diff --git a/lib/shanty/artifact.rb b/lib/shanty/artifact.rb
new file mode 100644
index 0000000..b5f052c
--- /dev/null
+++ b/lib/shanty/artifact.rb
@@ -0,0 +1,56 @@
+require 'uri'
+require 'pathname'
+
+module Shanty
+  # Public: Contain information on an artifact published by a project
+  class Artifact
+    attr_reader :file_extension, :plugin, :uri
+
+    # Public: Initialise an artifact instance.
+    #
+    # file_extension - The extension of the artifact.
+    # plugin - The plugin publishing the artifact.
+    # uri - The URI to the object.
+    #
+    # Fails if the URI is not absolute or a scheme is missing.
+    def initialize(file_extension, plugin, uri)
+      @file_extension = file_extension
+      @plugin = plugin
+      @uri = uri
+
+      validate_uri
+    end
+
+    # Public: Whether the underlying URI of the artifact points to a local
+    # file path.
+    #
+    # Returns a Boolean representing whether the artifact is local.
+    def local?
+      @uri.scheme == 'file'
+    end
+
+    # Public: If the underlying artifact is stored locally, returns the path
+    # at which the artifact can be found.
+    #
+    # Returns a String representing the path at which the artifact can be found.
+    # Raises RuntimeError if the artifact is not local.
+    def to_local_path
+      return @uri.path if local?
+      fail 'URI is not a local resource'
+    end
+
+    # Public: A simple string representation of this artifact.
+    #
+    # Returns a String representing the URI at which this artifact can be found.
+    def to_s
+      @uri.to_s
+    end
+
+    private
+
+    def validate_uri
+      fail 'Scheme not present on URI' unless @uri.absolute?
+      fail 'URI is not absolute' if @uri.path.nil?
+    end
+  end
+end
diff --git a/lib/shanty/plugin.rb b/lib/shanty/plugin.rb
index dfcabbc..702d117 100644
--- a/lib/shanty/plugin.rb
+++ b/lib/shanty/plugin.rb
@@ -41,6 +41,10 @@ def projects
       end
     end
 
+    def artifacts(_)
+      []
+    end
+
     def with_graph(graph)
       callbacks = self.class.instance_variable_get(:@with_graph_callbacks)
       return [] if callbacks.nil? || callbacks.empty?
diff --git a/lib/shanty/plugins/bundler_plugin.rb b/lib/shanty/plugins/bundler_plugin.rb
index 6499941..141d6e0 100644
--- a/lib/shanty/plugins/bundler_plugin.rb
+++ b/lib/shanty/plugins/bundler_plugin.rb
@@ -8,7 +8,7 @@ class BundlerPlugin < Plugin
     projects '**/Gemfile'
     subscribe :build, :bundle_install
 
-    def bundle_install
+    def bundle_install(_)
       Bundler.with_clean_env do
         # FIXME: Add support for the --jobs argument to parallelise the bundler run.
         system 'bundle install --quiet'
diff --git a/lib/shanty/plugins/cucumber_plugin.rb b/lib/shanty/plugins/cucumber_plugin.rb
index 72a2d65..0747eb7 100644
--- a/lib/shanty/plugins/cucumber_plugin.rb
+++ b/lib/shanty/plugins/cucumber_plugin.rb
@@ -17,7 +17,7 @@ def cucumber_projects
       end
     end
 
-    def cucumber
+    def cucumber(_)
       system 'cucumber'
     end
   end
diff --git a/lib/shanty/plugins/rspec_plugin.rb b/lib/shanty/plugins/rspec_plugin.rb
index 6fd6366..feed6fc 100644
--- a/lib/shanty/plugins/rspec_plugin.rb
+++ b/lib/shanty/plugins/rspec_plugin.rb
@@ -17,7 +17,7 @@ def rspec_projects
       end
     end
 
