diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8fc92d4..2893914 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 # Unreleased
 
+- Async API requests.
 - One more description for StaleChat error.
 - edit_message_* methods.
 - API methods from 2016-10-03 update
diff --git a/README.md b/README.md
index 7d04efd..957c1be 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,8 @@ Package contains:
 - Middleware and routes helpers for production env.
 - Poller with automatic source-reloader for development env.
 - Rake tasks to update webhook urls.
+- __[Async mode](#async-mode)__ for Telegram and/or Botan API.
+  Let the queue adapter handle network errors!
 
 Here is sample [telegram_bot_app](https://github.com/telegram-bot-rb/telegram_bot_app)
 with session, keyboards and inline queries.
@@ -354,11 +356,11 @@ or just add `botan` key in `secrets.yml`:
 Access to Botan client with `bot.botan`.
 Use `bot.botan.track(event, uid, payload)` to track events.
 
-There are some helpers for controllers in `Telegram::Bot::UpdatesController::Botan`:
+There are some helpers for controllers in `Telegram::Bot::Botan::ControllerHelpers`:
 
 ```ruby
 class Telegram::WebhookController < Telegram::Bot::UpdatesController
-  include Telegram::Bot::UpdatesController::Botan
+  include Telegram::Bot::Botan::ControllerHelpers
 
   # This will track with event: action_name & data: payload
   before_action :botan_track_action
@@ -375,6 +377,33 @@ end
 
 There is no stubbing for botan clients, so don't set botan token in tests.
 
+### Async mode
+
+There is built in support for async requests using ActiveJob. Without Rails
+you can implement your own worker class to handle such requests. This allows:
+
+- Process updates very fast, without waiting for telegram and botan responses.
+- Handle and retry network and other errors with queue adapter.
+- ???
+
+Instead of performing request instantly client serializes it, pushes to queue,
+and immediately return control back. The job is then fetched with a worker
+and real API request is performed. And this all is absolutely transparent for the app.
+
+To enable this mode add `async: true` to bot's and botan's config.
+For more information and custom configuration check out
+[docs](http://www.rubydoc.info/github/telegram-bot-rb/telegram-bot/master/Telegram/Bot/Async) or
+[source](https://github.com/telegram-bot-rb/telegram-bot/blob/master/lib/telegram/bot/async.rb).
+
+Be aware of some limitations:
+
+- Client will not return API response.
+- Sending files is not available in async mode [now],
+  because them can not be serialized.
+
+To disable async mode for the block of code use `bot.async(false) { bot.send_photo }`.
+Yes, it's threadsafe too.
+
 ## Development
 
 After checking out the repo, run `bin/setup` to install dependencies.
diff --git a/lib/telegram/bot.rb b/lib/telegram/bot.rb
index 69557e0..72f2400 100644
--- a/lib/telegram/bot.rb
+++ b/lib/telegram/bot.rb
@@ -27,9 +27,12 @@ module Telegram
       end
     end
 
+    autoload :Async,              'telegram/bot/async'
     autoload :Botan,              'telegram/bot/botan'
     autoload :Client,             'telegram/bot/client'
     autoload :ClientStub,         'telegram/bot/client_stub'
+    autoload :DebugClient,        'telegram/bot/debug_client'
+    autoload :Initializers,       'telegram/bot/initializers'
     autoload :Middleware,         'telegram/bot/middleware'
     autoload :UpdatesController,  'telegram/bot/updates_controller'
     autoload :UpdatesPoller,      'telegram/bot/updates_poller'
diff --git a/lib/telegram/bot/async.rb b/lib/telegram/bot/async.rb
new file mode 100644
index 0000000..f97d862
--- /dev/null
+++ b/lib/telegram/bot/async.rb
@@ -0,0 +1,162 @@
+module Telegram
+  module Bot
+    # Telegram & Botan clients can perform requests in async way with
+    # any job adapter (ActiveJob by default). Using Rails you don't need any
+    # additional configuration. However you may want to enable async requests
+    # by default with `async: true` in `secrets.yml`. Botan client doesn't inherit
+    # async setting from client and must be configured separately.
+    #
+    #   telegram:
+    #     bots:
+    #       chat_async:
+    #         token: secret
+    #         async: true # enable async mode for client
+    #         botan: botan_token # in this way botan will not be async
+    #         botan: # in this way - it's in async mode
+    #           token: botan_token
+    #           async: true
+    #
+    # Without Rails To start using async requests
+    # initialize client with `id` kwarg and make sure the client is
+    # accessible via `Teletgram.bots[id]` in job worker. Or just use
+    # `Telegram.bots_config=` for configuration.
+    #
+    # Being in async mode `#request` enqueues job instead to perform
+    # http request instead of performing it directly.
+    # Async behavior is controlled with `#async=` writer
+    # and can be enabled/disabled for the block with `#async`:
+    #
+    #   client = Telegram::Bot::Client.new(**config, async: true)
+    #   client.send_message(message)
+    #   client.async(false) { client.send_message(other_one) }
+    #
+    # `#async=` sets global value for all threads,
+    # while `#async(val, &block)` is thread-safe.
