import type { StructuredToolInterface } from "@langchain/core/tools";
import type { BaseChatModel, BaseChatModelCallOptions } from "@langchain/core/language_models/chat_models";
import { ChatPromptTemplate } from "@langchain/core/prompts";
import { OpenAIClient } from "@langchain/openai";
import { ToolDefinition } from "@langchain/core/language_models/base";
import { OpenAIToolsAgentOutputParser, type ToolsAgentStep } from "./output_parser.js";
import { AgentRunnableSequence } from "../agent.js";
export { OpenAIToolsAgentOutputParser, type ToolsAgentStep };
/**
 * Params used by the createOpenAIToolsAgent function.
 */
export type CreateOpenAIToolsAgentParams = {
    /**
     * LLM to use as the agent. Should work with OpenAI tool calling,
     * so must either be an OpenAI model that supports that or a wrapper of
     * a different model that adds in equivalent support.
     */
    llm: BaseChatModel<BaseChatModelCallOptions & {
        tools?: StructuredToolInterface[] | OpenAIClient.ChatCompletionTool[] | any[];
    }>;
    /** Tools this agent has access to. */
    tools: StructuredToolInterface[] | ToolDefinition[];
    /** The prompt to use, must have an input key of `agent_scratchpad`. */
    prompt: ChatPromptTemplate;
    /**
     * Whether to invoke the underlying model in streaming mode,
     * allowing streaming of intermediate steps. Defaults to true.
     */
    streamRunnable?: boolean;
};
/**
 * Create an agent that uses OpenAI-style tool calling.
 * @param params Params required to create the agent. Includes an LLM, tools, and prompt.
 * @returns A runnable sequence representing an agent. It takes as input all the same input
 *     variables as the prompt passed in does. It returns as output either an
 *     AgentAction or AgentFinish.
 *
 * @example
 * ```typescript
 * import { AgentExecutor, createOpenAIToolsAgent } from "langchain/agents";
 * import { pull } from "langchain/hub";
 * import type { ChatPromptTemplate } from "@langchain/core/prompts";
 * import { AIMessage, HumanMessage } from "@langchain/core/messages";
 *
 * import { ChatOpenAI } from "@langchain/openai";
 *
 * // Define the tools the agent will have access to.
 * const tools = [...];
 *
 * // Get the prompt to use - you can modify this!
 * // If you want to see the prompt in full, you can at:
 * // https://smith.langchain.com/hub/hwchase17/openai-tools-agent
 * const prompt = await pull<ChatPromptTemplate>(
 *   "hwchase17/openai-tools-agent"
 * );
 *
 * const llm = new ChatOpenAI({
 *   temperature: 0,
 *   modelName: "gpt-3.5-turbo-1106",
 * });
 *
 * const agent = await createOpenAIToolsAgent({
 *   llm,
 *   tools,
 *   prompt,
 * });
 *
 * const agentExecutor = new AgentExecutor({
 *   agent,
 *   tools,
 * });
 *
 * const result = await agentExecutor.invoke({
 *   input: "what is LangChain?",
 * });
 *
 * // With chat history
 * const result2 = await agentExecutor.invoke({
 *   input: "what's my name?",
 *   chat_history: [
 *     new HumanMessage("hi! my name is cob"),
 *     new AIMessage("Hello Cob! How can I assist you today?"),
 *   ],
 * });
 * ```
 */
export declare function createOpenAIToolsAgent({ llm, tools, prompt, streamRunnable, }: CreateOpenAIToolsAgentParams): Promise<AgentRunnableSequence<{
    steps: ToolsAgentStep[];
}, import("@langchain/core/agents").AgentFinish | import("@langchain/core/agents").AgentAction[]>>;