export type ToolFamily = 'creative' | 'composition' | 'artifact' | 'memory' | 'settings' | 'analysis' | 'control';
export type ToolExecutionMode = 'hosted' | 'client' | 'app' | 'workflow' | 'internal';
export type ToolCostClass = 'free' | 'low' | 'medium' | 'high' | 'variable';
export type ToolLatencyClass = 'inline' | 'interactive' | 'long_running';
export type ToolConfirmationPolicy = 'never' | 'paid' | 'destructive' | 'always';
export type ToolRetrySafety = 'idempotent' | 'dedupe_key_required' | 'not_safe';
export interface ToolMetadata {
    name: string;
    family: ToolFamily;
    executionMode: ToolExecutionMode;
    inputSchemaRef: string;
    outputSchemaRef: string;
    costClass: ToolCostClass;
    latencyClass: ToolLatencyClass;
    mutatesData: boolean;
    producesArtifacts: boolean;
    requiresConfirmation: ToolConfirmationPolicy;
    retrySafety: ToolRetrySafety;
    hiddenFromModel?: boolean;
}
export declare function isToolFamily(value: unknown): value is ToolFamily;
export declare function isToolExecutionMode(value: unknown): value is ToolExecutionMode;
export declare function isToolCostClass(value: unknown): value is ToolCostClass;
export declare function isToolLatencyClass(value: unknown): value is ToolLatencyClass;
export declare function isToolConfirmationPolicy(value: unknown): value is ToolConfirmationPolicy;
export declare function isToolRetrySafety(value: unknown): value is ToolRetrySafety;
export declare function isToolMetadata(value: unknown): value is ToolMetadata;
export interface ToolMetadataValidationError {
    path: string;
    message: string;
}
export interface ToolMetadataValidationResult {
    valid: boolean;
    errors: ToolMetadataValidationError[];
}
export declare function validateToolMetadata(value: unknown): ToolMetadataValidationResult;
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