+    #
+    # It can be set with custom job class or classname. By default it defines
+    # job classes for every client class, inherited from ApplicationRecord, which
+    # can be accessed via `.default_async_job`. You can integrate it with any
+    # other job provider by defining a class with `.perform_later(bot_id, *args)`
+    # method. See Async::Job for implemetation.
+    module Async
+      # Used to track missing key in a hash in local variable.
+      MISSING_VALUE = Object.new.freeze
+
+      module Job
+        class << self
+          def included(base)
+            base.singleton_class.send :attr_accessor, :client_class
+          end
+        end
+
+        def perform(client_id, *args)
+          client = self.class.client_class.wrap(client_id.to_sym)
+          client.async(false) { client.request(*args) }
+        end
+      end
+
+      module ClassMethods
+        def default_async_job
+          @default_async_job ||= begin
+            begin
+              ApplicationJob
+            rescue NameError
+              raise 'Define ApplicationJob class or setup #async= with custom job class'
+            end
+            klass = Class.new(ApplicationJob) { include Job }
+            klass.client_class = self
+            const_set(:AsyncJob, klass)
+          end
+        end
+
+        # This is used in specs.
+        def default_async_job=(val)
+          @default_async_job = val
+          remove_const(:AsyncJob) if const_defined?(:AsyncJob, false)
+        end
+
+        # Prepares argments for async job. ActiveJob doesn't support
+        # Symbol in argumens. Also we can encode json bodies only once here,
+        # so it would not be unnecessarily serialized-deserialized.
+        #
+        # This is stub method, which returns input. Every client class
+        # must prepare args itself.
+        def prepare_async_args(*args)
+          args
+        end
+
+        # Returns default_async_job if `true` is given,
+        # treats String as a constant name, or bypasses any other values.
+        def prepare_async_val(val)
+          case val
+          when true then default_async_job
+          when String then Object.const_get(val)
+          else val
+          end
+        end
+      end
+
+      class << self
+        def prepended(base)
+          base.extend(ClassMethods)
+        end
+
+        # Transforms symbols to strings in hash values.
+        def prepare_hash(hash)
+          return hash unless hash.is_a?(Hash)
+          hash = hash.dup
+          hash.each { |key, val| hash[key] = val.to_s if val.is_a?(Symbol) }
+        end
+
+        # Thread-local hash to store async config for every client.
+        def thread_store
+          Thread.current[:telegram_bot_async] ||= {}
+        end
+      end
+
+      attr_reader :id
+
+      def initialize(*, id: nil, async: nil, **)
+        @id = id
+        self.async = async
+        super
+      end
+
+      # Sets default async value for all threads.
+      # Uses `self.class.prepare_async_val` to prepare value.
+      def async=(val)
+        @async = self.class.prepare_async_val(val)
+      end
+
+      # Sets async value in a thread-safe way for the block.
+      # Uses `self.class.prepare_async_val` to prepare value.
+      #
+      # If no block is given returns previously set value or the global one,
+      # set by #async=.
+      def async(val = true)
+        thread_key = object_id
+        thread_store = Async.thread_store
+        return thread_store.fetch(thread_key) { @async } unless block_given?
+        begin
+          old_val = thread_store.fetch(thread_key) { MISSING_VALUE }
+          thread_store[thread_key] = self.class.prepare_async_val(val)
+          yield
+        ensure
+          if MISSING_VALUE == old_val
+            thread_store.delete(thread_key)
+          else
+            thread_store[thread_key] = old_val
+          end
+        end
+      end
+
+      # Uses job if #async is set.
+      def request(*args)
+        job_class = async
+        return super unless job_class
+        raise 'Can not enqueue job without client id' unless id
+        job_class.perform_later(id.to_s, *self.class.prepare_async_args(*args))
+      end
+    end
+  end
+end
diff --git a/lib/telegram/bot/botan.rb b/lib/telegram/bot/botan.rb
index 9c97a3e..75b3697 100644
--- a/lib/telegram/bot/botan.rb
+++ b/lib/telegram/bot/botan.rb
@@ -3,24 +3,37 @@ module Telegram
     class Botan
       TRACK_URI = 'https://api.botan.io/track'.freeze
 
+      autoload :ClientHelpers, 'telegram/bot/botan/client_helpers'
+      autoload :ControllerHelpers, 'telegram/bot/botan/controller_helpers'
       class Error < Bot::Error; end
 
+      extend Initializers
+      prepend Async
       include DebugClient
 
+      class << self
+        def by_id(id)
+          Telegram.botans[id]
+        end
+
+        def prepare_async_args(method, uri, query = {}, body = nil)
+          [method.to_s, uri.to_s, Async.prepare_hash(query), body]
+        end
+      end
+
       attr_reader :client, :token
 
-      def initialize(token)
+      def initialize(token = nil, **options)
         @client = HTTPClient.new
-        @token = token
+        @token = token || options[:token]
       end
 
       def track(event, uid, payload = {})
-        res = http_request(
-          :post,
-          TRACK_URI,
-          {token: token, name: event, uid: uid},
-          payload.to_json,
-        )
+        request(:post, TRACK_URI, {name: event, uid: uid}, payload.to_json)
+      end
+
+      def request(method, uri, query = {}, body = nil)
+        res = http_request(method, uri, query.merge(token: token), body)
         status = res.status
         return JSON.parse(res.body) if 300 > status
         result = JSON.parse(res.body) rescue nil # rubocop:disable RescueModifier
@@ -31,6 +44,10 @@ module Telegram
       def http_request(method, uri, query, body)
         client.request(method, uri, query, body)
       end
+
+      def inspect
+        "#<#{self.class.name}##{object_id}(#{@id})>"
+      end
     end
   end
 end
diff --git a/lib/telegram/bot/botan/client_helpers.rb b/lib/telegram/bot/botan/client_helpers.rb
new file mode 100644
index 0000000..b88efa1
--- /dev/null
+++ b/lib/telegram/bot/botan/client_helpers.rb
@@ -0,0 +1,15 @@
+module Telegram
+  module Bot
+    class Botan
+      # Helpers for botan.io metrics.
