diff --git a/headers/meta.hpp/meta_all.hpp b/headers/meta.hpp/meta_all.hpp
index fb0bc4e..1037a7a 100644
--- a/headers/meta.hpp/meta_all.hpp
+++ b/headers/meta.hpp/meta_all.hpp
@@ -9,3 +9,4 @@
 #include "meta_fwd.hpp"
 #include "meta_infos.hpp"
 #include "meta_registry.hpp"
+#include "meta_utilities.hpp"
diff --git a/headers/meta.hpp/meta_fwd.hpp b/headers/meta.hpp/meta_fwd.hpp
index cc8e0c7..19ff1ac 100644
--- a/headers/meta.hpp/meta_fwd.hpp
+++ b/headers/meta.hpp/meta_fwd.hpp
@@ -52,3 +52,19 @@ namespace meta_hpp
     template < typename Method > class method_;
     class namespace_;
 }
+
+namespace meta_hpp
+{
+    template < typename K, typename V >
+    using info_map = std::map<K, V, std::less<>>;
+
+    using class_info_map = info_map<std::string, class_info>;
+    using ctor_info_map = info_map<std::string, ctor_info>;
+    using data_info_map = info_map<std::string, data_info>;
+    using enum_info_map = info_map<std::string, enum_info>;
+    using evalue_info_map = info_map<std::string, evalue_info>;
+    using function_info_map = info_map<std::string, function_info>;
+    using member_info_map = info_map<std::string, member_info>;
+    using method_info_map = info_map<std::string, method_info>;
+    using namespace_info_map = info_map<std::string, namespace_info>;
+}
diff --git a/headers/meta.hpp/meta_infos/class_info.hpp b/headers/meta.hpp/meta_infos/class_info.hpp
index 20d7bc7..64971b6 100644
--- a/headers/meta.hpp/meta_infos/class_info.hpp
+++ b/headers/meta.hpp/meta_infos/class_info.hpp
@@ -6,6 +6,9 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
 namespace meta_hpp
 {
     class class_info final {
diff --git a/headers/meta.hpp/meta_infos/ctor_info.hpp b/headers/meta.hpp/meta_infos/ctor_info.hpp
index 770d0a6..3012a5c 100644
--- a/headers/meta.hpp/meta_infos/ctor_info.hpp
+++ b/headers/meta.hpp/meta_infos/ctor_info.hpp
@@ -6,6 +6,9 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
 namespace meta_hpp
 {
     class ctor_info final {
diff --git a/headers/meta.hpp/meta_infos/data_info.hpp b/headers/meta.hpp/meta_infos/data_info.hpp
index faf7811..1f5dd9e 100644
--- a/headers/meta.hpp/meta_infos/data_info.hpp
+++ b/headers/meta.hpp/meta_infos/data_info.hpp
@@ -6,6 +6,9 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
 namespace meta_hpp
 {
     class data_info final {
diff --git a/headers/meta.hpp/meta_infos/enum_info.hpp b/headers/meta.hpp/meta_infos/enum_info.hpp
index b21b7f4..6430153 100644
--- a/headers/meta.hpp/meta_infos/enum_info.hpp
+++ b/headers/meta.hpp/meta_infos/enum_info.hpp
@@ -6,6 +6,9 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
 namespace meta_hpp
 {
     class enum_info final {
diff --git a/headers/meta.hpp/meta_infos/evalue_info.hpp b/headers/meta.hpp/meta_infos/evalue_info.hpp
index c19ca79..13db9d5 100644
--- a/headers/meta.hpp/meta_infos/evalue_info.hpp
+++ b/headers/meta.hpp/meta_infos/evalue_info.hpp
@@ -6,6 +6,9 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
 namespace meta_hpp
 {
     class evalue_info final {
diff --git a/headers/meta.hpp/meta_infos/function_info.hpp b/headers/meta.hpp/meta_infos/function_info.hpp
index 74f911c..f84237c 100644
--- a/headers/meta.hpp/meta_infos/function_info.hpp
+++ b/headers/meta.hpp/meta_infos/function_info.hpp
@@ -6,6 +6,9 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
 namespace meta_hpp
 {
     class function_info final {
diff --git a/headers/meta.hpp/meta_infos/member_info.hpp b/headers/meta.hpp/meta_infos/member_info.hpp
index 8fd680e..d1bb8d3 100644
--- a/headers/meta.hpp/meta_infos/member_info.hpp
+++ b/headers/meta.hpp/meta_infos/member_info.hpp
@@ -6,6 +6,9 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
 namespace meta_hpp
 {
     class member_info final {
diff --git a/headers/meta.hpp/meta_infos/method_info.hpp b/headers/meta.hpp/meta_infos/method_info.hpp
