Slack

Category: Cloud Status: base

Sends messages to Slack channels via Incoming Webhooks. The connector stores your saved webhooks, message templates, and send history; each message is delivered with a JSON POST to the selected webhook URL.

Connection Settings

No connection fields required. The connector is created automatically with a local state storage path — webhooks and templates are managed from the connector UI after creation.

How to Get a Webhook URL

1. Open https://api.slack.com/apps and click Create New App → From scratch.
2. Enter an app name (e.g. DataPlayer Notifications) and select your workspace.
3. In the app settings, open Features → Incoming Webhooks and switch Activate Incoming Webhooks to On.
4. Click Add New Webhook to Workspace, choose the target channel, and click Allow.
5. Copy the generated URL — it looks like https://hooks.slack.com/services/T00000000/B00000000/XXXXXXXXXXXXXXXXXXXXXXXX.

Each webhook URL is bound to one channel. To post into several channels, repeat step 4 for each channel and add every URL as a separate webhook in the connector.

Treat the webhook URL as a secret — anyone who has it can post to the channel.

Sending Messages

• webhook_url — target Incoming Webhook URL (selects the channel)
• title — optional; prepended to the message as the first line
• message — message text; Slack emoji codes are supported (:fire:, :warning:, :white_check_mark:, :red_circle:)
• attachments — optional list of Slack attachment objects (color, fields, footer, etc.)

The connector UI also supports:

• Webhooks — a named list of saved webhook URLs
• Templates — reusable title/message presets
• History — recent sends with one-click resend

External Links

• https://api.slack.com/messaging/webhooks (Sending messages using Incoming Webhooks)
• https://api.slack.com/apps (Manage Slack apps)