanent_failure' | 'insufficient_credits' | 'timeout' | 'cancelled' | 'content_refused';
export declare function mapLegacyToolErrorCategory(category: LegacyToolErrorCategory): ToolErrorCode;
export interface ToolResultAsset {
    asset_id: string;
    type: 'image' | 'video' | 'audio' | 'model';
    url?: string;
    width?: number;
    height?: number;
    duration_seconds?: number;
    fps?: number;
    metadata?: Record<string, unknown>;
}
export interface ToolResultCost {
    spark?: number;
    usd?: number;
    internal_cost_usd?: number;
    notes?: string;
}
export interface ToolResultOk<TParams = Record<string, unknown>> {
    ok: true;
    tool: string;
    job_id?: string;
    model_id?: string;
    workflow_id?: string;
    status: 'completed' | 'in_progress' | 'queued';
    output_assets: ToolResultAsset[];
    params?: TParams;
    estimated_cost?: ToolResultCost;
    warnings?: string[];
    metadata?: Record<string, unknown>;
}
export interface ToolResultErr {
    ok: false;
    tool: string;
    error_type: ToolErrorCode;
    message: string;
    retryable: boolean;
    suggested_next_action?: string;
    metadata?: Record<string, unknown>;
}
export type ToolResult<TParams = Record<string, unknown>> = ToolResultOk<TParams> | ToolResultErr;
export declare function toolOk<TParams = Record<string, unknown>>(fields: Omit<ToolResultOk<TParams>, 'ok' | 'status' | 'output_assets'> & Partial<Pick<ToolResultOk<TParams>, 'status' | 'output_assets'>>): ToolResultOk<TParams>;
export declare function toolErr(fields: Omit<ToolResultErr, 'ok'>): ToolResultErr;
export declare function isToolResultOk<T = Record<string, unknown>>(result: ToolResult<T>): result is ToolResultOk<T>;
export declare function isToolResultErr(result: ToolResult<unknown>): result is ToolResultErr;
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