+      module ClientHelpers
+        attr_reader :botan
+
+        def initialize(*, botan: nil, **)
+          super
+          @botan = Botan.wrap(botan, id: id) if botan
+        end
+      end
+    end
+  end
+end
diff --git a/lib/telegram/bot/updates_controller/botan.rb b/lib/telegram/bot/botan/controller_helpers.rb
similarity index 94%
rename from lib/telegram/bot/updates_controller/botan.rb
rename to lib/telegram/bot/botan/controller_helpers.rb
index b260600..02816c5 100644
--- a/lib/telegram/bot/updates_controller/botan.rb
+++ b/lib/telegram/bot/botan/controller_helpers.rb
@@ -1,8 +1,8 @@
 module Telegram
   module Bot
-    class UpdatesController
+    class Botan
       # Helpers for botan.io metrics.
-      module Botan
+      module ControllerHelpers
         class MissingFrom < Error; end
 
         protected
diff --git a/lib/telegram/bot/client.rb b/lib/telegram/bot/client.rb
index 526c41a..a91d162 100644
--- a/lib/telegram/bot/client.rb
+++ b/lib/telegram/bot/client.rb
@@ -2,7 +2,6 @@ require 'json'
 require 'httpclient'
 require 'active_support/core_ext/string/inflections'
 require 'active_support/core_ext/hash/keys'
-require 'telegram/bot/debug_client'
 
 module Telegram
   module Bot
@@ -10,23 +9,14 @@ module Telegram
       URL_TEMPLATE = 'https://api.telegram.org/bot%s/'.freeze
 
       autoload :TypedResponse, 'telegram/bot/client/typed_response'
+      extend Initializers
+      prepend Async
+      prepend Botan::ClientHelpers
       include DebugClient
 
       class << self
-        # Accepts different options to initialize bot.
-        def wrap(input)
-          case input
-          when self then input
-          when Array then input.map(&method(__callee__))
-          when Hash then
-            input = input.stringify_keys
-            new input['token'], input['username'], botan: input['botan']
-          when Symbol
-            Telegram.bots[input] or
-              raise "Bot #{input} not configured, check Telegram.bots_config."
-          else
-            new(input)
-          end
+        def by_id(id)
+          Telegram.bots[id]
         end
 
         # Prepend TypedResponse module.
@@ -41,16 +31,19 @@ module Telegram
             body[k] = val.to_json if val.is_a?(Hash) || val.is_a?(Array)
           end
         end
+
+        def prepare_async_args(action, body = {})
+          [action.to_s, Async.prepare_hash(prepare_body(body))]
+        end
       end
 
-      attr_reader :client, :token, :username, :base_uri, :botan
+      attr_reader :client, :token, :username, :base_uri
 
-      def initialize(token, username = nil, botan: nil)
+      def initialize(token = nil, username = nil, **options)
         @client = HTTPClient.new
-        @token = token
-        @username = username
-        @base_uri = format URL_TEMPLATE, token
-        @botan = Botan.new(botan) if botan
+        @token = token || options[:token]
+        @username = username || options[:username]
+        @base_uri = format URL_TEMPLATE, self.token
       end
 
       def request(action, body = {}) # rubocop:disable PerceivedComplexity
diff --git a/lib/telegram/bot/client_stub.rb b/lib/telegram/bot/client_stub.rb
index 5a590b9..7269815 100644
--- a/lib/telegram/bot/client_stub.rb
+++ b/lib/telegram/bot/client_stub.rb
@@ -9,7 +9,7 @@ module Telegram
           if self == ClientStub || !ClientStub.stub_all?
