diff --git a/devtools/hackdoc/helpers.go b/devtools/hackdoc/helpers.go
new file mode 100644
index 0000000..dd7269f
--- /dev/null
+++ b/devtools/hackdoc/helpers.go
@@ -0,0 +1,18 @@
+package main
+
+import (
+	"fmt"
+	"net/http"
+)
+
+func handle404(w http.ResponseWriter, r *http.Request) {
+	logRequest(w, r, "404")
+	w.WriteHeader(http.StatusNotFound)
+	fmt.Fprintf(w, "404!\n")
+}
+
+func handle500(w http.ResponseWriter, r *http.Request) {
+	logRequest(w, r, "500")
+	w.WriteHeader(http.StatusNotFound)
+	fmt.Fprintf(w, "500 :(\n")
+}