Slack

Create the bot in Slack

1. Open api.slack.com/apps and Create New App for your workspace.
2. In the app settings open Incoming Webhooks and toggle it on.
3. Click Add New Webhook to Workspace, pick the channel, and Authorize.

4. Copy the Webhook URL from the settings page:

   https://hooks.slack.com/services/T00000000/B00000000/xxxxxxxxxxxx
   

Official docs: Sending messages using incoming webhooks

Good to know:

• Messages always go to the channel chosen when the webhook was created; it cannot be changed later.
• Posted messages cannot be deleted. The URL is the credential — Slack revokes leaked ones.
• Plain text up to 40,000 characters, markdown (Block Kit) up to 12,000 characters.
• No file sending; beyond the Webhook URL there is no security setting at all (no secret, keyword or IP allowlist).

Add it in Vibe Seller

1. Open Vibe Seller, go to Settings → Integrations → Chat bots, and click Add Bot;
2. Enter a name (e.g. "Ops alerts") and paste the Webhook URL you just copied — the platform is detected as Slack; the URL alone is the credential, so the form has no security section.

1. Click Save — the bot appears in the list;
2. Click Test on the bot's row: a green line appears and the channel receives the test message:

When a test fails, Slack's real error shows under the row — the usual one is a revoked URL; generate a fresh webhook and paste it back. More error meanings are in Chat bots.