import { createAgent } from "@langchain/agents";
import { ChatOpenAI } from "@langchain/openai";
import { Calculator } from "@langchain/community/tools/calculator";
import {
GoogleCalendarCreateTool,
GoogleCalendarViewTool,
} from "@langchain/community/tools/google_calendar";
export async function run() {
const model = new ChatOpenAI({
temperature: 0,
apiKey: process.env.OPENAI_API_KEY,
model: "gpt-4.1-mini",
});
const googleCalendarParams = {
credentials: {
clientEmail: process.env.GOOGLE_CALENDAR_CLIENT_EMAIL,
privateKey: process.env.GOOGLE_CALENDAR_PRIVATE_KEY,
calendarId: process.env.GOOGLE_CALENDAR_CALENDAR_ID,
},
scopes: [
"https://www.googleapis.com/auth/calendar",
"https://www.googleapis.com/auth/calendar.events",
],
model,
};
const tools = [
new Calculator(),
new GoogleCalendarCreateTool(googleCalendarParams),
new GoogleCalendarViewTool(googleCalendarParams),
];
const calendarAgent = createAgent({
llm: model,
tools,
});
const createInput = `Create a meeting with John Doe next Friday at 4pm - adding to the agenda of it the result of 99 + 99`;
const createResult = await calendarAgent.invoke({
messages: [{ role: "user", content: createInput }],
});
// Create Result {
// output: 'A meeting with John Doe on 29th September at 4pm has been created and the result of 99 + 99 has been added to the agenda.'
// }
console.log("Create Result", createResult);
const viewInput = `What meetings do I have this week?`;
const viewResult = await calendarAgent.invoke({
messages: [{ role: "user", content: viewInput }],
});
// View Result {
// output: "You have no meetings this week between 8am and 8pm."
// }
console.log("View Result", viewResult);
}