             super
           else
-            ClientStub.new(args[1])
+            ClientStub.new(*args)
           end
         end
       end
@@ -34,8 +34,8 @@ module Telegram
         end
       end
 
-      def initialize(username = nil)
-        @username = username
+      def initialize(token = nil, username = nil, **options)
+        @username = username || options[:username] || token
         reset
       end
 
diff --git a/lib/telegram/bot/config_methods.rb b/lib/telegram/bot/config_methods.rb
index eb70be7..6272e21 100644
--- a/lib/telegram/bot/config_methods.rb
+++ b/lib/telegram/bot/config_methods.rb
@@ -26,7 +26,9 @@ module Telegram
 
       # Hash of bots made with bots_config.
       def bots
-        @bots ||= bots_config.transform_values(&Client.method(:wrap))
+        @bots ||= bots_config.each_with_object({}) do |(id, config), h|
+          h[id] = Client.wrap(config, id: id)
+        end
       end
 
       # Default bot.
@@ -34,17 +36,26 @@ module Telegram
         @bot ||= bots[:default]
       end
 
+      # Hash of botan clients made from #bots.
+      def botans
+        @botans ||= bots.transform_values(&:botan)
+      end
+
       # Returns config for .bots method. By default uses `telegram['bots']` section
       # from `secrets.yml` merging `telegram['bot']` at `:default` key.
       #
       # Can be overwritten with .bots_config=
       def bots_config
-        return @bots_config if @bots_config
-        telegram_config = Rails.application.secrets[:telegram]
-        (telegram_config['bots'] || {}).symbolize_keys.tap do |config|
-          default = telegram_config['bot']
-          config[:default] = default if default
-        end
+        @bots_config ||=
+          if defined?(Rails)
+            telegram_config = Rails.application.secrets[:telegram] || {}
+            (telegram_config['bots'] || {}).symbolize_keys.tap do |config|
+              default = telegram_config['bot']
+              config[:default] = default if default
+            end
+          else
+            {}
+          end
       end
 
       # Resets all cached bots and their configs.
@@ -52,6 +63,7 @@ module Telegram
         @bots = nil
         @bot = nil
         @bots_config = nil
+        @botans = nil
       end
     end
   end
diff --git a/lib/telegram/bot/initializers.rb b/lib/telegram/bot/initializers.rb
new file mode 100644
index 0000000..b0f9c71
--- /dev/null
+++ b/lib/telegram/bot/initializers.rb
@@ -0,0 +1,19 @@
+module Telegram
+  module Bot
+    module Initializers
+      # Accepts different options to initialize bot.
+      def wrap(input, **options)
+        case input
+        when Symbol then by_id(input) or raise "#{name} #{input.inspect} not configured"
+        when self   then input
+        when Hash   then new(**input.symbolize_keys, **options)
+        else        new(input, **options)
+        end
+      end
+
+      def by_id(_id)
+        raise 'Not implemented'
+      end
+    end
+  end
+end
diff --git a/lib/telegram/bot/updates_controller.rb b/lib/telegram/bot/updates_controller.rb
index a1fb482..1321e6a 100644
--- a/lib/telegram/bot/updates_controller.rb
+++ b/lib/telegram/bot/updates_controller.rb
@@ -59,7 +59,6 @@ module Telegram
       require 'telegram/bot/updates_controller/reply_helpers'
       autoload :CallbackQueryContext, 'telegram/bot/updates_controller/callback_query_context'
       autoload :MessageContext, 'telegram/bot/updates_controller/message_context'
-      autoload :Botan, 'telegram/bot/updates_controller/botan'
 
       include AbstractController::Callbacks
       # Redefine callbacks with default terminator.
diff --git a/lib/telegram/bot/updates_poller.rb b/lib/telegram/bot/updates_poller.rb
index 825dcdb..05e2b15 100644
--- a/lib/telegram/bot/updates_poller.rb
+++ b/lib/telegram/bot/updates_poller.rb
@@ -64,7 +64,7 @@ module Telegram
       end
 
       def fetch_updates
-        response = bot.get_updates(offset: offset, timeout: timeout)
+        response = bot.async(false) { bot.get_updates(offset: offset, timeout: timeout) }
         return unless response['ok'] && response['result'].any?
