Badour continuously monitors Mastodon for new statuses. Since Mastodon is a federated network, it can't see all statuses across the network. It currently only monitors the public federated timeline of the official instance: mastodon.social.
If the Mastodon instance you'd like to monitor also has a public federated timeline, but is not included in our list yet, feel free to reach out and we'll see if we can include it.
Badour scans the body of Mastodon status messages for keywords.