import type { ActionStep, ScratchStep } from './steps';
import { LLMMessage } from '../agent';
export declare class Scratchpad {
    private task;
    private steps;
    setTask(text: string): void;
    clear(): void;
    addThought(text: string): void;
    addAction(action: ActionStep): void;
    addObservation(text: string): void;
    addToolResult(tool: string, output: string): void;
    addReflexion(text: string): void;
    getLastObservation(): string | undefined;
    /**
     * Get all steps in the scratchpad
     * @returns Array of all steps
     */
    getSteps(): ScratchStep[];
    /**
     * Get the most recent output/result for a given tool name.
     */
    getLastToolResult(toolName: string): string | undefined;
    /**
     * Get the last argument value used for a specific key in any tool call.
     */
    getLastArgValue(argKey: string): any;
    toMessages(systemPrompt: string): LLMMessage[];
}
export declare function parseThoughtAction(text: string): {
    thought?: string;
    action?: ActionStep;
    reflexion?: string;
};