index 591fabf..97483b0 100644
--- a/headers/meta.hpp/meta_infos/method_info.hpp
+++ b/headers/meta.hpp/meta_infos/method_info.hpp
@@ -6,6 +6,9 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
 namespace meta_hpp
 {
     class method_info final {
diff --git a/headers/meta.hpp/meta_infos/namespace_info.hpp b/headers/meta.hpp/meta_infos/namespace_info.hpp
index 5f17f32..855765f 100644
--- a/headers/meta.hpp/meta_infos/namespace_info.hpp
+++ b/headers/meta.hpp/meta_infos/namespace_info.hpp
@@ -6,6 +6,9 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
 namespace meta_hpp
 {
     class namespace_info final {
diff --git a/headers/meta.hpp/meta_registry.hpp b/headers/meta.hpp/meta_registry.hpp
index bbbccd8..dbc2616 100644
--- a/headers/meta.hpp/meta_registry.hpp
+++ b/headers/meta.hpp/meta_registry.hpp
@@ -33,5 +33,134 @@ namespace meta_hpp
         member_info get_member_by_name(std::string_view name) const noexcept;
         method_info get_method_by_name(std::string_view name) const noexcept;
         namespace_info get_namespace_by_name(std::string_view name) const noexcept;
+    public:
+        template < typename... Internals >
+        registry& operator()(Internals&&... internals);
+    private:
+        template < typename Class >
+        void add_(const std::string& prefix, const class_<Class>& internal);
+        void add_(const std::string& prefix, const data_& internal);
+        template < typename Enum >
+        void add_(const std::string& prefix, const enum_<Enum>& internal);
+        template < typename Function >
+        void add_(const std::string& prefix, const function_<Function>& internal);
+        template < typename Member >
+        void add_(const std::string& prefix, const member_<Member>& internal);
+        template < typename Method >
+        void add_(const std::string& prefix, const method_<Method>& internal);
+        void add_(const std::string& prefix, const namespace_& internal);
+        void add_(const std::string& prefix, ...) = delete;
+    private:
+        void add_info_(const std::string& prefix, const class_info& info);
+        void add_info_(const std::string& prefix, const ctor_info& info);
+        void add_info_(const std::string& prefix, const data_info& info);
+        void add_info_(const std::string& prefix, const enum_info& info);
+        void add_info_(const std::string& prefix, const evalue_info& info);
+        void add_info_(const std::string& prefix, const function_info& info);
+        void add_info_(const std::string& prefix, const member_info& info);
+        void add_info_(const std::string& prefix, const method_info& info);
+        void add_info_(const std::string& prefix, const namespace_info& info);
+    private:
+        class_info_map classes_;
+        data_info_map datas_;
+        enum_info_map enums_;
+        evalue_info_map evalues_;
+        function_info_map functions_;
+        member_info_map members_;
+        method_info_map methods_;
+        namespace_info_map namespaces_;
     };
 }
+
+namespace meta_hpp
+{
+    template < typename... Internals >
+    inline registry& registry::operator()(Internals&&... internals) {
+        (add_(std::string{}, std::forward<Internals>(internals)), ...);
+        return *this;
+    }
+}
+
+namespace meta_hpp
+{
+    template < typename Class >
+    inline void registry::add_(const std::string& prefix, const class_<Class>& internal) {
+        add_info_(prefix, internal.make_info());
+    }
+
+    inline void registry::add_(const std::string& prefix, const data_& internal) {
+        add_info_(prefix, internal.make_info());
+    }
+
+    template < typename Enum >
+    inline void registry::add_(const std::string& prefix, const enum_<Enum>& internal) {
+        add_info_(prefix, internal.make_info());
+    }
+
+    template < typename Function >
