diff --git a/Stellar-contract-meta.x b/Stellar-contract-meta.x
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+// Copyright 2022 Stellar Development Foundation and contributors. Licensed
+// under the Apache License, Version 2.0. See the COPYING file at the root
+// of this distribution or at http://www.apache.org/licenses/LICENSE-2.0
+
+// The contract spec XDR is highly experimental, incomplete, and still being
+// iterated on. Breaking changes expected.
+
+% #include "xdr/Stellar-types.h"
+namespace stellar
+{
+
+struct SCMetaV0
+{
+    string key<10>;
+    string val<256>;
+};
+
+enum SCMetaKind
+{
+    SC_META_V0 = 0
+};
+
+union SCMetaEntry switch (SCMetaKind kind)
+{
+case SC_META_V0:
+    SCMetaV0 v0;
+};
+
+}