diff --git a/.rubocop.yml b/.rubocop.yml
index 2d310fd..0269e29 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,63 +1,12 @@
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles.
-Style/StringLiterals:
+inherit_from:
+  - .rubocop_airbnb.yml
+  - .rubocop_todo.yml
+
+Airbnb/ClassOrModuleDeclaredInWrongFile:
   Enabled: false
 
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces, SupportedStyles.
-Layout/SpaceInsideHashLiteralBraces:
+Airbnb/ConstAssignedInWrongFile:
   Enabled: false
 
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles, EnforcedStyleForEmptyBraces, SpaceBeforeBlockParameters.
-Layout/SpaceInsideBlockBraces:
-  Enabled: false
-
-# Cop supports --auto-correct.
-Layout/SpaceBeforeSemicolon:
-  Enabled: false
-
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles.
-Style/SignalException:
-  Enabled: false
-
-# Configuration parameters: Methods.
-Style/SingleLineBlockParams:
-  Enabled: false
-
-# Cop supports --auto-correct.
-Style/PerlBackrefs:
-  Enabled: false
-
-# Cop supports --auto-correct.
-# Configuration parameters: AllowAsExpressionSeparator.
-Style/Semicolon:
-  Enabled: false
-
-Style/Documentation:
-  Enabled: false
-
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles, AllowInnerSlashes.
-Style/RegexpLiteral:
-  Enabled: false
-
-# Cop supports --auto-correct.
-Style/NumericLiterals:
-  MinDigits: 6
-
-# Cop supports --auto-correct.
-Lint/UnusedMethodArgument:
-  Enabled: false
-
-# Cop supports --auto-correct.
-Lint/UnusedBlockArgument:
-  Enabled: false
-
-Lint/Void:
-  Enabled: false
-
-# Configuration parameters: MinBodyLength.
-Style/GuardClause:
-  Enabled: false
+Layout/AlignArguments:
+  EnforcedStyle: with_fixed_indentation
diff --git a/.rubocop_airbnb.yml b/.rubocop_airbnb.yml
new file mode 100644
index 0000000..8dd3420
--- /dev/null
+++ b/.rubocop_airbnb.yml
@@ -0,0 +1,2 @@
+require:
+  - rubocop-airbnb
diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
new file mode 100644
index 0000000..e69de29
diff --git a/Gemfile b/Gemfile
index 1ad879f..f246831 100644
--- a/Gemfile
+++ b/Gemfile
@@ -26,4 +26,6 @@ group :development, :test do
   gem 'pry'
   # https://github.com/lsegal/yard
   gem 'yard'
+  # https://github.com/airbnb/ruby/tree/master/rubocop-airbnb
+  gem 'rubocop-airbnb'
 end
diff --git a/README.md b/README.md
index 1ea1912..f8c1d23 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,23 @@
-TODO
+# Documentation
+
+Documentation can be generated with the command:
+
+```sh
+yard doc 'lib/**/*.rb'
+```
+
+# Specs
+
+Specs can be run with the command:
+
+```sh
+bundle exec rake
+```
+
+# Rubocop
+
+Rubocop can be run with the command:
+
+```sh
+rubocop 'lib'
+```
diff --git a/lib/ngrokapi/client.rb b/lib/ngrokapi/client.rb
index 10cbd84..f5abc28 100644
--- a/lib/ngrokapi/client.rb
+++ b/lib/ngrokapi/client.rb
@@ -117,6 +117,7 @@ module NgrokAPI
     end
 
     private
+
     def headers
       {
         'Authorization': "Bearer #{@api_key}",
@@ -140,8 +141,8 @@ module NgrokAPI
     end
 
     def get_uri(path, data: nil)
-      data = data != nil ? "?#{URI.encode_www_form(data)}" : ""
-      uri = URI("#{url(path)}#{data}")
+      data = !data.nil? ? "?#{URI.encode_www_form(data)}" : ""
+      URI("#{url(path)}#{data}")
     end
 
