/**
 * Shared provider utilities
 */
import type { ToolMetadata } from '../types.js';
/** Parse a data URL into media type and raw base64 */
export declare function parseDataUrl(url: string): {
    mediaType: string;
    base64: string;
};
/** Recursively add `additionalProperties: false` to all object types in a JSON schema */
export declare function enforceAdditionalProperties(node: Record<string, unknown>): Record<string, unknown>;
/** Convert ToolMetadata[] to OpenAI function-calling format (also used by Ollama) */
export declare function toolsToOpenAIFormat(tools: ToolMetadata[]): Array<{
    type: 'function';
    function: {
        name: string;
        description: string;
        parameters: Record<string, unknown>;
    };
}>;
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