Simple Windows Service for monitoring movements in crypto currency prices that publishes messages to a Slack channel.

The Windows Service opens a Socket IO connection to the CoinCap api and receives notifications of changes to crypto currency prices. You the user send text commands to the service to request notification of a price movement outside of a specified limit and the service will notify you via a Slack webhook when this occurs.

• .Net Framework 4.6.1
• Visual Studio 2015 - C# 6
• A slack team for testing (create one for free at slack.com)
• Open TCP port 144 (more on this below)

The Slack team should have channel called #commands and you will need to make another in the format alerts- followed by your username. Don't worry if your username is too long and gets truncated it should still work. Commands with the exception of 'Restart' will only apply to you, so your friends in the same team will not be affected by your comamnds.

Suggested settings for Slack:

• Disable push notifications for the commands channel.
• Enable push notifications for your alerts-.... channel.

All commands start with the initials CJ and are case-insensitive. Beware your phones auto-correct system!

CJ Monitor XMR 5m 0.5

The above requests a price notification for the XMR currency (Monero) if the price moves more than half a percent +/- over a period of five minutes.

Re-issue a command for the same currency and window with a different threshold will replace the previous one.

CJ Monitor XMR 5m 1

The above adjusts the previous notification so that the threshold is now one percent over five minutes.

When getting started try setting the threshold low (even zero) to see how the notifications work.

Issue the following command to stop receiving notifications without removing your configured monitoring

CJ Pause

To resume:

CJ Resume

CJ Monitor XMR 5m x

Note the 'x' as the threshold here. This tells the system to remove the monitoring for the five minute window.

CJ Clear XMR

CJ Clear

CJ Status

CJ List

CJ Restart

To allow the service to send Slack messages you will need to create both an incoming webhook and an outgoing webhook - this can be done on the slack website at: https:// [teamname] .slack.com/apps/build/custom-integration

You will need to copy/paste the incoming Webhook URL into the project's app.config file.

The outgoing webhook should be configured as follows

Channel #commands
Trigger Word(s) leave this blank
URL(s) set this to your public IP address port 144 i.e. http://6.23.4.76:144
customise the remaining properties as you wish

Ensure that port 144 is forwarded on your router and unblocked in your firewall.

Be careful not to breach the Slack Terms of Service - especially if you set multiple monitors with short windows - you use this software at your own risk.