diff --git a/lib/kangaru/application.rb b/lib/kangaru/application.rb
index b13e0f2..d1e0445 100644
--- a/lib/kangaru/application.rb
+++ b/lib/kangaru/application.rb
@@ -18,6 +18,12 @@ def setup
       autoloader.setup
     end
 
+    def run!(argv)
+      command = Command.parse(argv)
+
+      Router.new(command, namespace:).resolve
+    end
+
     private
 
     def autoloader
diff --git a/sig/kangaru/application.rbs b/sig/kangaru/application.rbs
index 3282811..c57dfc9 100644
--- a/sig/kangaru/application.rbs
+++ b/sig/kangaru/application.rbs
@@ -12,6 +12,8 @@ module Kangaru
 
     def setup: -> void
 
+    def run!: (Array[String]) -> void
+
     private
 
     attr_reader autoloader: Zeitwerk::Loader
diff --git a/spec/kangaru/application_spec.rb b/spec/kangaru/application_spec.rb
index 7e050a1..eeca991 100644
--- a/spec/kangaru/application_spec.rb
+++ b/spec/kangaru/application_spec.rb
@@ -55,4 +55,34 @@
       expect(loader).to have_received(:setup).once
     end
   end
+
+  describe "#run!" do
+    subject(:run!) { application.run!(argv) }
+
+    let(:argv) { %w[foo bar baz] }
+
+    let(:command) { instance_spy(Kangaru::Command) }
+
+    let(:router) { instance_spy(Kangaru::Router) }
+
+    before do
+      allow(Kangaru::Command).to receive(:parse).and_return(command)
+      allow(Kangaru::Router).to receive(:new).and_return(router)
+    end
+
+    it "parses the arguments into a command" do
+      run!
+      expect(Kangaru::Command).to have_received(:parse).with(argv)
+    end
+
+    it "instantiates a router" do
+      run!
+      expect(Kangaru::Router).to have_received(:new).with(command, namespace:)
+    end
+
+    it "resolves the request" do
+      run!
+      expect(router).to have_received(:resolve)
+    end
+  end
 end