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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],
verbose: true,
});

// 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");
});