Slack Notifications

🔑 BYO Key — Messaging

Send notifications and alerts to Slack channels via Incoming Webhooks. No Slack API key needed — just the webhook URL.

🔑 Setup Required — Bring Your Own Key This integration requires API credentials. Store them once via setup_integration or the Dashboard Vault — they're encrypted with AES-256-GCM and never exposed.

Required Credentials

slack_webhook_url

Webhook URL

Incoming Webhook URL from api.slack.com/apps → your app → Incoming Webhooks. Format: https://hooks.slack.com/services/T.../B.../xxx

Get your API key at api.slack.com →

Try it with your AI assistant

Once WebsitePublisher is connected to your AI assistant, paste one of these into the chat.

ChatGPT Claude Other assistants

@WebsitePublisher send me a Slack message when someone fills in my contact form

With WebsitePublisher, send me a Slack message when someone fills in my contact form

Endpoints (1)

POST send-notification

Send a message to a Slack channel. Supports plain text and basic Slack mrkdwn formatting (*bold*, _italic_, ~strike~, `code`).

Field	Type	Required	Description
`text`	string	✓ Yes	Message text. Supports Slack mrkdwn: bold, _italic_, ~strike~, `code`, ```code block```, <url\|link text>.

MCP Tool Names

When using this integration through an AI assistant (Claude, ChatGPT, Cursor, etc.), the endpoints are available as MCP tools:

Endpoint	MCP Tool Name
send-notification	`slack-webhook_send_notification`

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