Send WhatsApp Messages from Node.js in 3 Lines of Code

npm install wasaas

import { Wasaas } from "wasaas";

const client = new Wasaas({ apiKey: process.env.WASAAS_API_KEY! });

await client.messages.sendText({
  sessionId: "my-session",
  to: "966501234567",
  message: "Your order #1234 has shipped! 🚚",
});

await client.messages.sendImage({
  sessionId: "my-session",
  to: "966501234567",
  imageUrl: "https://example.com/invoice.png",
  caption: "Invoice #1234",
});

import { readFileSync } from "fs";

const base64 = readFileSync("./invoice.pdf").toString("base64");

await client.messages.sendDocument({
  sessionId: "my-session",
  to: "966501234567",
  base64,
  filename: "invoice-1234.pdf",
  mime: "application/pdf",
  caption: "Your invoice is attached",
});

const result = await client.numbers.validate({
  sessionId: "my-session",
  phone: "966501234567",
});
// { exists: true, phone: "966501234567" }

import express from "express";
import { Wasaas } from "wasaas";

const app = express();
const client = new Wasaas({ apiKey: process.env.WASAAS_API_KEY! });

app.post("/notify-order", express.json(), async (req, res) => {
  const { phone, orderId } = req.body;

  await client.messages.sendText({
    sessionId: process.env.WASAAS_SESSION_ID!,
    to: phone,
    message: `Order #${orderId} confirmed! We'll notify you when it ships.`,
  });

  res.json({ ok: true });
});

// CommonJS
const { Wasaas } = require("wasaas");
const client = new Wasaas({ apiKey: process.env.WASAAS_API_KEY });