Allow one slack workspace to be connected to multiple spacelift accounts

Workaround:

1. Create an Incoming Webhook in Slack

1. Go to your Slack workspace → https://api.slack.com/apps

2. Click Create New App → From scratch.

3. Give it a name (e.g. Spacelift Notifications) and select your workspace.

4. Under Features, select Incoming Webhooks.

5. Toggle Activate Incoming Webhooks → On.

6. Click Add New Webhook to Workspace → choose the channel where messages should post (or create a new one).

7. Copy the Webhook URL (it’ll look like: https://hooks.slack.com/services/T00000000/B00000000/XXXXXXXXXXXXXXXXXXXXXXXX).

2. Add the Slack Webhook to Spacelift
In Spacelift:

1. Go to Integrations → Observibility → Webhooks.

2. Click Add Webhook and name it like slack-notifications.

3. For URL, paste the Slack Incoming Webhook URL you just copied.

4. Save.

This creates a named webhook endpoint that can be referenced from your webhook policy using its endpoint.id.3. Create a Notification Policy
In Spacelift:

1. Go to Policies

2. Create a new notification Policy

3. I used the following:

package spacelift

webhook[{"endpoint_id": endpoint.id, "payload": payload}] {
  endpoint := input.webhook_endpoints[_]
  endpoint.id == "slack-notifications" 

  run := input.run_updated.run
  stack := input.run_updated.stack

  # only send when tracked runs finish
  run.type == "TRACKED"
  run.state == "FINISHED"

  payload := {
    "text": sprintf(
      ":rocket: *Spacelift run finished!*\n• *Stack:* %s\n• *State:* %s\n• *Branch:* %s\n• *Commit:* <%s|%s>\n• *Run URL:* <%s|View in Spacelift>",
      [
        stack.name,
        run.state,
        run.branch,
        run.commit.url,
        run.commit.message,
        input.run_updated.urls.run
      ]
    )
  }
}

Provides the following message in the selected slack channel: