Slack Action

Will send slack messages as action to a specified channel.

Invite "bot" user too the channel if you use token

Bot User OAuth Access Token

Invite the bot to the channel, inside channel write

/invite @BotName

Errors

if error not_in_channel

Invite bot to channel

if error missing_scope

Check authorized action scopes for token

References and Error codes

Post message to slack:

https://api.slack.com/methods/chat.postMessage#errors