diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1b25e37..f56a321 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -66,6 +66,8 @@ add_library (cruft-vk-icd STATIC
     ${GENERATED_PREFIX}/icd/vtable.hpp
     ${GENERATED_PREFIX}/icd/dispatch.cpp
     icd/dispatch.hpp
+    icd/ostream.cpp
+    icd/ostream.hpp
     icd/vendor.hpp
     icd/vendor.cpp
     icd/vendor_${VK_LOADER_VENDOR}
diff --git a/icd/fwd.hpp b/icd/fwd.hpp
index e69de29..703146d 100644
--- a/icd/fwd.hpp
+++ b/icd/fwd.hpp
@@ -0,0 +1,14 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * Copyright 2019 Danny Robson <danny@nerdcruft.net>
+ */
+
+#pragma once
+
+
+namespace cruft::vk::icd {
+    struct icd_t;
+}
diff --git a/icd/ostream.cpp b/icd/ostream.cpp
new file mode 100644
index 0000000..b17ba16
--- /dev/null
+++ b/icd/ostream.cpp
@@ -0,0 +1,22 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * Copyright 2019 Danny Robson <danny@nerdcruft.net>
+ */
+
+#include "ostream.hpp"
+
+#include "vendor.hpp"
+
+
+///////////////////////////////////////////////////////////////////////////////
+std::ostream&
+cruft::vk::icd::operator<< (std::ostream &os, icd_t const &value)
+{
+    return os << "{ file_format_version: '" << value.file_format_version << "'"
+              << ", icd: { library_path: '" << value.icd.library_path << "'"
+              <<        ", api_version: '" << value.icd.api_version << "'"
+              << " } }";
+};
diff --git a/icd/ostream.hpp b/icd/ostream.hpp
new file mode 100644
index 0000000..d22156a
--- /dev/null
+++ b/icd/ostream.hpp
@@ -0,0 +1,17 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * Copyright 2019 Danny Robson <danny@nerdcruft.net>
+ */
+
+#pragma once
+
+#include "fwd.hpp"
+
+#include <iosfwd>
+
+namespace cruft::vk::icd {
+    std::ostream& operator<< (std::ostream&, icd_t const&);
+}