ebay-token-example.js

const axios = require("axios");

axios.request({
  url: "/identity/v1/oauth2/token",
  method: "POST",
  baseURL: "https://api.sandbox.ebay.com/",
  auth: {
    username: "", // eBay client id
    password: "" // eBay client secret
  },
  headers: { 'content-type': 'application/x-www-form-urlencoded' },
  data: {
    "grant_type": "client_credentials",
    "scope": "https://api.ebay.com/oauth/api_scope"    
  }
}).then(res => {
  console.log(res);  
}).catch(error => {
    console.log(error)
 })