Patch WebMock to print the curl command on disabled net connect. Just copy & paste it to execute.

webmock_curl.rb

module WebMock
  class NetConnectNotAllowedError < Exception
    alias_method :stubbing_instructions_without_curl, :stubbing_instructions

    private

    def stubbing_instructions(request_signature)
      [
        stubbing_instructions_without_curl(request_signature),
        CurlInstructions.new(request_signature).instructions
      ].compact.join("\n\n")
    end

    class CurlInstructions
      def initialize(request_signature)
        @request_signature = request_signature
      end

      def instructions
        "You can get this request with this command: \n\n" + ["curl", method, uri, headers, body].compact.join(" ")
      end

      private

      def method
        return if request_signature.method == :get

        "-X#{request_signature.method}".upcase
      end

      def uri
        request_signature.uri
      end

      def headers
        return if request_signature.headers.empty?

        request_signature.headers.map { |k,v| %(-H #{(k + ": " + v).inspect})}
      end

      def body
        return if request_signature.body.nil?

        "-d #{request_signature.body.inspect}"
      end

      attr_reader :request_signature
    end
  end
end