-    def rspec
+    def rspec(_)
       system 'rspec'
     end
   end
diff --git a/lib/shanty/plugins/rubocop_plugin.rb b/lib/shanty/plugins/rubocop_plugin.rb
index 1c7241c..8ea2dba 100644
--- a/lib/shanty/plugins/rubocop_plugin.rb
+++ b/lib/shanty/plugins/rubocop_plugin.rb
@@ -7,7 +7,7 @@ class RubocopPlugin < Plugin
     projects '**/.rubocop.yml'
     subscribe :test, :rubocop
 
-    def rubocop
+    def rubocop(_)
       system 'rubocop'
     end
   end
diff --git a/lib/shanty/plugins/rubygem_plugin.rb b/lib/shanty/plugins/rubygem_plugin.rb
index 44519b9..ffd75df 100644
--- a/lib/shanty/plugins/rubygem_plugin.rb
+++ b/lib/shanty/plugins/rubygem_plugin.rb
@@ -1,14 +1,36 @@
 require 'shanty/plugin'
+require 'shanty/artifact'
 
 module Shanty
   # Public: Rubygem plugin for buildin gems.
   class RubygemPlugin < Plugin
+    ARTIFACT_EXTENSION = 'gem'
+
     tags :rubygem
     projects '**/*.gemspec'
     subscribe :build, :build_gem
 
-    def build_gem
-      system 'gem build *.gemspec'
+    def build_gem(project)
+      gemspec_files(project).each do |file|
+        system "gem build #{file}"
+      end
+    end
+
+    def artifacts(project)
+      gemspec_files(project).flat_map do |file|
+        gemspec = Gem::Specification.load(file)
+        Artifact.new(
+          ARTIFACT_EXTENSION,
+          'rubygem',
+          URI("file://#{project.path}/#{gemspec.name}-#{gemspec.version}.#{ARTIFACT_EXTENSION}")
+        )
+      end
+    end
+
+    private
+
+    def gemspec_files(project)
+      @gemspec_files ||= project_tree.glob(File.join(project.path, '*.gemspec'))
     end
   end
 end
diff --git a/lib/shanty/project.rb b/lib/shanty/project.rb
index a6ea843..dd8aeda 100644
--- a/lib/shanty/project.rb
+++ b/lib/shanty/project.rb
@@ -10,7 +10,7 @@ class Project
     include ActsAsGraphVertex
     include Env
 
-    attr_accessor :name, :path, :tags, :options
+    attr_accessor :artifacts, :name, :path, :tags, :options
 
     # Multiton or Flyweight pattern - only allow once instance per unique path.
     #
@@ -40,6 +40,7 @@ def initialize(path)
       @path = path
 
       @name = File.basename(path)
+      @artifacts = []
       @plugins = []
       @tags = []
       @options = {}
@@ -61,22 +62,22 @@ def all_tags
       (@tags + @plugins.flat_map { |plugin| plugin.class.tags }).map(&:to_sym).uniq
     end
 
+    # Public: The artifacts published by this project and any artifacts published
+    # by any plugins operating on this project.
+    #
+    # Returns the Array of Artifacts available for this project.
+    def all_artifacts
+      (@artifacts + @plugins.flat_map { |plugin| plugin.artifacts(project) }).uniq
+    end
+
     def publish(name, *args)
       @plugins.each do |plugin|
         next unless plugin.subscribed?(name)
         logger.info("Executing #{name} on the #{plugin.class} plugin...")
-        return false if plugin.publish(name, *args) == false
+        return false if plugin.publish(name, self, *args) == false
       end
     end
 