+    inline void registry::add_(const std::string& prefix, const function_<Function>& internal) {
+        add_info_(prefix, internal.make_info());
+    }
+
+    template < typename Member >
+    inline void registry::add_(const std::string& prefix, const member_<Member>& internal) {
+        add_info_(prefix, internal.make_info());
+    }
+
+    template < typename Method >
+    inline void registry::add_(const std::string& prefix, const method_<Method>& internal) {
+        add_info_(prefix, internal.make_info());
+    }
+
+    inline void registry::add_(const std::string& prefix, const namespace_& internal) {
+        add_info_(prefix, internal.make_info());
+    }
+}
+
+namespace meta_hpp
+{
+    inline void registry::add_info_(const std::string& prefix, const class_info& info) {
+        (void)prefix;
+        (void)info;
+    }
+
+    inline void registry::add_info_(const std::string& prefix, const ctor_info& info) {
+        (void)prefix;
+        (void)info;
+    }
+
+    inline void registry::add_info_(const std::string& prefix, const data_info& info) {
+        (void)prefix;
+        (void)info;
+    }
+
+    inline void registry::add_info_(const std::string& prefix, const enum_info& info) {
+        (void)prefix;
+        (void)info;
+    }
+
+    inline void registry::add_info_(const std::string& prefix, const evalue_info& info) {
+        (void)prefix;
+        (void)info;
+    }
+
+    inline void registry::add_info_(const std::string& prefix, const function_info& info) {
+        (void)prefix;
+        (void)info;
+    }
+
+    inline void registry::add_info_(const std::string& prefix, const member_info& info) {
+        (void)prefix;
+        (void)info;
+    }
+
+    inline void registry::add_info_(const std::string& prefix, const method_info& info) {
+        (void)prefix;
+        (void)info;
+    }
+
+    inline void registry::add_info_(const std::string& prefix, const namespace_info& info) {
+        (void)prefix;
+        (void)info;
+    }
+}
diff --git a/headers/meta.hpp/meta_registry/class_.hpp b/headers/meta.hpp/meta_registry/class_.hpp
index 525931e..c6de986 100644
--- a/headers/meta.hpp/meta_registry/class_.hpp
+++ b/headers/meta.hpp/meta_registry/class_.hpp
@@ -6,9 +6,32 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
+#include "../meta_infos/class_info.hpp"
+
 namespace meta_hpp
 {
     template < typename Class >
     class class_ final {
+    public:
+        explicit class_(std::string name);
+
+        class_info make_info() const;
+    private:
+        std::string name_;
     };
 }
+
+namespace meta_hpp
+{
+    template < typename Class >
+    inline class_<Class>::class_(std::string name)
+    : name_{std::move(name)} {}
+
+    template < typename Class >
+    inline class_info class_<Class>::make_info() const {
+        return class_info{};
+    }
+}
diff --git a/headers/meta.hpp/meta_registry/ctor_.hpp b/headers/meta.hpp/meta_registry/ctor_.hpp
index fd15a22..03d628d 100644
--- a/headers/meta.hpp/meta_registry/ctor_.hpp
+++ b/headers/meta.hpp/meta_registry/ctor_.hpp
@@ -6,9 +6,29 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
+#include "../meta_infos/ctor_info.hpp"
+
 namespace meta_hpp
 {
     template < typename... Args >
     class ctor_ final {
+    public:
+        explicit ctor_() = default;
+
+        template < typename Class >
+        ctor_info make_info() const;
+    private:
     };
 }
+
+namespace meta_hpp
+{
+    template < typename... Args >
+    template < typename Class >
+    inline ctor_info ctor_<Args...>::make_info() const {
+        return ctor_info{};
+    }
+}
diff --git a/headers/meta.hpp/meta_registry/data_.hpp b/headers/meta.hpp/meta_registry/data_.hpp
index 0c6d281..ccbf5a0 100644
--- a/headers/meta.hpp/meta_registry/data_.hpp
+++ b/headers/meta.hpp/meta_registry/data_.hpp
