diff --git a/metropolis/test/ktest/main.go b/metropolis/test/ktest/main.go
new file mode 100644
index 0000000..7f750b8
--- /dev/null
+++ b/metropolis/test/ktest/main.go
@@ -0,0 +1,75 @@
+// Copyright 2020 The Monogon Project Authors.
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// ktest is a test launcher for running tests inside a custom kernel and passes the results
+// back out.
+package main
+
+import (
+	"context"
+	"flag"
+	"io"
+	"log"
+	"os"
+	"time"
+
+	"git.monogon.dev/source/nexantic.git/metropolis/test/launch"
+)
+
+var (
+	kernelPath = flag.String("kernel-path", "", "Path of the Kernel ELF file")
+	initrdPath = flag.String("initrd-path", "", "Path of the initrd image")
+	cmdline    = flag.String("cmdline", "", "Additional kernel command line options")
+)
+
+func main() {
+	flag.Parse()
+
+	hostFeedbackConn, vmFeedbackConn, err := launch.NewSocketPair()
+	if err != nil {
+		log.Fatalf("Failed to create socket pair: %v", err)
+	}
+
+	exitCodeChan := make(chan uint8, 1)
+
+	go func() {
+		defer hostFeedbackConn.Close()
+
+		returnCode := make([]byte, 1)
+		if _, err := io.ReadFull(hostFeedbackConn, returnCode); err != nil {
+			log.Fatalf("Failed to read socket: %v", err)
+		}
+		exitCodeChan <- returnCode[0]
+	}()
+
+	if err := launch.RunMicroVM(context.Background(), &launch.MicroVMOptions{
+		KernelPath:                  *kernelPath,
+		InitramfsPath:               *initrdPath,
+		Cmdline:                     *cmdline,
+		SerialPort:                  os.Stdout,
+		ExtraChardevs:               []*os.File{vmFeedbackConn},
+		DisableHostNetworkInterface: true,
+	}); err != nil {
+		log.Fatalf("Failed to run ktest VM: %v", err)
+	}
+
+	select {
+	case exitCode := <-exitCodeChan:
+		os.Exit(int(exitCode))
+	case <-time.After(1 * time.Second):
+		log.Fatal("Failed to get an error code back (test runtime probably crashed)")
+	}
+}