diff --git a/exe/ddcirb b/exe/ddcirb
index 2575638e..f91a0bc2 100755
--- a/exe/ddcirb
+++ b/exe/ddcirb
@@ -2,4 +2,6 @@
 
 require "datadog/ci/cli/cli"
 
-Datadog::CI::CLI.exec(ARGV.first)
+command = ARGV.shift
+
+Datadog::CI::CLI.exec(command, ARGV)
diff --git a/lib/datadog/ci/cli/cli.rb b/lib/datadog/ci/cli/cli.rb
index 99df9df9..cb061a83 100644
--- a/lib/datadog/ci/cli/cli.rb
+++ b/lib/datadog/ci/cli/cli.rb
@@ -1,14 +1,17 @@
 require "datadog"
 require "datadog/ci"
 
+require_relative "command/exec"
 require_relative "command/skippable_tests_percentage"
 require_relative "command/skippable_tests_percentage_estimate"
 
 module Datadog
   module CI
     module CLI
-      def self.exec(action)
+      def self.exec(action, args = [])
         case action
+        when "exec"
+          Command::Exec.new(args).exec
         when "skipped-tests", "skippable-tests"
           Command::SkippableTestsPercentage.new.exec
         when "skipped-tests-estimate", "skippable-tests-estimate"
@@ -17,6 +20,7 @@ def self.exec(action)
           puts("Usage: bundle exec ddcirb [command] [options]. Available commands:")
           puts("  skippable-tests - calculates the exact percentage of skipped tests and prints it to stdout or file")
           puts("  skippable-tests-estimate - estimates the percentage of skipped tests and prints it to stdout or file")
+          puts("  exec YOUR_TEST_COMMAND - automatically instruments your test command with Datadog and executes it")
         end
       end
     end
diff --git a/lib/datadog/ci/cli/command/exec.rb b/lib/datadog/ci/cli/command/exec.rb
new file mode 100644
index 00000000..a8b2ae29
--- /dev/null
+++ b/lib/datadog/ci/cli/command/exec.rb
@@ -0,0 +1,29 @@
+require_relative "base"
+require_relative "../../test_optimisation/skippable_percentage/estimator"
+
+module Datadog
+  module CI
+    module CLI
+      module Command
+        class Exec < Base
+          def initialize(args)
+            super()
+
+            @args = args
+          end
+
+          def exec
+            rubyopts = [
+              "-rdatadog/ci/auto_instrument"
+            ]
+
+            existing_rubyopt = ENV["RUBYOPT"]
+            ENV["RUBYOPT"] = existing_rubyopt ? "#{existing_rubyopt} #{rubyopts.join(" ")}" : rubyopts.join(" ")
+
+            Kernel.exec(*@args)
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/sig/datadog/ci/cli/cli.rbs b/sig/datadog/ci/cli/cli.rbs
index 45e48a8f..12c5231e 100644
--- a/sig/datadog/ci/cli/cli.rbs
+++ b/sig/datadog/ci/cli/cli.rbs
@@ -1,7 +1,7 @@
 module Datadog
   module CI
     module CLI
-      def self.exec: (String action) -> void
+      def self.exec: (String action, ?Array[String] args) -> void
     end
   end
 end
diff --git a/sig/datadog/ci/cli/command/exec.rbs b/sig/datadog/ci/cli/command/exec.rbs
new file mode 100644
index 00000000..36b0d03a
--- /dev/null
+++ b/sig/datadog/ci/cli/command/exec.rbs
@@ -0,0 +1,15 @@
+module Datadog
+  module CI
+    module CLI
+      module Command
+        class Exec < Base
+          @args: Array[String]
+
+          def initialize: (Array[String] args) -> void
+
+          def exec: () -> void
+        end
+      end
+    end
+  end
+end
diff --git a/spec/datadog/ci/cli/cli_spec.rb b/spec/datadog/ci/cli/cli_spec.rb
index 3d6c8011..4485ad19 100644
--- a/spec/datadog/ci/cli/cli_spec.rb
+++ b/spec/datadog/ci/cli/cli_spec.rb
@@ -36,6 +36,7 @@
           Usage: bundle exec ddcirb [command] [options]. Available commands:
             skippable-tests - calculates the exact percentage of skipped tests and prints it to stdout or file
             skippable-tests-estimate - estimates the percentage of skipped tests and prints it to stdout or file
+            exec YOUR_TEST_COMMAND - automatically instruments your test command with Datadog and executes it
         USAGE
       end
     end