I have a quick and dirty slack-notify script that I’ve been using for a while. I threw it on GitHub today, and got the idea of proxying a slack. subdomain on my internal network to Slack so I could avoid pasting the webhook everywhere I wanted to use it.

Important: Don’t do this with public DNS! Otherwise, anyone could send to your webhook.

I have a private DNS server running on my network. I have configured slack.priddle.xyz to point to a VM running Nginx, but you can’t access it from the outside world (try it, dig +short slack.priddle.xyz @

Anyway, with the warnings out of the way… I came up with this config (with a little help from this gist):

server {
  server_name _;

  location / {
    proxy_pass https://hooks.slack.com/services/XXXXXXXXX/XXXXXXXXX/XXXXXXXXXXXXXXXXXXXXXXXX;
    proxy_pass_request_headers off;
    proxy_pass_request_body off;
    proxy_redirect off;
    proxy_method POST;
    proxy_set_body $request_body;

Now, instead of doing curl ... https://hooks.slack.com/services/XXXXXXXXX/XXXXXXXXX/XXXXXXXXXXXXXXXXXXXXXXXX, I can just curl ... https://slack.priddle.xyz.