A message was sent to a channel
{
"type": "message",
"subtype": "bot_message",
"ts": "1358877455.000010",
"text": "Pushing is the answer",
"bot_id": "BB12033",
"username": "github",
"icons": {}
}
In classic Slack apps, the bot_message event is sent when a message is sent to a channel by an integration "bot". It is like a normal user message, except it has no associated user. With current Slack apps, also known as granular bot permissions (GBP) apps, you can detect if a message was sent by a bot by the presence of the bot_id and bot_profile fields in the event payload.
The bot_id tells you which bot sent this message. The username and icon to use can be looked up by passing this to bots.info. Some bot_message events also include username or icons properties. If present, these override the default username or icon for this bot.
When an event occurs, we will send an HTTP POST request to your Request URL. The outer payload is uniform across all Events API methods, and contains fields like team_id and event. Learn more