     def url(path)
diff --git a/lib/ngrokapi/models/api_key.rb b/lib/ngrokapi/models/api_key.rb
index 68d9aa9..e3720c2 100644
--- a/lib/ngrokapi/models/api_key.rb
+++ b/lib/ngrokapi/models/api_key.rb
@@ -46,9 +46,11 @@ module NgrokAPI
       ##
       # Update the attributes of this API key.
       #
+      # rubocop:disable LineLength
       # @param [string] description human-readable description of what uses the API key to authenticate. optional, max 255 bytes.
       # @param [string] metadata arbitrary user-defined data of this API key. optional, max 4096 bytes
       # @return [NgrokAPI::Models::ApiKey] result from update request
+      # rubocop:enable LineLength
       #
       # https://ngrok.com/docs/api#api-api-keys-update
       def update(description: nil, metadata: nil)
diff --git a/lib/ngrokapi/models/endpoint_configuration.rb b/lib/ngrokapi/models/endpoint_configuration.rb
index 9ac23ba..92c2ee9 100644
--- a/lib/ngrokapi/models/endpoint_configuration.rb
+++ b/lib/ngrokapi/models/endpoint_configuration.rb
@@ -42,6 +42,7 @@ module NgrokAPI
       end
 
       ##
+      # rubocop:disable LineLength
       # Update this endpoint configuration. If a module is not specified in the update, it will not be modified.
       # However, each module configuration that is specified will completely replace the existing value.
       # There is no way to delete an existing module via this API, instead use the delete module API.
@@ -60,7 +61,8 @@ module NgrokAPI
       # @param [string] logging logging module configuration
       # @param [string] saml saml module configuration
       # @param [string] oidc oidc module configuration
-      # @return
+      # @return [NgrokAPI::Models::EndpointConfiguration] result from update request
+      # rubocop:enable LineLength
       #
       # https://ngrok.com/docs/api#api-endpoint-configurations-update
       def update(
diff --git a/lib/ngrokapi/models/listable.rb b/lib/ngrokapi/models/listable.rb
index 580233e..2581f39 100644
--- a/lib/ngrokapi/models/listable.rb
+++ b/lib/ngrokapi/models/listable.rb
@@ -20,8 +20,8 @@ module NgrokAPI
         @list_property = list_property
         @next_page_uri = @result['next_page_uri']
         @uri = @result['uri']
-        @items = @result[list_property].map do |result|
-          klass.new(client: client, result: result)
+        @items = @result[list_property].map do |item|
+          klass.new(client: client, result: item)
         end
         @iter = NgrokAPI::PagedIterator.new(
           client: client,
diff --git a/lib/ngrokapi/models/reserved_domain.rb b/lib/ngrokapi/models/reserved_domain.rb
index efa8c3f..1a220a3 100644
--- a/lib/ngrokapi/models/reserved_domain.rb
+++ b/lib/ngrokapi/models/reserved_domain.rb
@@ -60,6 +60,7 @@ module NgrokAPI
       ##
       # Update the attributes of this reserved domain.
       #
+      # rubocop:disable LineLength
       # @param [string] description human-readable description of what this reserved domain will be used for
       # @param [string] metadata arbitrary user-defined machine-readable data of this reserved domain. Optional, max 4096 bytes.
       # @param [string] http_endpoint_configuration_id ID of an endpoint configuration of type http that will be used to handle inbound http traffic to this domain
@@ -67,6 +68,7 @@ module NgrokAPI
       # @param [string] certificate_id ID of a user-uploaded TLS certificate to use for connections to targeting this domain. Optional, mutually exclusive with ``certificate_management_policy``.
       # @param [string] certificate_management_policy configuration for automatic management of TLS certificates for this domain, or null if automatic management is disabled. Optional, mutually exclusive with ``certificate_id``.
       # @return [NgrokAPI::Models::ReservedDomain] result from update request
+      # rubocop:enable LineLength
       #
       # https://ngrok.com/docs/api#api-reserved-domains-update
       def update(
diff --git a/lib/ngrokapi/models/tls_certificate.rb b/lib/ngrokapi/models/tls_certificate.rb
index 8f8cdf6..16b52bd 100644
--- a/lib/ngrokapi/models/tls_certificate.rb
+++ b/lib/ngrokapi/models/tls_certificate.rb
@@ -44,9 +44,11 @@ module NgrokAPI
       ##
       # Update the attributes of this TLS Certificate.
       #
+      # rubocop:disable LineLength
       # @param [string] description human-readable description of this TLS certificate. optional, max 255 bytes.
       # @param [string] metadata arbitrary user-defined machine-readable data of this TLS certificate. optional, max 4096 bytes.
       # @return [NgrokAPI::Models::TlsCertificate] result from update request
+      # rubocop:enable LineLength
       #
       # https://ngrok.com/docs/api#api-tls-certificates-update
       def update(description: nil, metadata: nil)
diff --git a/lib/ngrokapi/paged_iterator.rb b/lib/ngrokapi/paged_iterator.rb
index e2e63bf..ec9a564 100644
--- a/lib/ngrokapi/paged_iterator.rb
+++ b/lib/ngrokapi/paged_iterator.rb
@@ -24,20 +24,18 @@ module NgrokAPI
     #
     # @return [object] Returns an instance of a class.
     def get_next
-      begin
-        item = @page.result[@list_property][@n]
-        raise "None" if item.nil?
-        self.n += 1
-        item
-      rescue => exception
-        if self.page.next_page_uri.nil?
-          # Handle / raise exception
-        else
-          res = @client.list(url: @page.next_page_uri)
-          self.n = 0
-          self.page = res
-          get_next
-        end
+      item = @page.result[@list_property][@n]
+      raise "None" if item.nil?
+      self.n += 1
+      item
+    rescue
+      if @page.next_page_uri.nil?
+        # Handle / raise exception
+      else
+        res = @client.list(url: @page.next_page_uri)
+        self.n = 0
+        self.page = res
+        get_next
       end
     end
   end
diff --git a/lib/ngrokapi/services/api_keys_client.rb b/lib/ngrokapi/services/api_keys_client.rb
index 141c31f..2384780 100644
--- a/lib/ngrokapi/services/api_keys_client.rb
+++ b/lib/ngrokapi/services/api_keys_client.rb
@@ -8,9 +8,9 @@ module NgrokAPI
     # https://ngrok.com/docs/api#api-api-keys
     class ApiKeysClient
       # The List Property from the resulting API for list calls
-      LIST_PROPERTY = 'keys'.freeze
+      LIST_PROPERTY = 'keys'
       # The API path for API keys
-      PATH = '/api_keys'.freeze
+      PATH = '/api_keys'
 
