Slack update message

{
  "type": "object",
  "properties": {
    "channel": {
      "type": "string",
      "description": "Channel ID containing the message"
    },
    "ts": {
      "type": "string",
      "description": "Timestamp (ts) of the message to update"
    },
    "text": {
      "type": "string",
      "description": "New message text (supports mrkdwn)"
    }
  },
  "required": [
    "channel",
    "ts",
    "text"
  ],
  "description": "Input schema for the slack__update_message tool."
}