Slack MCP Server

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slack_post_message

Send a message to a specific Slack channel by specifying the channel ID and message text, enabling direct communication within Slack workspaces.

Instructions

Post a new message to a Slack channel

Input Schema

Name	Required	Description	Default
`channel_id`	Yes	The Channel ID to post the message to
`text`	Yes	The message text to post

Input Schema (JSON Schema)

{
  "properties": {
    "channel_id": {
      "description": "The Channel ID to post the message to",
      "type": "string"
    },
    "text": {
      "description": "The message text to post",
      "type": "string"
    }
  },
  "required": [
    "channel_id",
    "text"
  ],
  "type": "object"
}

Install Server

HTTP connection URL

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