       attr_reader :client
 
@@ -21,9 +21,11 @@ module NgrokAPI
       ##
       # Create a new API key. The generated API key can be used to authenticate to the ngrok API.
       #
+      # rubocop:disable LineLength
       # @param [string] description human-readable description of what uses the API key to authenticate. optional, max 255 bytes.
       # @param [string] metadata arbitrary user-defined data of this API key. optional, max 4096 bytes
       # @return [NgrokAPI::Models::ApiKey] result from create request
+      # rubocop:enable LineLength
       #
       # https://ngrok.com/docs/api#api-api-keys-create
       def create(description: nil, metadata: nil)
@@ -79,10 +81,12 @@ module NgrokAPI
       ##
       # Update attributes of an API key by ID.
       #
+      # rubocop:disable LineLength
       # @param [string] id
       # @param [string] description human-readable description of what uses the API key to authenticate. optional, max 255 bytes.
       # @param [string] metadata arbitrary user-defined data of this API key. optional, max 4096 bytes
       # @return [NgrokAPI::Models::ApiKey] result from update request
+      # rubocop:enable LineLength
       #
       # https://ngrok.com/docs/api#api-api-keys-update
       def update(id: nil, description: nil, metadata: nil)
diff --git a/lib/ngrokapi/services/endpoint_configurations_client.rb b/lib/ngrokapi/services/endpoint_configurations_client.rb
index ac4d646..8771042 100644
--- a/lib/ngrokapi/services/endpoint_configurations_client.rb
+++ b/lib/ngrokapi/services/endpoint_configurations_client.rb
@@ -8,9 +8,9 @@ module NgrokAPI
     # https://ngrok.com/docs/api#api-endpoint-configurations
     class EndpointConfigurationsClient
       # The List Property from the resulting API for list calls
-      LIST_PROPERTY = 'endpoint_configurations'.freeze
+      LIST_PROPERTY = 'endpoint_configurations'
       # The API path for endpoint configurations
-      PATH = '/endpoint_configurations'.freeze
+      PATH = '/endpoint_configurations'
 