-    # Public: The absolute paths to the artifacts that would be created by this
-    # project when built, if any. This is expected to be overriden in subclasses.
-    #
-    # Returns an Array of Strings representing the absolute paths to the artifacts.
-    def artifact_paths
-      []
-    end
-
     # Public: Overriden String conversion method to return a simplified
     # representation of this instance that doesn't include the cyclic
     # parent/children attributes as defined by the ActsAsGraphVertex mixin.
diff --git a/spec/lib/shanty/artifact_spec.rb b/spec/lib/shanty/artifact_spec.rb
new file mode 100644
index 0000000..a9085af
--- /dev/null
+++ b/spec/lib/shanty/artifact_spec.rb
@@ -0,0 +1,44 @@
+require 'shanty/artifact'
+
+# All classes referenced belong to the shanty project
+module Shanty
+  RSpec.describe(Artifact) do
+    subject { described_class.new('html', 'test', uri) }
+    let(:relative_path_artifact) { described_class.new('html', 'test', URI('file:kim/cage.html')) }
+    let(:http_artifact) { described_class.new('html', 'test', URI('http://www.nic.com/kim/cage.html')) }
+    let(:schemless_artifact) { described_class.new('html', 'test', URI('kim/cage.html')) }
+
+    let(:uri) { URI('file:///nic/kim/cage.html') }
+
+    describe('.new') do
+      it('fails if the URI is not an absolute path') do
+        expect { relative_path_artifact }.to raise_error('URI is not absolute')
+      end
+
+      it('fails if there is no scheme present in the URI') do
+        expect { schemless_artifact }.to raise_error('Scheme not present on URI')
+      end
+    end
+
+    describe('#local?') do
+      it('returns false if the file is not a local file') do
+        expect(http_artifact.local?).to be(false)
+      end
+
+      it('returns true if the file is a local file') do
+        expect(subject.local?).to be(true)
+      end
+    end
+
+    describe('#to_local_path') do
+      it('throws an exception if the resource is not local') do
+        allow(subject).to receive(:local?).and_return(false)
+        expect { subject.to_local_path }.to raise_error('URI is not a local resource')
+      end
+
+      it('returns the path if the resource is local') do
+        expect(subject.to_local_path).to eql('/nic/kim/cage.html')
+      end
+    end
+  end
+end
diff --git a/spec/lib/shanty/plugins/bundler_plugin_spec.rb b/spec/lib/shanty/plugins/bundler_plugin_spec.rb
index 32c14b2..9667915 100644
--- a/spec/lib/shanty/plugins/bundler_plugin_spec.rb
+++ b/spec/lib/shanty/plugins/bundler_plugin_spec.rb
@@ -4,7 +4,7 @@
 # All classes referenced belong to the shanty project
 module Shanty
   RSpec.describe(BundlerPlugin) do
-    include_context('basics')
+    include_context('graph')
 
     it('adds the bundler tag') do
       expect(described_class).to add_tags(:bundler)
@@ -22,7 +22,7 @@ module Shanty
       it('calls bundler install') do
         expect(subject).to receive(:system).with('bundle install --quiet')
 
-        subject.bundle_install
+        subject.bundle_install(project)
       end
     end
   end
diff --git a/spec/lib/shanty/plugins/cucumber_plugin_spec.rb b/spec/lib/shanty/plugins/cucumber_plugin_spec.rb
index 8f72584..b22407c 100644
--- a/spec/lib/shanty/plugins/cucumber_plugin_spec.rb
+++ b/spec/lib/shanty/plugins/cucumber_plugin_spec.rb
@@ -42,7 +42,7 @@ module Shanty
       it('calls cucumber') do
         expect(subject).to receive(:system).with('cucumber')
 
-        subject.cucumber
+        subject.cucumber(project)
       end
     end
   end
diff --git a/spec/lib/shanty/plugins/rspec_plugin_spec.rb b/spec/lib/shanty/plugins/rspec_plugin_spec.rb
index 9e44846..27e3be3 100644
--- a/spec/lib/shanty/plugins/rspec_plugin_spec.rb
+++ b/spec/lib/shanty/plugins/rspec_plugin_spec.rb
@@ -43,7 +43,7 @@ module Shanty
       it('calls rspec') do
         expect(subject).to receive(:system).with('rspec')
 
