Slack Notifications

Slack Notifications

Send structured status updates from the agent to a designated Slack channel. This skill is outbound only — it sends messages but does not read from Slack.

How to use

When the user asks you to notify a team or send a Slack message, follow these steps:

1. Compose the message. Take the user's input and format it as a clear, concise status update.

1. Format as a Slack Block Kit payload. Structure the message with a timestamp and agent attribution:

curl -X POST -H "Content-Type: application/json" \
  -d "{
    \"blocks\": [
      {
        \"type\": \"section\",
        \"text\": {
          \"type\": \"mrkdwn\",
          \"text\": \"MESSAGE_CONTENT\"
        }
      },
      {
        \"type\": \"context\",
        \"elements\": [
          {
            \"type\": \"mrkdwn\",
            \"text\": \"Sent by OpenClaw agent at TIMESTAMP\"
          }
        ]
      }
    ]
  }" \
  "$SLACK_WEBHOOK_URL"

1. Confirm delivery. Report the HTTP status code back to the user. A 200 response means the message was delivered successfully.

Constraints

• Only send messages to the webhook URL configured in the SLACK_WEBHOOK_URL environment variable.
• Do NOT attempt to read messages from Slack.
• Do NOT store the webhook URL in any file — it must only be accessed from the environment variable.
• All network calls go to hooks.slack.com only.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: TribeAI
• Source: TribeAI/tribe-claudeclaw-sec-enterprise
• License: Apache-2.0

Install and usage instructions live in the source repository linked above.