Slack Invite Automation

Yet another hack on the internets.


  1. Slack expires manually generated invitations to the Slackdump slack.
  2. Calling the users.admin.invite requires the Slack with Enterprise plan.

So I did the right thing and wrote the Slack Inviter that uses the client token/cookie pair using the fork of slack library that I created for the Slackdump.

Demo: Slackdump Slack invitation

The invitations that your guests receive are from the actual user (that means YOU), i.e. “Scumbag Steve has invited you to work with them in Slack”.

Possible improvements:

  • my HTML skills are super sub-optimal: it’s all Web GET/POST, almost no JavaScript.
  • error handling – just GET request to the root path with “e=” param.
  • Docker container.
  • this project really could use some tests.
  • Actually add the database (right now the database handle is there, but is not used).
  • Heroku deployment, the magic purple button.


Environment Variables

Configuration variables can be set in environment, or defined in an .env file.

Supported environment variables:

Variable Description
CONFIG_FILE configuration file with template values.
TOKEN Slack xoxc- token.
COOKIE Slack xoxd- cookie value.
ADDR address (or hostname) for http listener.
PORT port for http listener.
RECAPTCHA_KEY Google ReCaptcha V3 key (optional).
RECAPTCHA_SECRET Google ReCaptcha V3 secret (optional).

Configuration file

Configuration file is a yaml file and allows to define the template values, i.e. the website url, and slack community/workspace name, that will be shown to the user accessing the service.

Configuration file supports environment variables. To use an environment variable as a value, prefix text with a ‘$’ sign, optionally enclosing the environment variable in curly braces, “{” and “}”. Well, you probably already know the drill (see slack_workspace variable in the Example).

Sample configuration file:

slack_workspace: ${WORKSPACE_NAME}
submit_button: Gimme, gimme!
copyright: 2022 Maybe Peter

Variables description:

Parameter Description
slack_workspace Slack workspace name
submit_button Text shown on the submit button.
website URL of your website, shown in footer.
copyright Copyright message, shown in footer.
telegram_link Telegram channel/group URL. Shown in footer.
github_link Github URL, i.e. to your project. Shown in footer.

Quick Start

  1. Download from releases.
  2. Create a config file (see slackdump.yaml for example).
  3. Set your environment


View Github