diff --git a/bgpwtf/cccampix/proto/ix.proto b/bgpwtf/cccampix/proto/ix.proto
new file mode 100644
index 0000000..73bc4d1
--- /dev/null
+++ b/bgpwtf/cccampix/proto/ix.proto
@@ -0,0 +1,26 @@
+syntax = "proto3";
+package ix;
+
+message GetIXMembersRequest {
+    // IX ID from PeeringDB
+    int64 id = 1;
+}
+
+message GetIXMembersResponse {
+    message Member {
+        int64 asn = 1;
+        // Per PeeringDB, at least one of the following two address families
+        // will be set.
+        string ipv4 = 2;
+        string ipv6 = 3;
+        // AS/network name.
+        string name = 4;
+    };
+
+    repeated Member members = 1;
+}
+
+service PeeringDBProxy {
+    // GetIXMembers returns information about membership of a given PeeringDB IX.
+    rpc GetIXMembers(GetIXMembersRequest) returns (GetIXMembersResponse);
+}