Local Tunnel

QStash requires a publicly available API to send messages to. The recommended approach is to run a development server locally and use it for development purposes.

Alternatively, you can set up a local tunnel to expose your API, enabling QStash to send requests directly to your application during development.

localtunnel.me

localtunnel.me is a free service to provide a public endpoint for your local development.

It's as simple as running

npx localtunnel --port 3000

replacing 3000 with the port your application is running on.

This will give you a public URL like https://good-months-leave.loca.lt which can be used as your QStash URL.

If you run into issues, you may need to set the Upstash-Forward-bypass-tunnel-reminder header to any value to bypass the reminder message.

ngrok

ngrok is a free service, that provides you with a public endpoint and forwards all traffic to your localhost.

Sign up

Create a new account on dashboard.ngrok.com/signup and follow the instructions to download the ngrok CLI and connect your account:

ngrok config add-authtoken XXX

Start the tunnel

Choose the port where your application is running. Here I'm forwarding to port 3000, because Next.js is using it.

$ ngrok http 3000Session Status                onlineAccount                       Andreas Thomas (Plan: Free)Version                       3.1.0Region                        Europe (eu)Latency                       -Web Interface                 http://127.0.0.1:4040Forwarding                    https://e02f-2a02-810d-af40-5284-b139-58cc-89df-b740.eu.ngrok.io -> http://localhost:3000Connections                   ttl     opn     rt1     rt5     p50     p90                              0       0       0.00    0.00    0.00    0.00

Publish a message

Now copy the Forwarding url and use it as destination in QStash. Make sure to add the path of your API at the end. (/api/webhooks in this case)

curl -XPOST \    -H 'Authorization: Bearer XXX' \    -H "Content-type: application/json" \    -d '{ "hello": "world" }' \    'https://qstash.upstash.io/v2/publish/https://e02f-2a02-810d-af40-5284-b139-58cc-89df-b740.eu.ngrok.io/api/webhooks'

Debug

In case messages are not delivered or something else doesn't work as expected, you can go to http://127.0.0.1:4040 to see what ngrok is doing.