diff --git a/libraries/chain/CMakeLists.txt b/libraries/chain/CMakeLists.txt
index c49cefbeb6a857260c9a5f89cc98f6a25bfb34f6..c2ed25de31cc411a8d85661595efdaf89e24b58b 100644
--- a/libraries/chain/CMakeLists.txt
+++ b/libraries/chain/CMakeLists.txt
@@ -14,6 +14,8 @@ add_library( eos_chain
              block_log.cpp
              BlockchainConfiguration.cpp
 
+             types.cpp
+
              ${HEADERS}
            )
 
diff --git a/libraries/chain/include/eos/chain/type_object.hpp b/libraries/chain/include/eos/chain/type_object.hpp
index 476736495678cdb760439cf78bdaafed3eb796b1..8817717edaa21d3ef02b6b3faa8d4704d6236706 100644
--- a/libraries/chain/include/eos/chain/type_object.hpp
+++ b/libraries/chain/include/eos/chain/type_object.hpp
@@ -38,6 +38,7 @@ namespace eos { namespace chain {
       TypeName              base;
       shared_vector<Field>  fields;
    };
+   using type_id_type = type_object::id_type;
 
    struct by_scope_name;
    using type_index = chainbase::shared_multi_index_container<
@@ -57,4 +58,6 @@ namespace eos { namespace chain {
 
 CHAINBASE_SET_INDEX_TYPE(eos::chain::type_object, eos::chain::type_index)
 
+FC_REFLECT(chainbase::oid<eos::chain::type_object>, (_id))
+
 FC_REFLECT(eos::chain::type_object, (id)(scope)(name)(base_scope)(base)(fields) )
diff --git a/libraries/chain/include/eos/chain/types.hpp b/libraries/chain/include/eos/chain/types.hpp
index 64852f1c03331662ab68b52b270089dfc0deb47a..088a6bda5a4915e3fc988d949e0d9681313512d3 100644
--- a/libraries/chain/include/eos/chain/types.hpp
+++ b/libraries/chain/include/eos/chain/types.hpp
@@ -179,6 +179,11 @@ namespace eos { namespace chain {
    
 } }  // eos::chain
 
+namespace fc {
+  void to_variant(const shared_vector<eos::types::Field>& c, fc::variant& v);
+  void from_variant(const fc::variant& v, shared_vector<eos::types::Field>& fields);
+}
+
 FC_REFLECT_ENUM(eos::chain::object_type,
                 (null_object_type)
                 (account_object_type)
diff --git a/libraries/chain/types.cpp b/libraries/chain/types.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..9a1c5e4860e49d09048169cc892565266ae8bf5c
--- /dev/null
+++ b/libraries/chain/types.cpp
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2017, Respective Authors.
+ *
+ * The MIT License
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include <eos/chain/types.hpp>
+
+namespace fc {
+  using eos::chain::shared_vector;
+  void to_variant(const shared_vector<eos::types::Field>& c, fc::variant& v) {
+     fc::mutable_variant_object mvo; mvo.reserve(c.size());
+     for(const auto& f : c) {
+        mvo.set(f.name, eos::types::String(f.type));
+     }
+     v = std::move(mvo);
+  }
+  void from_variant(const fc::variant& v, shared_vector<eos::types::Field>& fields) {
+     const auto& obj = v.get_object();
+     fields.reserve(obj.size());
+     for(const auto& f : obj)
+        fields.emplace_back(eos::types::Field{ f.key(), f.value().get_string() });
+  }
+}