diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5af89d7..1991a9f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@
 
 The "Signs And Portents" Update
 
+Added `Cuprum.initializer` to initialize dependencies and error messages. Call `Cuprum.initializer.call` in the entry point or initializers of your application to avoid missing error messages.
+
 ### Results
 
 Added `Result.success` and `Result.failure`, which provide singleton results with respective `:success` and `:failure` statuses.
diff --git a/Gemfile b/Gemfile
index 0e1745c..491bbc1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -23,6 +23,7 @@ end
 group :docs do
   gem 'jekyll', '~> 4.3'
   gem 'jekyll-theme-dinky', '~> 0.2'
+  gem 'logger', '~> 1.7'
 
   # Use Kramdown to parse GFM-dialect Markdown.
   gem 'kramdown-parser-gfm', '~> 1.1'
diff --git a/docs/_constants/cuprum/error/type.yml b/docs/_constants/cuprum/error/type.yml
index 1f2d277..74a9ded 100644
--- a/docs/_constants/cuprum/error/type.yml
+++ b/docs/_constants/cuprum/error/type.yml
@@ -6,7 +6,7 @@ short_description: Short string used to identify the type of error.
 value: "'cuprum.error'"
 data_path: cuprum/error/type
 description: |-
-  Primarily used for serialization. This value can be overriden by passing
+  Primarily used for serialization. This value can be overridden by passing
   in the :type parameter to the constructor.
 
   Subclasses of Cuprum::Error should define their own default TYPE constant.
diff --git a/docs/_methods/cuprum/c-initializer.yml b/docs/_methods/cuprum/c-initializer.yml
new file mode 100644
index 0000000..d4e5261
--- /dev/null
+++ b/docs/_methods/cuprum/c-initializer.yml
@@ -0,0 +1,14 @@
+---
+name: Cuprum.initializer
+parent_path: cuprum
+signature: initializer
+slug: initializer
+constructor: false
+data_path: cuprum/c-initializer
+returns:
+- description: |-
+    the initializer
+    for the module.
+  type:
+  - name: SleepingKingStudios::Tools::Toolbox::Initializer
+version: "*"
diff --git a/docs/_methods/cuprum/error/i-as-json.yml b/docs/_methods/cuprum/error/i-as-json.yml
index a195331..d6b6bdd 100644
--- a/docs/_methods/cuprum/error/i-as-json.yml
+++ b/docs/_methods/cuprum/error/i-as-json.yml
@@ -7,9 +7,9 @@ constructor: false
 data_path: cuprum/error/i-as-json
 description: |-
   By default, contains the #type and #message properties and an empty :data
-  Hash. This can be overriden in subclasses by overriding the private method
-  #as_json_data; this should always return a Hash with String keys and whose
-  values are basic objects or data structures of the same.
+  Hash. This can be overridden in subclasses by overriding the private
+  method #as_json_data; this should always return a Hash with String keys
+  and whose values are basic objects or data structures of the same.
 returns:
 - description: |-
     a serializable hash representation of the
diff --git a/docs/_modules/cuprum.yml b/docs/_modules/cuprum.yml
index eaf04f7..3d042a3 100644
--- a/docs/_modules/cuprum.yml
+++ b/docs/_modules/cuprum.yml
@@ -28,6 +28,13 @@ files:
 - lib/cuprum/parameter_validation.rb
 parent_path: ''
 short_description: Toolkit for implementing business logic as function objects.
+class_attributes:
+- name: initializer
+  read: true
+  write: false
+  path: cuprum/c-initializer
+  slug: initializer
+  inherited: false
 class_methods:
 - name: version
   path: cuprum/c-version
diff --git a/docs/index.md b/docs/index.md
index 2d982e5..d31fcb3 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -15,6 +15,34 @@ This is the documentation for the [current development build](https://github.com
 - For the most recent release, see [Version 1.3]({{site.baseurl}}/versions/1.3).
 - For previous releases, see the [Versions]({{site.baseurl}}/versions) page.
 
