import type { Agent, AgentSession, BatchData, ImageContent, WebSocketRef } from '../types.js';
export declare abstract class BaseAgent implements Agent {
    abstract name: string;
    abstract model: string;
    abstract start(): Promise<void>;
    abstract stop(): Promise<void>;
    abstract createSession(wsRef: WebSocketRef, projectDir: string, resumeSessionId?: string): Promise<AgentSession>;
    /**
     * Format a prompt with image metadata for agents that don't support native multimodal.
     * This adds text descriptions of the images to the prompt.
     */
    protected formatPromptWithImageMetadata(prompt: string, images?: ImageContent[]): string;
    /**
     * Extract images from batch data markers
     * Returns an array of ImageContent objects for markers that have screenshots
     */
    extractImages(data: BatchData): ImageContent[];
    formatPrompt(data: BatchData, projectDir: string): string;
}