technicalpickles · June 24, 2025 14:00
diff --git a/mcp.rb b/mcp.rb
 require "thor"
 require "fast_mcp"
 require "debug"

 class Thorsty < Thor
  def self.arguments(&block)
  end

  def exit_on_failure?
    true
  end
 end

 class MyCLI < Thorsty
  desc "hello NAME", "say hello to NAME"
  def hello(name, from=nil)
    puts "from: #{from}" if from
    puts "Hello #{name}"
  end


  module Tools
  end
 end

 def capture_output(&block)
  stdout, stderr = StringIO.new, StringIO.new
  $stdout, $stderr = stdout, stderr
  block.call

  # restore normal output
  $stdout, $stderr = STDOUT, STDERR
  [stdout.string, stderr.string]
 end

 def command_to_tool(command)
  tool_class = Class.new(FastMcp::Tool) do
    tool_name command.name
    description command.description
    
    def call
      stdout, _ = capture_output { command.run }
      stdout
    end
  end
  tool_class
 end

 # Create a simple Rack application
 app = lambda do |_env|
  [200, { 'Content-Type' => 'text/html' },
   ['<html><body><h1>Hello from Rack!</h1><p>This is a simple Rack app with MCP middleware.</p></body></html>']]
 end

 debugger

 # Create the MCP middleware
 mcp_app = FastMcp.rack_middleware(
  app,
  name: 'thorsty', version: '1.0.0',
  logger: Logger.new($stdout)
 ) do |server|
  MyCLI.commands.each do |name, command|
    puts "Command: #{name}"
    puts "Description: #{command.description}"
    command.arguments.each do |arg|
      puts "  Argument: #{arg.name} (required: #{arg.required}, type: #{arg.type})"
    end

    tool = command_to_tool(MyCLI, command)
    server.register_tool(tool)
  end
 end

 # Run the Rack application with Puma
 puts 'Starting Rack application with MCP middleware on http://localhost:9292'
 puts 'MCP endpoints:'
 puts '  - http://localhost:9292/mcp/sse (SSE endpoint)'
 puts '  - http://localhost:9292/mcp/messages (JSON-RPC endpoint)'
 puts 'Press Ctrl+C to stop'

 # Use the Puma server directly instead of going through Rack::Handler
 require 'puma'
 require 'puma/configuration'
 require 'puma/launcher'

 app = Rack::Builder.new { run mcp_app }
 config = Puma::Configuration.new do |user_config|
  user_config.bind 'tcp://localhost:9292'
  user_config.app app
 end

 launcher = Puma::Launcher.new(config)
 launcher.run
	require "thor"
	require "fast_mcp"
	require "debug"

	class Thorsty < Thor
	def self.arguments(&block)
	end

	def exit_on_failure?
	true
	end
	end

	class MyCLI < Thorsty
	desc "hello NAME", "say hello to NAME"
	def hello(name, from=nil)
	puts "from: #{from}" if from
	puts "Hello #{name}"
	end


	module Tools
	end
	end

	def capture_output(&block)
	stdout, stderr = StringIO.new, StringIO.new
	$stdout, $stderr = stdout, stderr
	block.call

	# restore normal output
	$stdout, $stderr = STDOUT, STDERR
	[stdout.string, stderr.string]
	end

	def command_to_tool(command)
	tool_class = Class.new(FastMcp::Tool) do
	tool_name command.name
	description command.description

	def call
	stdout, _ = capture_output { command.run }
	stdout
	end
	end
	tool_class
	end

	# Create a simple Rack application
	app = lambda do \|_env\|
	[200, { 'Content-Type' => 'text/html' },
	['<html><body><h1>Hello from Rack!</h1><p>This is a simple Rack app with MCP middleware.</p></body></html>']]
	end

	debugger

	# Create the MCP middleware
	mcp_app = FastMcp.rack_middleware(
	app,
	name: 'thorsty', version: '1.0.0',
	logger: Logger.new($stdout)
	) do \|server\|
	MyCLI.commands.each do \|name, command\|
	puts "Command: #{name}"
	puts "Description: #{command.description}"
	command.arguments.each do \|arg\|
	puts " Argument: #{arg.name} (required: #{arg.required}, type: #{arg.type})"
	end

	tool = command_to_tool(MyCLI, command)
	server.register_tool(tool)
	end
	end

	# Run the Rack application with Puma
	puts 'Starting Rack application with MCP middleware on http://localhost:9292'
	puts 'MCP endpoints:'
	puts ' - http://localhost:9292/mcp/sse (SSE endpoint)'
	puts ' - http://localhost:9292/mcp/messages (JSON-RPC endpoint)'
	puts 'Press Ctrl+C to stop'

	# Use the Puma server directly instead of going through Rack::Handler
	require 'puma'
	require 'puma/configuration'
	require 'puma/launcher'

	app = Rack::Builder.new { run mcp_app }
	config = Puma::Configuration.new do \|user_config\|
	user_config.bind 'tcp://localhost:9292'
	user_config.app app
	end

	launcher = Puma::Launcher.new(config)
	launcher.run