Class: Slack::MCPServer

Inherits:
Object
  • Object
show all
Defined in:
lib/utilities/slack/mcp.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ MCPServer

Returns a new instance of MCPServer.



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# File 'lib/utilities/slack/mcp.rb', line 10

def initialize
  # Defer SlackTool initialization until actually needed
  @slack_tool = nil
  @tools = {
    "test_connection" => {
      name: "test_connection",
      description: "Test the Slack API connection",
      inputSchema: {
        type: "object",
        properties: {},
        required: []
      }
    },
    "list_channels" => {
      name: "list_channels",
      description: "List available Slack channels. When asked to list ALL channels, automatically retrieve all pages by calling this tool multiple times with the cursor parameter to get complete results.",
      inputSchema: {
        type: "object",
        properties: {
          limit: {
            type: "number",
            description: "Maximum number of channels to return (default: 100, max: 1000)"
          },
          cursor: {
            type: "string",
            description: "Cursor for pagination. Use the next_cursor from previous response to get next page"
          },
          exclude_archived: {
            type: "boolean",
            description: "Exclude archived channels from results (default: true)"
          }
        },
        required: []
      }
    },
    "post_message" => {
      name: "post_message",
      description: "Post a message to a Slack channel",
      inputSchema: {
        type: "object",
        properties: {
          channel: {
            type: "string",
            description: "The Slack channel name (with or without #)"
          },
          text: {
            type: "string",
            description: "The message text to post"
          },
          username: {
            type: "string",
            description: "Optional custom username for the message"
          },
          thread_ts: {
            type: "string",
            description: "Optional timestamp of parent message to reply to"
          }
        },
        required: ["channel", "text"]
      }
    }
  }
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/utilities/slack/mcp.rb', line 74

def run
  # Disable stdout buffering for immediate response
  $stdout.sync = true

  # Log startup to file instead of stdout to avoid protocol interference
  Mcpeasy::Config.ensure_config_dirs
  File.write(Mcpeasy::Config.log_file_path("slack", "startup"), "#{Time.now}: Slack MCP Server starting on stdio\n", mode: "a")
  while (line = $stdin.gets)
    handle_request(line.strip)
  end
rescue Interrupt
  # Silent shutdown
rescue => e
  # Log to a file instead of stderr to avoid protocol interference
  File.write(Mcpeasy::Config.log_file_path("slack", "error"), "#{Time.now}: #{e.message}\n#{e.backtrace.join("\n")}\n", mode: "a")
end