Slack

Slack uses an incoming webhook from an app you own. Gabier posts a coloured attachment, so the message carries the same information as the Discord embed and still reads as plain text in a push notification.

Create the webhook#

1. Create an app at api.slack.com/apps → Incoming Webhooks → turn it on.
2. Add New Webhook to Workspace, pick the channel, copy the URL.
3. Put it in the config, or export GABIER_SLACK_WEBHOOK, then run gabier check.

[slack]
webhook_url = "https://hooks.slack.com/services/T000/B000/xxxx"
username = "Gabier"
ping = "<!channel>"
ping_on_accepted = false
ping_on_failure = true

Pings#

Slack has its own escape syntax, and it must be written exactly like this — a plain @thibault does not resolve:

A member ID is under the member’s profile → More → Copy member ID.

As on Discord, ping_on_accepted and ping_on_failure decide when it fires, and both default to false. The ping is only ever put in the message text when you configured one explicitly, so a log line can never turn into a channel-wide mention.

Running both destinations#

[discord] and [slack] can both be present. Every notification then goes to both, independently — if one is down, the other still gets through, and gabier check tells you which is which:

$ sudo -u gabier gabier check
discord   https://discord.com/api/webhooks/123/abcd…
          joignable
slack     https://hooks.slack.com/services/T000/B000/xxxx…
          ✗ channel_not_found
1 destination(s) à corriger

If Slack replies with an error#

gabier check prints Slack’s response verbatim, which is the fastest way to see which of these it is.