       attr_reader :client
 
@@ -21,6 +21,7 @@ module NgrokAPI
       ##
       # Create a new endpoint configuration
       #
+      # rubocop:disable LineLength
       # @param [string] description human-readable description of what this endpoint configuration will be do when applied or what traffic it will be applied to. Optional, max 255 bytes
       # @param [string] metadata arbitrary user-defined machine-readable data of this endpoint configuration. Optional, max 4096 bytes.
       # @param [string] type they type of traffic this endpoint configuration can be applied to. one of: ``http``, ``https``, ``tcp``
@@ -37,6 +38,7 @@ module NgrokAPI
       # @param [string] saml saml module configuration
       # @param [string] oidc oidc module configuration
       # @return [NgrokAPI::Models::EndpointConfiguration] result from create request
+      # rubocop:enable LineLength
       #
       # https://ngrok.com/docs/api#api-endpoint-configurations-create
       def create(
@@ -78,7 +80,9 @@ module NgrokAPI
       end
 
       ##
-      # Delete an endpoint configuration. This operation will fail if the endpoint configuration is still referenced by any reserved domain or reserved address.
+      # Delete an endpoint configuration.
+      # This operation will fail if the endpoint configuration is still referenced by
+      # any reserved domain or reserved address.
       #
       # @param [string] id a resource identifier
       # @return [nil] result from delete request
@@ -120,6 +124,7 @@ module NgrokAPI
       end
 
       ##
+      # rubocop:disable LineLength
       # Updates an endpoint configuration. If a module is not specified in the update, it will not be modified.
       # However, each module configuration that is specified will completely replace the existing value.
       # There is no way to delete an existing module via this API, instead use the delete module API.
@@ -140,6 +145,7 @@ module NgrokAPI
       # @param [string] saml saml module configuration
       # @param [string] oidc oidc module configuration
       # @return [NgrokAPI::Models::EndpointConfiguration] result from update request
+      # rubocop:enable LineLength
       #
       # https://ngrok.com/docs/api#api-endpoint-configurations-update
       def update(
diff --git a/lib/ngrokapi/services/reserved_domains_client.rb b/lib/ngrokapi/services/reserved_domains_client.rb
index 072dd88..c961f1a 100644
--- a/lib/ngrokapi/services/reserved_domains_client.rb
+++ b/lib/ngrokapi/services/reserved_domains_client.rb
@@ -8,9 +8,9 @@ module NgrokAPI
     # https://ngrok.com/docs/api#api-reserved-domains
     class ReservedDomainsClient
       # The List Property from the resulting API for list calls
-      LIST_PROPERTY = 'reserved_domains'.freeze
+      LIST_PROPERTY = 'reserved_domains'
       # The API path for reserved domains
-      PATH = '/reserved_domains'.freeze
+      PATH = '/reserved_domains'
 