@@ -6,8 +6,31 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
+#include "../meta_infos/data_info.hpp"
+
 namespace meta_hpp
 {
     class data_ final {
+    public:
+        explicit data_(std::string name, class value value);
+
+        data_info make_info() const;
+    private:
+        std::string name_;
+        class value value_;
     };
 }
+
+namespace meta_hpp
+{
+    inline data_::data_(std::string name, class value value)
+    : name_{std::move(name)}
+    , value_{std::move(value)} {}
+
+    inline data_info data_::make_info() const {
+        return data_info{};
+    }
+}
diff --git a/headers/meta.hpp/meta_registry/enum_.hpp b/headers/meta.hpp/meta_registry/enum_.hpp
index d046015..3910210 100644
--- a/headers/meta.hpp/meta_registry/enum_.hpp
+++ b/headers/meta.hpp/meta_registry/enum_.hpp
@@ -6,9 +6,32 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
+#include "../meta_infos/enum_info.hpp"
+
 namespace meta_hpp
 {
     template < typename Enum >
     class enum_ final {
+    public:
+        explicit enum_(std::string name);
+
+        enum_info make_info() const;
+    private:
+        std::string name_;
     };
 }
+
+namespace meta_hpp
+{
+    template < typename Enum >
+    inline enum_<Enum>::enum_(std::string name)
+    : name_{std::move(name)} {}
+
+    template < typename Enum >
+    inline enum_info enum_<Enum>::make_info() const {
+        return enum_info{};
+    }
+}
diff --git a/headers/meta.hpp/meta_registry/evalue_.hpp b/headers/meta.hpp/meta_registry/evalue_.hpp
index 397fe7a..a338fee 100644
--- a/headers/meta.hpp/meta_registry/evalue_.hpp
+++ b/headers/meta.hpp/meta_registry/evalue_.hpp
@@ -6,9 +6,34 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
+#include "../meta_infos/evalue_info.hpp"
+
 namespace meta_hpp
 {
     template < typename Enum >
     class evalue_ final {
+    public:
+        explicit evalue_(std::string name, Enum value);
+
+        evalue_info make_info() const;
+    private:
+        std::string name_;
+        Enum value_;
     };
 }
+
+namespace meta_hpp
+{
+    template < typename Enum >
+    inline evalue_<Enum>::evalue_(std::string name, Enum value)
+    : name_{std::move(name)}
+    , value_{std::move(value)} {}
+
+    template < typename Enum >
+    inline evalue_info evalue_<Enum>::make_info() const {
+        return evalue_info{};
+    }
+}
diff --git a/headers/meta.hpp/meta_registry/function_.hpp b/headers/meta.hpp/meta_registry/function_.hpp
index 12a04ab..72273d2 100644
--- a/headers/meta.hpp/meta_registry/function_.hpp
+++ b/headers/meta.hpp/meta_registry/function_.hpp
@@ -6,9 +6,34 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
+#include "../meta_infos/function_info.hpp"
+
 namespace meta_hpp
 {
     template < typename Function >
     class function_ final {
+    public:
+        explicit function_(std::string name, Function instance);
+
+        function_info make_info() const;
+    private:
+        std::string name_;
+        Function instance_;
     };
 }
+
+namespace meta_hpp
+{
+    template < typename Function >
+    inline function_<Function>::function_(std::string name, Function instance)
+    : name_{std::move(name)}
+    , instance_{std::move(instance)} {}
+
+    template < typename Function >
+    inline function_info function_<Function>::make_info() const {
+        return function_info{};
+    }
+}
diff --git a/headers/meta.hpp/meta_registry/member_.hpp b/headers/meta.hpp/meta_registry/member_.hpp
index a93eb31..0630d49 100644
--- a/headers/meta.hpp/meta_registry/member_.hpp
+++ b/headers/meta.hpp/meta_registry/member_.hpp
@@ -6,9 +6,34 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
+#include "../meta_infos/member_info.hpp"
+
 namespace meta_hpp
 {
     template < typename Member >
     class member_ final {
+    public:
+        explicit member_(std::string name, Member instance);
