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*   JSON Agent Toolkit

JSON Agent Toolkit
==================

This example shows how to load and use an agent with a JSON toolkit.

tip

See [this section for general instructions on installing integration packages](/v0.2/docs/how_to/installation#installing-integration-packages).

*   npm
*   Yarn
*   pnpm

    npm install @langchain/openai

    yarn add @langchain/openai

    pnpm add @langchain/openai

    import * as fs from "fs";import * as yaml from "js-yaml";import { OpenAI } from "@langchain/openai";import { JsonSpec, JsonObject } from "langchain/tools";import { JsonToolkit, createJsonAgent } from "langchain/agents";export const run = async () => {  let data: JsonObject;  try {    const yamlFile = fs.readFileSync("openai_openapi.yaml", "utf8");    data = yaml.load(yamlFile) as JsonObject;    if (!data) {      throw new Error("Failed to load OpenAPI spec");    }  } catch (e) {    console.error(e);    return;  }  const toolkit = new JsonToolkit(new JsonSpec(data));  const model = new OpenAI({ temperature: 0 });  const executor = createJsonAgent(model, toolkit);  const input = `What are the required parameters in the request body to the /completions endpoint?`;  console.log(`Executing with input "${input}"...`);  const result = await executor.invoke({ input });  console.log(`Got output ${result.output}`);  console.log(    `Got intermediate steps ${JSON.stringify(      result.intermediateSteps,      null,      2    )}`  );};

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