diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000..b87bfc3
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+source 'https://rubygems.org'
+
+gem 'faker'
+gem 'httparty'
+gem 'rspec'
+gem 'rubocop'
diff --git a/Gemfile.lock b/Gemfile.lock
new file mode 100644
index 0000000..8ae76d2
--- /dev/null
+++ b/Gemfile.lock
@@ -0,0 +1,61 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    ast (2.4.2)
+    concurrent-ruby (1.1.9)
+    diff-lcs (1.4.4)
+    faker (2.18.0)
+      i18n (>= 1.6, < 2)
+    httparty (0.18.1)
+      mime-types (~> 3.0)
+      multi_xml (>= 0.5.2)
+    i18n (1.8.10)
+      concurrent-ruby (~> 1.0)
+    mime-types (3.3.1)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2021.0704)
+    multi_xml (0.6.0)
+    parallel (1.20.1)
+    parser (3.0.1.1)
+      ast (~> 2.4.1)
+    rainbow (3.0.0)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
+    rspec (3.10.0)
+      rspec-core (~> 3.10.0)
+      rspec-expectations (~> 3.10.0)
+      rspec-mocks (~> 3.10.0)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.10.0)
+    rspec-support (3.10.2)
+    rubocop (1.18.3)
+      parallel (~> 1.10)
+      parser (>= 3.0.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.7.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.7.0)
+      parser (>= 3.0.1.1)
+    ruby-progressbar (1.11.0)
+    unicode-display_width (2.0.0)
+
+PLATFORMS
+  x86_64-darwin-19
+
+DEPENDENCIES
+  faker
+  httparty
+  rspec
+  rubocop
+
+BUNDLED WITH
+   2.2.21
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..0cdaad0
--- /dev/null
+++ b/README.md
@@ -0,0 +1,12 @@
+### This repository uses:
+
+- https://github.com/jnunemaker/httparty/
+- https://github.com/rspec/rspec
+- https://github.com/serverest/serverest
+
+
+### Documentation:
+
+- https://www.rubydoc.info/github/jnunemaker/httparty/HTTParty/ClassMethods
+- https://www.rubydoc.info/github/jnunemaker/httparty/HTTParty/Response
+- https://relishapp.com/rspec/rspec-expectations/docs/built-in-matchers
diff --git a/services/user_service.rb b/services/user_service.rb
new file mode 100644
index 0000000..ba7b9e8
--- /dev/null
+++ b/services/user_service.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+module Request
+  include HTTParty
+  base_uri 'https://serverest.dev'
+  format :json
+end
diff --git a/spec/get_spec.rb b/spec/get_spec.rb
new file mode 100644
index 0000000..deaf5b3
--- /dev/null
+++ b/spec/get_spec.rb
@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+describe 'getting information' do
+  it 'get users' do
+    @users = Request.get('/usuarios')
+    expect(@users.code).to eq(200)
+    puts @users
+    # expect(@users['usuarios'][0]['nome']).to eq('Fulano da Silva')
+  end
+end
+
+# # Or wrap things up in your own class
+# class StackExchange
+#   include HTTParty
+#   base_uri 'api.stackexchange.com'
+
+#   def initialize(service, page)
+#     @options = { query: { site: service, page: page } }
+#   end
+
+#   def questions
+#     self.class.get("/2.2/questions", @options)
+#   end
+
+#   def users
+#     self.class.get("/2.2/users", @options)
+#   end
+# end
+
+# stack_exchange = StackExchange.new("stackoverflow", 1)
+# puts stack_exchange.questions
+# puts stack_exchange.users
+
+# httparty "https://api.stackexchange.com/2.2/questions?site=stackoverflow" --format json (--help)
diff --git a/spec/post_spec.rb b/spec/post_spec.rb
new file mode 100644
index 0000000..cdf9854
--- /dev/null
+++ b/spec/post_spec.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+describe 'posting information' do
+  it 'register user' do
+    @new_user = {
+      'nome' => Faker::Name.name,
+      'email' => Faker::Internet.email,
+      'password' => Faker::Internet.password,
+      'administrador' => Faker::Boolean.boolean
+    }
+    # puts @new_user
+
+    @request = Request.post('/usuarios', body: @new_user)
+    expect(@request.code).to eq(201)
+    expect(@request['_id']).not_to be nil
+    puts @id_user = @request['_id']
+    expect(@request['message']).to eq('Cadastro realizado com sucesso')
+  end
+end
diff --git a/spec/put_spec.rb b/spec/put_spec.rb
new file mode 100644
index 0000000..46526d3
--- /dev/null
+++ b/spec/put_spec.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+describe 'changing information' do
+  it 'modify user information' do
+    @new_user = {
+      'nome' => Faker::Name.name,
+      'email' => Faker::Internet.email,
+      'password' => Faker::Internet.password,
+      'administrador' => Faker::Boolean.boolean
+    }
+    # puts @new_user
+
+    @id_user = 'DE7RTKT8SWmcIc3e'
+    @request = Request.put(%(/usuarios/#{@id_user}), body: @new_user)
+    expect(@request.code).to eq(200)
+    expect(@request['message']).to eq('Registro alterado com sucesso')
+  end
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
new file mode 100644
index 0000000..840d88b
--- /dev/null
+++ b/spec/spec_helper.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+require 'faker'
+require 'httparty'
+require 'rubocop'
+
+require_relative '../services/user_service'
+
+RSpec.configure do |config|
+  config.expect_with :rspec do |expectations|
+    # This option will default to `true` in RSpec 4. It makes the `description`
+    # and `failure_message` of custom matchers include text for helper methods
+    # defined using `chain`, e.g.:
+    #     be_bigger_than(2).and_smaller_than(4).description
+    #     # => "be bigger than 2 and smaller than 4"
+    # ...rather than:
+    #     # => "be bigger than 2"
+    expectations.include_chain_clauses_in_custom_matcher_descriptions = true
+  end
+
+  # rspec-mocks config goes here. You can use an alternate test double
+  # library (such as bogus or mocha) by changing the `mock_with` option here.
+  config.mock_with :rspec do |mocks|
+    # Prevents you from mocking or stubbing a method that does not exist on
+    # a real object. This is generally recommended, and will default to
+    # `true` in RSpec 4.
+    mocks.verify_partial_doubles = true
+  end
+
+  # This option will default to `:apply_to_host_groups` in RSpec 4 (and will
+  # have no way to turn it off -- the option exists only for backwards
+  # compatibility in RSpec 3). It causes shared context metadata to be
+  # inherited by the metadata hash of host groups and examples, rather than
+  # triggering implicit auto-inclusion in groups with matching metadata.
+  config.shared_context_metadata_behavior = :apply_to_host_groups
+end