import type { AgentAction, AgentFinish } from '@langchain/classic/agents';
import type { ToolsAgentAction } from '@langchain/classic/agents/openai/output_parser';
import type { BaseChatMemory } from '@langchain/classic/memory';
import { DynamicStructuredTool, type Tool } from '@langchain/classic/tools';
import type { BaseChatModel } from '@langchain/core/language_models/chat_models';
import { HumanMessage } from '@langchain/core/messages';
import { ChatPromptTemplate, type BaseMessagePromptTemplateLike } from '@langchain/core/prompts';
import type { IExecuteFunctions, ISupplyDataFunctions, IWebhookFunctions } from 'n8n-workflow';
import type { ZodObject } from 'zod';
import { type N8nOutputParser } from './src/utils/output_parsers/N8nOutputParser';
export declare function getOutputParserSchema(outputParser: N8nOutputParser): ZodObject<any, any, any, any>;
type BinaryPassthroughOptions = {
    passthroughBinaryImages?: boolean;
    passthroughBinaryPdfs?: boolean;
};
type BinaryContentFormat = 'standard' | 'openai-responses';
export declare function extractBinaryMessages(ctx: IExecuteFunctions | ISupplyDataFunctions, itemIndex: number, options: BinaryPassthroughOptions, contentFormat?: BinaryContentFormat): Promise<HumanMessage>;
export declare function fixEmptyContentMessage(steps: AgentFinish | ToolsAgentAction[]): AgentFinish | ToolsAgentAction[];
export declare function handleAgentFinishOutput(steps: AgentFinish | AgentAction[]): AgentFinish | AgentAction[];
export declare function handleParsedStepOutput(output: Record<string, unknown>, memory?: BaseChatMemory): {
    returnValues: Record<string, unknown>;
    log: string;
};
export declare const getAgentStepsParser: (outputParser?: N8nOutputParser, memory?: BaseChatMemory) => (steps: AgentFinish | AgentAction[]) => Promise<AgentFinish | AgentAction[]>;
export declare function getChatModel(ctx: IExecuteFunctions | ISupplyDataFunctions | IWebhookFunctions, index?: number): Promise<BaseChatModel | undefined>;
export declare function getOptionalMemory(ctx: IExecuteFunctions | ISupplyDataFunctions | IWebhookFunctions): Promise<BaseChatMemory | undefined>;
export declare function getTools(ctx: IExecuteFunctions | ISupplyDataFunctions | IWebhookFunctions, outputParser?: N8nOutputParser): Promise<Array<DynamicStructuredTool | Tool>>;
export declare function prepareMessages(ctx: IExecuteFunctions | ISupplyDataFunctions, itemIndex: number, options: {
    systemMessage?: string;
    passthroughBinaryImages?: boolean;
    passthroughBinaryPdfs?: boolean;
    outputParser?: N8nOutputParser;
    model?: BaseChatModel;
}): Promise<BaseMessagePromptTemplateLike[]>;
export declare function preparePrompt(messages: BaseMessagePromptTemplateLike[]): ChatPromptTemplate;
export {};