         reload! do
           response['result'].each do |update|
diff --git a/lib/telegram/bot/version.rb b/lib/telegram/bot/version.rb
index bf9e4e4..c9a72c1 100644
--- a/lib/telegram/bot/version.rb
+++ b/lib/telegram/bot/version.rb
@@ -1,6 +1,6 @@
 module Telegram
   module Bot
-    VERSION = '0.8.0'.freeze
+    VERSION = '0.9.0.alpha2'.freeze
 
     def self.gem_version
       Gem::Version.new VERSION
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 459e2f2..cbf60f6 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -17,6 +17,8 @@ require 'telegram/bot'
 require 'telegram/bot/updates_controller/rspec_helpers'
 require 'telegram/bot/types'
 
+Dir[GEM_ROOT.join('spec/support/**/*.rb')].each { |f| require f }
+
 RSpec.configure do |config|
   config.expect_with :rspec do |expectations|
     # This option will default to `true` in RSpec 4. It makes the `description`
diff --git a/spec/support/examples/async.rb b/spec/support/examples/async.rb
new file mode 100644
index 0000000..cbf384b
--- /dev/null
+++ b/spec/support/examples/async.rb
@@ -0,0 +1,143 @@
+RSpec.shared_examples 'async' do |request_args: -> {}|
+  let(:instance) { described_class.new(token: token, id: id, async: async) }
+  let(:id) { :default_bot }
+  let(:async) { true }
+  let!(:application_job_class) do
+    klass = Class.new do
+      def self.perform_later(*)
+      end
+    end
+    klass.tap { |x| stub_const('ApplicationJob', x) }
+  end
+  after { described_class.default_async_job = nil }
+
+  describe '#async' do
+    subject { ->(*args, &block) { instance.async(*args, &block) } }
+    its(:call) { should eq described_class.default_async_job }
+
+    context 'when async is disabled' do
+      let(:async) { false }
+      its(:call) { should eq false }
+    end
+
+    context 'when using with block' do
+      it 'sets value inside block' do
+        expect do
+          expect do
+            subject.call(false) do
+              expect do
+                subject.call(nil) { expect(subject[]).to eq nil }
+              end.to_not change(&subject).from false
+              raise 'TestError'
+            end
+          end.to raise_error(/TestError/)
+        end.to_not change(instance, :async).from(described_class.default_async_job)
+      end
+    end
+
+    context 'in multi-threaded environment' do
+      it 'changes only in current thread' do
+        thread = nil
+        expect do
+          thread = Thread.new do
+            expect do
+              subject.call(false) do
+                expect(subject[]).to eq false
+              end
+            end.to_not change(instance, :async).from(described_class.default_async_job)
+            sleep 0.2
+          end
+        end.to_not change(instance, :async).from(described_class.default_async_job)
+        thread.join
+      end
+
+      it 'uses default value after block' do
+        thread = Thread.new do
+          subject.call(false) {}
+          expect { sleep 0.2 }.to change(instance, :async).
+            from(described_class.default_async_job).to(nil)
+        end
+        sleep 0.1
+        instance.async = nil
+        thread.join
+      end
+    end
+  end
+
+  describe '#async=' do
+    subject { ->(val = new_val) { instance.async = val } }
+    let(:async) {}
+
+    context 'when true is given' do
+      let(:new_val) { true }
+      it { should change(instance, :async).to described_class.default_async_job }
+    end
+
+    context 'when false is given' do
+      let(:new_val) { false }
+      it { should change(instance, :async).to false }
+    end
+
+    context 'when string is given' do
+      let(:new_val) { 'Telegram::Bot::Client' }
+      it { should change(instance, :async).to Object.const_get(new_val) }
+    end
+
+    context 'in multi-threaded environment' do
+      subject { ->(val = new_val) { Thread.new { instance.async = val }.join } }
+      let(:new_val) { true }
+      it { should change(instance, :async).to described_class.default_async_job }
+    end
+  end
+
+  describe '.default_async_job' do
+    subject { described_class.default_async_job }
+    its(:superclass) { should eq application_job_class }
+    it { should include Telegram::Bot::Async::Job }
+    its(:client_class) { should eq described_class }
+
+    context 'when ApplicationJob is not defined' do
+      let(:application_job_class) {}
+      it { expect { subject }.to raise_error(/Define ApplicationJob/) }
+    end
+  end
+
+  describe '#request' do
+    subject { ->(*args) { instance.request(*(args.empty? ? self.args : args)) } }
+    let(:args, &request_args)
+    let(:result) { double(:result) }
+
+    shared_examples 'enqueues job' do
+      it 'enqueues job' do
+        expect(instance).to_not receive(:http_request)
+        expect(described_class).to receive(:prepare_async_args).with(*args) { args }
+        expect(instance.async).to receive(:perform_later).with(id.to_s, *args) { result }
+        expect(subject.call).to eq result
+      end
+    end
+
+    include_examples 'enqueues job'
+
+    context 'with custom job class' do
+      let(:async) { double(:job_class) }
+      include_examples 'enqueues job'
+    end
+
+    context 'when id is not set' do
+      let(:id) {}
+      it { should raise_error(/Can not enqueue/) }
+    end
+
+    context 'when async is disabled' do
+      let(:async) { false }
+      let(:result) { double(status: 200, body: '{"test":"ok"}') }
+      let(:args, &request_args)
+
+      it 'performs request immediately' do
+        expect(instance).to receive(:request).with(*args).and_call_original
+        expect(instance).to receive(:http_request) { result }
+        expect(subject[]).to eq 'test' => 'ok'
+      end
+    end
+  end
+end
diff --git a/spec/support/examples/initializers.rb b/spec/support/examples/initializers.rb
new file mode 100644
index 0000000..552c985
--- /dev/null
+++ b/spec/support/examples/initializers.rb
@@ -0,0 +1,65 @@
+RSpec.shared_examples 'initializers' do |config_method = :bots|
+  describe '.wrap' do
+    subject { described_class.wrap(input, **options) }
+    let(:options) { {} }
+    let(:result) { double(:result) }
+    let(:username) { 'username' }
+
+    context 'when input is a string' do
+      let(:input) { token }
+
+      it 'treats string as token' do
+        expect(described_class).to receive(:new).with(token, {}) { result }
+        should eq result
+      end
+
+      context 'and additional options are given' do
+        let(:options) { {id: :test} }
+
+        it 'passes them to initializer' do
+          expect(described_class).to receive(:new).with(input, **options) { result }
+          should eq result
+        end
+      end
+    end
+
+    context 'when input is a hash' do
+      let(:input) { {token: token, 'username' => username, other: :options} }
+
+      it 'passes it with symbolized keys' do
+        expect(described_class).to receive(:new).with(**input.symbolize_keys) { result }
+        should eq result
+      end
+
+      context 'and additional options are given' do
+        let(:options) { {id: :test} }
+
+        it 'passes them to initializer' do
+          expect(described_class).to receive(:new).
