diff --git a/dev-lang/spidermonkey/metadata.xml b/dev-lang/spidermonkey/metadata.xml
new file mode 100644
--- /dev/null
+++ b/dev-lang/spidermonkey/metadata.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer>
+		<email>djc@gentoo.org</email>
+		<name>Dirkjan Ochtman</name>
+	</maintainer>
+	<maintainer>
+		<email>anarchy@gentoo.org</email>
+		<name>Jory A. Pratt</name>
+	</maintainer>
+	<herd>mozilla</herd>
+	<longdescription lang="en">
+		Stand-alone JavaScript C library
+	</longdescription>
+	<use>
+		<flag name='threadsafe'>Build a threadsafe version of spidermonkey</flag>
+	</use>
+</pkgmetadata>
+