       attr_reader :client
 
@@ -21,6 +21,7 @@ module NgrokAPI
       ##
       # Create a new reserved domain.
       #
+      # rubocop:disable LineLength
       # @param [string] name the domain name to reserve. It may be a full domain name like app.example.com. If the name does not contain a '.' it will reserve that subdomain on ngrok.io.
       # @param [string] region reserve the domain in this geographic ngrok datacenter. Optional, default is us. (au, eu, ap, us, jp, in, sa)
       # @param [string] description human-readable description of what this reserved domain will be used for
@@ -30,6 +31,7 @@ module NgrokAPI
       # @param [string] certificate_id ID of a user-uploaded TLS certificate to use for connections to targeting this domain. Optional, mutually exclusive with ``certificate_management_policy``.
       # @param [string] certificate_management_policy configuration for automatic management of TLS certificates for this domain, or null if automatic management is disabled. Optional, mutually exclusive with ``certificate_id``.
       # @return [NgrokAPI::Models::ReservedDomain] result from create request
+      # rubocop:enable LineLength
       #
       # https://ngrok.com/docs/api#api-reserved-domains-create
       def create(
@@ -101,6 +103,7 @@ module NgrokAPI
       ##
       # Update the attributes of a reserved domain.
       #
+      # rubocop:disable LineLength
       # @param [string] id
       # @param [string] description human-readable description of what this reserved domain will be used for
       # @param [string] metadata arbitrary user-defined machine-readable data of this reserved domain. Optional, max 4096 bytes.
@@ -109,6 +112,7 @@ module NgrokAPI
       # @param [string] certificate_id ID of a user-uploaded TLS certificate to use for connections to targeting this domain. Optional, mutually exclusive with ``certificate_management_policy``.
       # @param [string] certificate_management_policy configuration for automatic management of TLS certificates for this domain, or null if automatic management is disabled. Optional, mutually exclusive with ``certificate_id``.
       # @return [NgrokAPI::Models::ReservedDomain] result from update request
+      # rubocop:enable LineLength
       #
       # https://ngrok.com/docs/api#api-reserved-domains-update
       def update(
diff --git a/lib/ngrokapi/services/tls_certificates_client.rb b/lib/ngrokapi/services/tls_certificates_client.rb
index 3eaaa98..80443ad 100644
--- a/lib/ngrokapi/services/tls_certificates_client.rb
+++ b/lib/ngrokapi/services/tls_certificates_client.rb
@@ -8,9 +8,9 @@ module NgrokAPI
     # https://ngrok.com/docs/api#api-tls-certificates
     class TlsCertificatesClient
       # The List Property from the resulting API for list calls
-      LIST_PROPERTY = 'tls_certificates'.freeze
+      LIST_PROPERTY = 'tls_certificates'
       # The API path for tls certificates
-      PATH = '/tls_certificates'.freeze
+      PATH = '/tls_certificates'
 
       attr_reader :client
 
@@ -21,11 +21,13 @@ module NgrokAPI
       ##
       # Upload a new TLS certificate.
       #
+      # rubocop:disable LineLength
       # @param [string] description human-readable description of this TLS certificate. optional, max 255 bytes.
       # @param [string] metadata arbitrary user-defined machine-readable data of this TLS certificate. optional, max 4096 bytes.
       # @param [string] certificate_pem chain of PEM-encoded certificates, leaf first. See `Certificate Bundles` <https://ngrok.com/docs/api#tls-certificates-pem>`_.
       # @param [string] private_key_pem private key for the TLS certificate, PEM-encoded. See `Private Keys` <https://ngrok.com/docs/ngrok-link#tls-certificates-key>`_.
       # @return [NgrokAPI::Models::TlsCertificate] result from create request
+      # rubocop:enable LineLength
       #
       # https://ngrok.com/docs/api#api-tls-certificates-create
       def create(
@@ -89,10 +91,12 @@ module NgrokAPI
       ##
       # Update attributes of a TLS Certificate by ID.
       #
+      # rubocop:disable LineLength
       # @param [string] id
       # @param [string] description human-readable description of this TLS certificate. optional, max 255 bytes.
       # @param [string] metadata arbitrary user-defined machine-readable data of this TLS certificate. optional, max 4096 bytes.
       # @return [NgrokAPI::Models::TlsCertificate] result from update request
+      # rubocop:enable LineLength
       #
       # https://ngrok.com/docs/api#api-tls-certificates-update
       def update(
diff --git a/spec/ngrokapi/models/listable_spec.rb b/spec/ngrokapi/models/listable_spec.rb
index b5abe83..a40d551 100644
--- a/spec/ngrokapi/models/listable_spec.rb
+++ b/spec/ngrokapi/models/listable_spec.rb
@@ -54,13 +54,13 @@ RSpec.describe NgrokAPI::Models::Listable do
   end
 
   describe "keys" do
-    it "should consistent of ApiKeys" do
+    it "consistent of ApiKeys" do
       expect(@listable.items.size).to eq @result['keys'].size
     end
   end
 
   describe "iter" do
-    it "should be a PagedIterator" do
+    it "is a PagedIterator" do
       expect(@listable.iter.class).to eq NgrokAPI::PagedIterator
     end
   end