+            with(**input.symbolize_keys, **options) { result }
+          should eq result
+        end
+      end
+    end
+
+    context 'when input is an instance of described_class' do
+      let!(:input) { instance }
+
+      it 'returns input' do
+        expect(described_class).to_not receive(:new)
+        should eq input
+      end
+    end
+
+    context 'when input is a Symbol' do
+      let(:input) { :client_1 }
+      before { allow(Telegram).to receive(config_method) { {client_1: instance} } }
+      it { should eq Telegram.send(config_method)[:client_1] }
+
+      context 'and there is no such bot' do
+        let(:input) { :invalid }
+        it { expect { subject }.to raise_error(/not configured/) }
+      end
+    end
+  end
+end
diff --git a/spec/telegram/bot/async_spec.rb b/spec/telegram/bot/async_spec.rb
new file mode 100644
index 0000000..ce13e43
--- /dev/null
+++ b/spec/telegram/bot/async_spec.rb
@@ -0,0 +1,28 @@
+RSpec.describe Telegram::Bot::Async::Job do
+  let(:job_class) do
+    described_class = self.described_class
+    client_class = self.client_class
+    Class.new do
+      include described_class
+      self.client_class = client_class
+    end
+  end
+  let(:client_class) { Telegram::Bot::Client }
+  let(:instance) { job_class.new }
+
+  describe '#perform' do
+    subject { instance.perform(id, *args) }
+    let(:id) { 'bot_id' }
+    let(:args) { [double(:action), {body: :content}] }
+    let(:client) { Telegram::Bot::Client.new(async: custom_job_class) }
+    let(:custom_job_class) { Class.new }
+    let(:result) { double(status: 200, body: '{"test":"ok"}') }
+
+    it 'finds client and performs request' do
+      expect(client_class).to receive(:wrap).with(id.to_sym) { client }
+      expect(client).to receive(:request).with(*args).and_call_original
+      expect(client).to receive(:http_request) { result }
+      should eq 'test' => 'ok'
+    end
+  end
+end
diff --git a/spec/telegram/bot/botan/client_helpers_spec.rb b/spec/telegram/bot/botan/client_helpers_spec.rb
new file mode 100644
index 0000000..69945f4
--- /dev/null
+++ b/spec/telegram/bot/botan/client_helpers_spec.rb
@@ -0,0 +1,33 @@
+RSpec.describe Telegram::Bot::Client do
+  let(:instance) { described_class.new(*client_args) }
+  let(:token) { 'token' }
+  let(:botan_token) { double(:botan_token) }
+  let(:client_id) { 'client_id' }
+  let(:client_args) { [token] }
+
+  describe '#botan' do
+    subject { instance.botan }
+    it { should eq nil }
+
+    context 'when botan token is set' do
+      let(:client_args) { [token, id: client_id, async: Class.new, botan: botan_token] }
+      it { should be_instance_of Telegram::Bot::Botan }
+      its(:token) { should eq botan_token }
+      its(:id) { should eq client_id }
+
+      it 'doesnt inherit async from client' do
+        expect(instance.async).to be
+        expect(subject.async).to_not be
+      end
+    end
+
+    context 'when botan is configured with hash' do
+      let(:client_args) { [token, id: client_id, async: Class.new, botan: botan_config] }
+      let(:botan_config) { {token: botan_token, async: Class.new} }
+      it { should be_instance_of Telegram::Bot::Botan }
+      its(:token) { should eq botan_token }
+      its(:id) { should eq client_id }
+      its(:async) { should eq botan_config[:async] }
+    end
+  end
+end
diff --git a/spec/telegram/bot/updates_controller/botan_spec.rb b/spec/telegram/bot/botan/controller_helpers_spec.rb
similarity index 96%
rename from spec/telegram/bot/updates_controller/botan_spec.rb
rename to spec/telegram/bot/botan/controller_helpers_spec.rb
index 1b63717..43ac742 100644
--- a/spec/telegram/bot/updates_controller/botan_spec.rb
+++ b/spec/telegram/bot/botan/controller_helpers_spec.rb
@@ -1,4 +1,4 @@
-RSpec.describe Telegram::Bot::UpdatesController::Botan do
+RSpec.describe Telegram::Bot::Botan::ControllerHelpers do
   include_context 'telegram/bot/updates_controller'
   let(:controller_class) do
     described_class = self.described_class
diff --git a/spec/telegram/bot/botan_spec.rb b/spec/telegram/bot/botan_spec.rb
new file mode 100644
index 0000000..03a072b
--- /dev/null
+++ b/spec/telegram/bot/botan_spec.rb
@@ -0,0 +1,27 @@
+RSpec.describe Telegram::Bot::Botan do
+  let(:instance) { described_class.new 'token' }
+  let(:token) { 'token' }
+
+  include_examples 'initializers', :botans
+  include_examples 'async', request_args: -> { [double(:method), double(:url)] }