+
+        member_info make_info() const;
+    private:
+        std::string name_;
+        Member instance_;
     };
 }
+
+namespace meta_hpp
+{
+    template < typename Member >
+    inline member_<Member>::member_(std::string name, Member instance)
+    : name_{std::move(name)}
+    , instance_{std::move(instance)} {}
+
+    template < typename Member >
+    inline member_info member_<Member>::make_info() const {
+        return member_info{};
+    }
+}
diff --git a/headers/meta.hpp/meta_registry/method_.hpp b/headers/meta.hpp/meta_registry/method_.hpp
index 2cb0530..7aa9aa1 100644
--- a/headers/meta.hpp/meta_registry/method_.hpp
+++ b/headers/meta.hpp/meta_registry/method_.hpp
@@ -6,9 +6,34 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
+#include "../meta_infos/method_info.hpp"
+
 namespace meta_hpp
 {
     template < typename Method >
     class method_ final {
+    public:
+        explicit method_(std::string name, Method instance);
+
+        method_info make_info() const;
+    private:
+        std::string name_;
+        Method instance_;
     };
 }
+
+namespace meta_hpp
+{
+    template < typename Method >
+    inline method_<Method>::method_(std::string name, Method instance)
+    : name_{std::move(name)}
+    , instance_{std::move(instance)} {}
+
+    template < typename Method >
+    inline method_info method_<Method>::make_info() const {
+        return method_info{};
+    }
+}
diff --git a/headers/meta.hpp/meta_registry/namespace_.hpp b/headers/meta.hpp/meta_registry/namespace_.hpp
index cd21b26..bc4f16e 100644
--- a/headers/meta.hpp/meta_registry/namespace_.hpp
+++ b/headers/meta.hpp/meta_registry/namespace_.hpp
@@ -6,8 +6,29 @@
 
 #pragma once
 
+#include "../meta_fwd.hpp"
+#include "../meta_utilities.hpp"
+
+#include "../meta_infos/namespace_info.hpp"
+
 namespace meta_hpp
 {
     class namespace_ final {
+    public:
+        explicit namespace_(std::string name);
+
+        namespace_info make_info() const;
+    private:
+        std::string name_;
     };
 }
+
+namespace meta_hpp
+{
+    inline namespace_::namespace_(std::string name)
+    : name_{std::move(name)} {}
+
+    inline namespace_info namespace_::make_info() const {
+        return namespace_info{};
+    }
+}
diff --git a/headers/meta.hpp/meta_utilities.hpp b/headers/meta.hpp/meta_utilities.hpp
new file mode 100644
index 0000000..8658506
--- /dev/null
+++ b/headers/meta.hpp/meta_utilities.hpp
@@ -0,0 +1,11 @@
+/*******************************************************************************
+ * This file is part of the "https://github.com/blackmatov/meta.hpp"
+ * For conditions of distribution and use, see copyright notice in LICENSE.md
+ * Copyright (C) 2021, by Matvey Cherevko (blackmatov@gmail.com)
+ ******************************************************************************/
+
+#pragma once
+
+#include "meta_fwd.hpp"
+
+#include "meta_utilities/value.hpp"
diff --git a/headers/meta.hpp/meta_utilities/value.hpp b/headers/meta.hpp/meta_utilities/value.hpp
new file mode 100644
index 0000000..461fa3f
--- /dev/null
+++ b/headers/meta.hpp/meta_utilities/value.hpp
@@ -0,0 +1,23 @@
+/*******************************************************************************
+ * This file is part of the "https://github.com/blackmatov/meta.hpp"
+ * For conditions of distribution and use, see copyright notice in LICENSE.md
+ * Copyright (C) 2021, by Matvey Cherevko (blackmatov@gmail.com)
+ ******************************************************************************/
+
+#pragma once
+
+#include "../meta_fwd.hpp"
+
+namespace meta_hpp
+{
+    class value final {
+    public:
+        value() = delete;
+
+        value(value&&) = default;
+        value& operator=(value&&) = default;
+
+        value(const value&) = default;
+        value& operator=(const value&) = default;
+    };
+}