Agents

A built-in agent that can take decisions and reasoning based on the tools provided to it.

OpenAI Agent

import { FunctionTool, OpenAIAgent } from "llamaindex";

// Define a function to sum two numbers
function sumNumbers({ a, b }: { a: number; b: number }): number {
  return a + b;
}

// Define a function to divide two numbers
function divideNumbers({ a, b }: { a: number; b: number }): number {
  return a / b;
}

// Define the parameters of the sum function as a JSON schema
const sumJSON = {
  type: "object",
  properties: {
    a: {
      type: "number",
      description: "The first number",
    },
    b: {
      type: "number",
      description: "The second number",
    },
  },
  required: ["a", "b"],
};

// Define the parameters of the divide function as a JSON schema
const divideJSON = {
  type: "object",
  properties: {
    a: {
      type: "number",
      description: "The dividend to divide",
    },
    b: {
      type: "number",
      description: "The divisor to divide by",
    },
  },
  required: ["a", "b"],
};

async function main() {
  // Create a function tool from the sum function
  const sumFunctionTool = new FunctionTool(sumNumbers, {
    name: "sumNumbers",
    description: "Use this function to sum two numbers",
    parameters: sumJSON,
  });

  // Create a function tool from the divide function
  const divideFunctionTool = new FunctionTool(divideNumbers, {
    name: "divideNumbers",
    description: "Use this function to divide two numbers"
    parameters: divideJSON,
  });

  // Create an OpenAIAgent with the function tools
  const agent = new OpenAIAgent({
    tools: [sumFunctionTool, divideFunctionTool],
  });

  // Chat with the agent
  const response = await agent.chat({
    message: "How much is 5 + 5? then divide by 2",
  });

  // Print the response
  console.log(String(response));
}

main().then(() => {
  console.log("Done");
});