+
+  describe '.new' do
+    subject { described_class.new(*args) }
+
+    context 'when usual args are given' do
+      let(:args) { ['secret'] }
+      its(:token) { should eq args[0] }
+    end
+
+    context 'when options are given' do
+      let(:args) { [token: 'secret'] }
+      its(:token) { should eq args[0][:token] }
+    end
+  end
+
+  describe '.prepare_async_args' do
+    subject { described_class.prepare_async_args(*input) }
+    let(:input) { [:post, :uri, {a: 1, b: :sym, 'd' => 'str'}, 'body'] }
+    it { should eq ['post', 'uri', {a: 1, b: 'sym', 'd' => 'str'}, 'body'] }
+  end
+end
diff --git a/spec/telegram/bot/client_spec.rb b/spec/telegram/bot/client_spec.rb
index 786531a..df4d1a8 100644
--- a/spec/telegram/bot/client_spec.rb
+++ b/spec/telegram/bot/client_spec.rb
@@ -3,71 +3,8 @@ RSpec.describe Telegram::Bot::Client do
   let(:token) { 'token' }
   let(:botan_token) { double(:botan_token) }
 
-  describe '.wrap' do
-    subject { described_class.wrap(input) }
-    let(:result) { double(:result) }
-    let(:username) { 'username' }
-
-    context 'when input is a string' do
-      let(:input) { token }
-
-      it 'treats string as token' do
-        expect(described_class).to receive(:new).with(token) { result }
-        should eq result
-      end
-    end
-
-    context 'when input is a hash' do
-      let(:input) { {token: token, username: username, ignore: :ignore} }
-
-      it 'extracts token & username' do
-        expect(described_class).to receive(:new).
-          with(token, username, botan: nil) { result }
-        should eq result
-      end
-
-      context 'when `botan` is given' do
-        let(:input) { super().merge(botan: botan_token) }
-
-        it 'passes it to initializer' do
-          expect(described_class).to receive(:new).
-            with(token, username, botan: botan_token) { result }
-          should eq result
-        end
-      end
-    end
-
-    context 'when input is an instance of described_class' do
-      let!(:input) { instance }
-
-      it 'returns input' do
-        expect(described_class).to_not receive(:new)
-        should eq input
-      end
-    end
-
-    context 'when input is a Symbol' do
-      let(:input) { :bot_1 }
-      before { allow(Telegram).to receive(:bots) { {bot_1: instance} } }
-      it { should eq Telegram.bots[:bot_1] }
-
-      context 'and there is no such bot' do
-        let(:input) { :invalid }
-        it { expect { subject }.to raise_error(/not configured/) }
-      end
-    end
-
-    context 'when input is an array' do
-      let!(:input) { ['other_token', instance, token: token, username: username] }
-      let(:result_2) { double(:result_2) }
-
-      it 'calls wrap for every element' do
-        expect(described_class).to receive(:new).with('other_token') { result }
-        expect(described_class).to receive(:new).with(token, username, botan: nil) { result_2 }
-        should eq [result, instance, result_2]
-      end
-    end
-  end
+  include_examples 'initializers'
+  include_examples 'async', request_args: -> { [double(:action), {body: :content}] }
 
   describe '.prepare_body' do
     subject { described_class.prepare_body(input) }
@@ -88,14 +25,27 @@ RSpec.describe Telegram::Bot::Client do
     end
   end
 
-  describe '#botan' do
-    subject { instance.botan }
-    it { should eq nil }
+  describe '.prepare_async_args' do
+    subject { described_class.prepare_async_args(*input) }
+    let(:input) { [:action, a: 1, b: :sym, c: [:other], 'd' => 'str'] }
+    it { should eq ['action', a: 1, b: 'sym', c: '["other"]', 'd' => 'str'] }
+  end
 
-    context 'when botan token is set' do
-      let(:instance) { described_class.new token, botan: botan_token }
-      it { should be_instance_of Telegram::Bot::Botan }
-      its(:token) { should eq botan_token }
+  describe '.new' do
+    subject { described_class.new(*args) }
+
+    context 'when multiple args are given' do
+      let(:args) { %w(secret superbot) }
+      its(:token) { should eq args[0] }
+      its(:username) { should eq args[1] }
+      its(:base_uri) { should include args[0] }
+    end
+
+    context 'when hash is given' do
+      let(:args) { [token: 'secret', username: 'superbot'] }
+      its(:token) { should eq args[0][:token] }
+      its(:username) { should eq args[0][:username] }
+      its(:base_uri) { should include args[0][:token] }
     end
   end
 end
