Slack MCP Server

Instructions

Implementation Reference

• slack_mcp/server.py:474-488 (handler)

  MCP tool handler function for archiving a Slack channel. Creates a SlackClient instance, calls its archive_channel method, and returns the JSON-formatted result or error.

  @mcp.tool()
  async def archive_channel(channel: str) -> str:
      """
      Archive a Slack channel.
  
      Args:
          channel: Channel ID to archive
      """
      try:
          client = SlackClient()
          result = await client.archive_channel(channel)
          return json.dumps(result, indent=2)
      except Exception as e:
          return json.dumps({"error": str(e)}, indent=2)

• slack_mcp/server.py:196-199 (helper)

  SlackClient helper method that performs the actual Slack API call to archive the specified channel using the conversations.archive endpoint.

  async def archive_channel(self, channel: str) -> Dict[str, Any]:
      """Archive a channel."""
      data = {"channel": channel}
      return await self._make_request("POST", "conversations.archive", json_data=data)

• slack_mcp/server.py:474-474 (registration)

  FastMCP tool registration decorator that registers the archive_channel function as an MCP tool.

  @mcp.tool()