import type { ContractRegistry } from '../registry.js';
export type ToolCostClass = 'free' | 'image.standard' | 'image.premium' | 'image.external' | 'video.standard' | 'video.premium' | 'video.vendor.standard' | 'video.vendor.premium' | 'audio.standard' | 'audio.speech' | 'compose.standard' | 'compose.ffmpeg';
export type ToolRiskLevel = 'safe' | 'paid' | 'destructive';
export interface ToolCostMetadata {
    tool: string;
    costClass: ToolCostClass;
    riskLevel: ToolRiskLevel;
    userVisibleCost: string;
    description: string;
}
export declare const TOOL_COST_METADATA: ReadonlyArray<ToolCostMetadata>;
export declare function getToolCostMetadata(toolName: string): ToolCostMetadata | undefined;
export declare function listPaidTools(): ReadonlyArray<ToolCostMetadata>;
export declare function listToolsByRiskLevel(level: ToolRiskLevel): ReadonlyArray<ToolCostMetadata>;
export declare function populateToolCostMetadata(registry: ContractRegistry): void;
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