There are many ways to wake your OctoBot up and make it do something, one of them is using a webhook. With a webhook, you can automatically send messages to your OctoBot from any website supporting this system. https://www.tradingview.com is one of them.
In order to be able to receive the webhook's message, OctoBot has to expose an API to the web, for this it uses https://ngrok.com/ that acts as a secure intermediary between the internet and your OctoBot.
Setting up your OctoBot's webhook
In OctoBot configuration, add the webhook service.
To set up your webhook configuration
Option 1: If your OctoBot is not exposed to the Internet you have to :
: - enable ngrok - create an account on https://ngrok.com/ - enter your ngrok token into your OctoBot's webhook service configuration.
Option 2: If your OctoBot is exposed to the Internet you can disable ngrok and set the listening port and ip for the webhook
Activate a tentacle using a webhook service (like the trading view signals trading mode).
Restart your OctoBot.
The webhook address will be displayed on your OctoBot configuration and printed in your logs.
You can use ngrok with a free account, the only drawback of having a free version is that your webhook address will change at every OctoBot restart, you will have to update it on your message sender (like https://www.tradingview.com)