+## Getting Started
+
+Add the gem to your `Gemfile` or `gemspec`:
+
+```ruby
+gem 'cuprum'
+```
+
+Require `Cuprum` in your code:
+
+```ruby
+require 'cuprum'
+```
+
+To ensure that error message definitions are loaded, call the `Cuprum` initializer:
+
+- In the [initializer](./initializer) for your project:
+
+  ```ruby
+  module Space
+    @initializer = SleepingKingStudios::Tools::Toolbox::Initializer.new do
+      Cuprum.initializer.call
+    end
+  end
+  ```
+
+- Or, in the entry points of your application (such as a `bin` script or `spec_helper.rb`).
+
 ## Reference
 
 Cuprum defines the following core components:
diff --git a/lib/cuprum.rb b/lib/cuprum.rb
index bea2881..71ec41d 100644
--- a/lib/cuprum.rb
+++ b/lib/cuprum.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require 'sleeping_king_studios/tools/toolbox/initializer'
+
 # Toolkit for implementing business logic as function objects.
 module Cuprum
   autoload :Command,             'cuprum/command'
@@ -16,7 +18,15 @@ module Cuprum
   autoload :ResultList,          'cuprum/result_list'
   autoload :Steps,               'cuprum/steps'
 
+  @initializer = SleepingKingStudios::Tools::Toolbox::Initializer.new do
+    SleepingKingStudios::Tools.initializer.call
+  end
+
   class << self
+    # @return [SleepingKingStudios::Tools::Toolbox::Initializer] the initializer
+    #   for the module.
+    attr_reader :initializer
+
     # @return [String] the current version of the gem.
     def version
       VERSION
diff --git a/lib/cuprum/error.rb b/lib/cuprum/error.rb
index 0c97373..f4e5f1a 100644
--- a/lib/cuprum/error.rb
+++ b/lib/cuprum/error.rb
@@ -52,7 +52,7 @@ module Cuprum
   class Error
     # Short string used to identify the type of error.
     #
-    # Primarily used for serialization. This value can be overriden by passing
+    # Primarily used for serialization. This value can be overridden by passing
     # in the :type parameter to the constructor.
     #
     # Subclasses of Cuprum::Error should define their own default TYPE constant.
@@ -86,9 +86,9 @@ def ==(other)
     # Generates a serializable representation of the error object.
     #
     # By default, contains the #type and #message properties and an empty :data
-    # Hash. This can be overriden in subclasses by overriding the private method
-    # #as_json_data; this should always return a Hash with String keys and whose
-    # values are basic objects or data structures of the same.
+    # Hash. This can be overridden in subclasses by overriding the private
+    # method #as_json_data; this should always return a Hash with String keys
+    # and whose values are basic objects or data structures of the same.
     #
     # @return [Hash<String, Object>] a serializable hash representation of the
     #   error.
diff --git a/spec/cuprum_spec.rb b/spec/cuprum_spec.rb
index 276466b..f558ddb 100644
--- a/spec/cuprum_spec.rb
+++ b/spec/cuprum_spec.rb
@@ -11,7 +11,13 @@
     end
   end
 
-  describe '::version' do
+  describe '.initializer' do
+    include_examples 'should define class reader',
+      :initializer,
+      -> { be_a(SleepingKingStudios::Tools::Toolbox::Initializer) }
+  end
+
+  describe '.version' do
     it 'should define the reader' do
       expect(described_class)
         .to have_reader(:version)
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index a3354d4..244f7d9 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,18 +1,20 @@
 # frozen_string_literal: true
 
+require 'rspec/sleeping_king_studios/all'
+require 'byebug'
+
 unless ENV['COVERAGE'] == 'false'
   require 'simplecov'
 
   SimpleCov.start
 end
 
-require 'rspec/sleeping_king_studios/all'
-require 'byebug'
+require 'cuprum'
 
 # Isolated namespace for defining spec-only or transient objects.
 module Spec; end
 
-SleepingKingStudios::Tools.initializer.call
+Cuprum.initializer.call
 
 require 'support/matrix'