diff --git a/spec/telegram/bot/client_stub_spec.rb b/spec/telegram/bot/client_stub_spec.rb
index 64af69f..59390e2 100644
--- a/spec/telegram/bot/client_stub_spec.rb
+++ b/spec/telegram/bot/client_stub_spec.rb
@@ -1,7 +1,7 @@
 RSpec.describe Telegram::Bot::ClientStub do
   describe '#stub_all!' do
     let(:client) { Telegram::Bot::Client.new('token', 'bot_name') }
-    let(:clients) { Telegram::Bot::Client.wrap(['token', token: 'token2']) }
+    let(:clients) { ['token', token: 'token2'].map(&Telegram::Bot::Client.method(:wrap)) }
 
     shared_examples 'constructors' do |expected_class|
       it 'makes Client.new return ClientStub' do
@@ -9,7 +9,7 @@ RSpec.describe Telegram::Bot::ClientStub do
         expect(client.username).to eq 'bot_name'
       end
 
-      it 'makes Client.wrap raturn ClientStub' do
+      it 'makes Client.wrap return ClientStub' do
         expect(clients).to contain_exactly instance_of(expected_class),
           instance_of(expected_class)
       end
@@ -35,4 +35,19 @@ RSpec.describe Telegram::Bot::ClientStub do
       include_examples 'constructors', Telegram::Bot::Client
     end
   end
+
+  describe '#new' do
+    subject { described_class.new(*args) }
+
+    context 'when only username is given' do
+      let(:args) { 'superbot' }
+      its(:username) { should eq args }
+    end
+
+    context 'when username and token are given' do
+      let(:args) { %w(token superbot) }
+      its(:token) { should eq nil }
+      its(:username) { should eq args[1] }
+    end
+  end
 end
diff --git a/spec/telegram/bot/config_methods_spec.rb b/spec/telegram/bot/config_methods_spec.rb
new file mode 100644
index 0000000..f806896
--- /dev/null
+++ b/spec/telegram/bot/config_methods_spec.rb
@@ -0,0 +1,94 @@
+RSpec.describe Telegram::Bot::ConfigMethods do
+  let(:registry) do
+    Object.new.tap do |x|
+      x.extend described_class
+      x.bots_config = config
+    end
+  end
+  let(:config) do
+    {
+      default: 'default_token',
+      chat: {
+        token: 'chat_token',
+        username: 'Chat',
+        botan: 'chat_botan_token',
+      },
+      other_chat: {
+        'token' => 'other_chat_token',
+        'username' => 'OtherChat',
+        'botan' => 'other_chat_botan_token',
+      },
+    }
+  end
+
+  describe '#bot' do
+    subject { registry.bot }
+    it { should eq registry.bots[:default] }
+  end
+
+  describe '#bots' do
+    context 'configured by token' do
+      subject { registry.bots[:default] }
+      its(:id) { should eq :default }
+      its(:token) { should eq config[:default] }
+    end
+
+    context 'configured by hash' do
+      subject { registry.bots[:chat] }
+      its(:id) { should eq :chat }
+      its(:token) { should eq config[:chat][:token] }
+      its(:username) { should eq config[:chat][:username] }
+      its('botan.token') { should eq config[:chat][:botan] }
+    end
+
+    context 'configured by hash with stringified keys' do
+      subject { registry.bots[:other_chat] }
+      its(:id) { should eq :other_chat }
+      its(:token) { should eq config[:other_chat]['token'] }
+      its(:username) { should eq config[:other_chat]['username'] }
+      its('botan.token') { should eq config[:other_chat]['botan'] }
+    end
+  end
+
+  describe '#botans' do
+    subject { registry.botans }
+    it do
+      should eq(
+        default: nil,
+        chat: registry.bots[:chat].botan,
+        other_chat: registry.bots[:other_chat].botan,
+      )
+    end
+  end
+
+  describe '#bots_config' do
+    subject { registry.bots_config }
+    it { should eq config }
+
+    context 'when not configured' do
+      let(:registry) { Object.new.tap { |x| x.extend described_class } }
+      it { should eq({}) }
+
+      context 'in rails environment' do
+        before { stub_const('Rails', double(application: double(secrets: secrets))) }
+        let(:secrets) { {} }
+        it { should eq({}) }
+
+        context 'when there is telegram section in secrets' do
+          let(:secrets) { {telegram: config.stringify_keys} }
+          let(:config) do
+            {
+              bot: double(:bot_config),
+              bots: {
+                chat: double(:chat_config),
+                other_chat: double(:other_chat_config),
+              },
+            }
+          end
+          it { should include default: config[:bot] }
+          it { should include config[:bots] }
+        end
+      end
+    end
+  end
+end