-        subject.rspec
+        subject.rspec(project)
       end
     end
   end
diff --git a/spec/lib/shanty/plugins/rubocop_plugin_spec.rb b/spec/lib/shanty/plugins/rubocop_plugin_spec.rb
index e7f1507..601d995 100644
--- a/spec/lib/shanty/plugins/rubocop_plugin_spec.rb
+++ b/spec/lib/shanty/plugins/rubocop_plugin_spec.rb
@@ -4,7 +4,7 @@
 # All classes referenced belong to the shanty project
 module Shanty
   RSpec.describe(RubocopPlugin) do
-    include_context('basics')
+    include_context('graph')
 
     it('adds the rubocop tag') do
       expect(described_class).to add_tags(:rubocop)
@@ -22,7 +22,7 @@ module Shanty
       it('calls rubocop') do
         expect(subject).to receive(:system).with('rubocop')
 
-        subject.rubocop
+        subject.rubocop(project)
       end
     end
   end
diff --git a/spec/lib/shanty/plugins/rubygem_plugin_spec.rb b/spec/lib/shanty/plugins/rubygem_plugin_spec.rb
index 453e72e..53aba26 100644
--- a/spec/lib/shanty/plugins/rubygem_plugin_spec.rb
+++ b/spec/lib/shanty/plugins/rubygem_plugin_spec.rb
@@ -1,10 +1,21 @@
 require 'spec_helper'
+require 'fileutils'
 require 'shanty/plugins/rubygem_plugin'
 
 # All classes referenced belong to the shanty project
 module Shanty
   RSpec.describe(RubygemPlugin) do
-    include_context('basics')
+    include_context('graph')
+    let(:gemspec_path) { File.join(project_path, 'foo.gemspec') }
+
+    before do
+      File.write(gemspec_path, <<-eof)
+        Gem::Specification.new do |gem|
+          gem.name = 'foo'
+          gem.version = '1.2.3'
+        end
+      eof
+    end
 
     it('adds the rubygem tag') do
       expect(described_class).to add_tags(:rubygem)
@@ -20,9 +31,23 @@ module Shanty
 
     describe('#build_gem') do
       it('calls gem build') do
-        expect(subject).to receive(:system).with('gem build *.gemspec')
+        expect(subject).to receive(:system).with("gem build #{gemspec_path}")
+
+        subject.build_gem(project)
+      end
+    end
+
+    describe('#artifacts') do
+      let(:gem_path) { File.join(project_path, 'foo-1.2.3.gem') }
+
+      it('lists the project artifacts') do
+        result = subject.artifacts(project)
 
-        subject.build_gem
+        expect(result.length).to eql(1)
+        expect(result.first.to_local_path).to eql(gem_path)
+        expect(result.first.file_extension).to eql('gem')
+        expect(result.first.local?).to be true
+        expect(result.first.uri.scheme).to eql('file')
       end
     end
   end
diff --git a/spec/lib/shanty/project_spec.rb b/spec/lib/shanty/project_spec.rb
index d6d3e43..503889f 100644
--- a/spec/lib/shanty/project_spec.rb
+++ b/spec/lib/shanty/project_spec.rb
@@ -68,7 +68,7 @@ module Shanty
       it('publishes the event on any listening plugins') do
         allow(plugin).to receive(:subscribed?).and_return(true)
 
-        expect(plugin).to receive(:publish).with(:foo, :bar, :lux)
+        expect(plugin).to receive(:publish).with(:foo, subject, :bar, :lux)
 
         subject.publish(:foo, :bar, :lux)
       end
@@ -84,9 +84,9 @@ module Shanty
       end
     end
 
-    describe('#artifact_paths') do
-      it('defaults the paths to an empty array') do
-        expect(subject.artifact_paths).to eql([])
+    describe('#all_artifacts') do
+      it('defaults the artifacts to an empty array') do
+        expect(subject.all_artifacts).to eql([])
       end
     end