Debug POSTs using an Express App

Created: 04 December 2020

Updated: 03 September 2023

Sometimes it’s useful to have an endpoint that you can use to debug data that’s being POSTed to an application

You can make use of the following express.js app to log your application’s POST requests:

View Code

const express = require('express')
const app = express()

// parse json
app.use(express.json())

// GET endpoint to check uptime
app.get('/', (req, res) => {
  res.json({ data: 'hello' })
})

// POST endpointthat logs request body
app.post('/', (req, res) => {
  console.log(req.body)
  res.json(req.body)
})

// listen for requests
const listener = app.listen(process.env.PORT, () => {
  console.log('listening on port ' + listener.address().port)
})