diff --git a/Gemfile b/Gemfile
index 2bfb850fe..939553659 100644
--- a/Gemfile
+++ b/Gemfile
@@ -78,6 +78,11 @@ gem 'whenever', '~> 0.9.4', require: false
 # for dates and times
 gem 'iso8601', '~> 0.8.2'
 
+# for REST API
+gem 'grape', '~> 0.10.1'
+
+gem 'hashie_rails', '~> 0.0.1'
+
 group :development, :test do
   # for inserting dummy data
   gem 'activerecord-import', '~> 0.6.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index 0da446a29..75e4a0cde 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -125,6 +125,16 @@ GEM
       ruby_parser (~> 3.1, > 3.1.0)
       sexp_processor (~> 4.4)
     formatador (0.2.5)
+    grape (0.10.1)
+      activesupport
+      builder
+      hashie (>= 2.1.0)
+      multi_json (>= 1.3.2)
+      multi_xml (>= 0.5.2)
+      rack (>= 1.3.0)
+      rack-accept
+      rack-mount
+      virtus (>= 1.0.0)
     guard (2.6.1)
       formatador (>= 0.2.4)
       listen (~> 2.7)
@@ -144,6 +154,10 @@ GEM
       activesupport (>= 4.0.1)
       haml (>= 3.1, < 5.0)
       railties (>= 4.0.1)
+    hashie (3.3.2)
+    hashie_rails (0.0.1)
+      hashie (>= 3.0)
+      rails (~> 4.0)
     highline (1.6.21)
     hike (1.2.3)
     hitimes (1.2.2)
@@ -183,6 +197,7 @@ GEM
     mini_portile (0.6.0)
     minitest (5.5.0)
     multi_json (1.10.1)
+    multi_xml (0.5.5)
     nokogiri (1.6.2.1)
       mini_portile (= 0.6.0)
     nprogress-rails (0.1.3.1)
@@ -212,6 +227,10 @@ GEM
       method_source (~> 0.8.1)
       slop (~> 3.4)
     rack (1.5.2)
+    rack-accept (0.4.5)
+      rack (>= 0.4)
+    rack-mount (0.8.3)
+      rack (>= 1.0.0)
     rack-test (0.6.2)
       rack (>= 1.0)
     railroady (1.2.0)
@@ -391,10 +410,12 @@ DEPENDENCIES
   epp-xml (~> 0.10.3)
   fabrication (~> 2.11.3)
   faker (~> 1.3.0)
+  grape (~> 0.10.1)
   guard (~> 2.6.1)
   guard-rspec (~> 4.3.1)
   guard-rubocop (~> 1.1.0)
   haml-rails (~> 0.5.3)
+  hashie_rails (~> 0.0.1)
   isikukood
   iso8601 (~> 0.8.2)
   jbuilder (~> 2.0)
diff --git a/app/api/repp/api.rb b/app/api/repp/api.rb
new file mode 100644
index 000000000..5e837cdd9
--- /dev/null
+++ b/app/api/repp/api.rb
@@ -0,0 +1,22 @@
+module Repp
+  class API < Grape::API
+    format :json
+    prefix :repp
+    version 'v1', using: :path
+
+    http_basic do |username, password|
+      @current_user ||= EppUser.find_by(username: username, password: password)
+    end
+
+    helpers do
+      attr_reader :current_user
+    end
+
+    resource :domains do
+      desc 'Return list of domains'
+      get '/' do
+        current_user.registrar.domains
+      end
+    end
+  end
+end
diff --git a/config/application.rb b/config/application.rb
index 8e4a6a7c2..72702bcfe 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -27,6 +27,9 @@ module Registry
     # config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s]
     # config.i18n.default_locale = :de
 
+    config.paths.add File.join('app', 'api'), glob: File.join('**', '*.rb')
+    config.autoload_paths += Dir[Rails.root.join('app', 'api', '*')]
+
     config.generators do |g|
       g.stylesheets false
       g.javascripts false
diff --git a/config/routes.rb b/config/routes.rb
index 1c9ef495d..d2cec9962 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -5,6 +5,8 @@ Rails.application.routes.draw do
     get 'error/:command', to: 'errors#error', defaults: { format: :xml }
   end
 
+  mount Repp::API => '/'
+
   ## ADMIN ROUTES
   namespace(:admin) do
     resources :keyrelays