diff --git a/.clang-format b/.clang-format
index 7a5d829..77be22e 100644
--- a/.clang-format
+++ b/.clang-format
@@ -3,4 +3,4 @@ BasedOnStyle:               Google
 ColumnLimit:                119
 IndentWidth:                4
 DerivePointerAlignment:     false
-NamespaceIndentation:       Inner
+NamespaceIndentation:       All
diff --git a/libeiffel b/libeiffel
index fefa49b..c7ad1cb 160000
--- a/libeiffel
+++ b/libeiffel
@@ -1 +1 @@
-Subproject commit fefa49b63cc8a88175097ef999426101897fe892
+Subproject commit c7ad1cb13c54bdb7e279675042afbfede44a024a
diff --git a/source/core/plugin_handler.cpp b/source/core/plugin_handler.cpp
new file mode 100644
index 0000000..451591b
--- /dev/null
+++ b/source/core/plugin_handler.cpp
@@ -0,0 +1,33 @@
+#include "plugin_handler.hpp"
+
+#include <eiffel/user.h>
+
+namespace efl::core {
+
+    PluginHandler::PluginHandler() {}
+
+    PluginHandler::~PluginHandler() {}
+
+    ams::Result PluginHandler::GetPluginMeta(SlPluginMeta* out_pluginMeta, PluginName& name) {
+        auto& activePluginMetas = GetInstance().m_ActivePluginMetas;
+        auto foundPluginEntry = activePluginMetas.find(name.data());
+        if (foundPluginEntry != activePluginMetas.end()) {
+            *out_pluginMeta = foundPluginEntry->second;
+        } else {
+            return EFL_U_RESULT_PLUGIN_NOT_ACTIVE;
+        }
+        return 0;
+    }
+
+    ams::Result PluginHandler::GetPluginSharedMemInfo(SlPluginSharedMemInfo* out_sharedMemInfo, PluginName& name) {
+        auto& activePluginSharedMemInfos = GetInstance().m_ActivePluginSharedMemInfos;
+        auto foundPluginEntry = activePluginSharedMemInfos.find(name.data());
+        if (foundPluginEntry == activePluginSharedMemInfos.end()) {
+            return EFL_U_RESULT_SHARED_MEM_NOT_REGISTERED;
+        }
+        *out_sharedMemInfo = foundPluginEntry->second;
+        activePluginSharedMemInfos.erase(foundPluginEntry);  // temp: keep it after proper cleanup impl
+        return 0;
+    }
+
+}  // namespace efl::core
diff --git a/source/core/plugin_handler.hpp b/source/core/plugin_handler.hpp
new file mode 100644
index 0000000..067c8e0
--- /dev/null
+++ b/source/core/plugin_handler.hpp
@@ -0,0 +1,41 @@
+#pragma once
+
+#include <eiffel/sl.h>
+
+#include <map>
+#include <stratosphere.hpp>
+#include <string>
+
+namespace efl::core {
+
+    using PluginName = std::array<char, sizeof(SlPluginName)>;
+
+    class PluginHandler {
+       private:
+        PluginHandler();
+        PluginHandler(const PluginHandler&) = delete;
+        ~PluginHandler();
+        static inline auto& GetInstance() {
+            static PluginHandler s_Instance;
+            return s_Instance;
+        }
+
+        std::map<std::string, SlPluginMeta> m_ActivePluginMetas;
+        std::map<std::string, SlPluginSharedMemInfo> m_ActivePluginSharedMemInfos;
+
+        // TODO: need to clean everything when game is closed
+
+       public:
+        static inline void SetPluginMeta(SlPluginMeta& pluginMeta) {
+            GetInstance().m_ActivePluginMetas[pluginMeta.name] = pluginMeta;
+        }
+
+        static inline void SetPluginSharedMem(SlPluginName name, SlPluginSharedMemInfo& sharedMemInfo) {
+            GetInstance().m_ActivePluginSharedMemInfos[name] = sharedMemInfo;
+        }
+
+        static ams::Result GetPluginMeta(SlPluginMeta* out_pluginMeta, PluginName& name);
+        static ams::Result GetPluginSharedMemInfo(SlPluginSharedMemInfo* out_sharedMemInfo, PluginName& name);
+    };
+
+}  // namespace efl::core
diff --git a/source/ipc/server.cpp b/source/ipc/server.cpp
index 2ed28b2..61e0bc9 100644
--- a/source/ipc/server.cpp
+++ b/source/ipc/server.cpp
@@ -1,14 +1,15 @@
 #include "server.hpp"
 
 #include "sl_service.hpp"
+#include "user_service.hpp"
 
-namespace efl {
-namespace ipc {
+namespace efl::ipc {
 
     Server::Server() {
         R_ABORT_UNLESS(
             m_serverManager.RegisterServer<SlService>(SlService::SERVICE_NAME, EIFFEL_SERVICE_MAX_SESSIONS));
+        R_ABORT_UNLESS(
+            m_serverManager.RegisterServer<UserService>(UserService::SERVICE_NAME, EIFFEL_SERVICE_MAX_SESSIONS));
     }
 
-};  // namespace ipc
-};  // namespace efl
+};  // namespace efl::ipc
diff --git a/source/ipc/server.hpp b/source/ipc/server.hpp
index 2610afd..9897a24 100644
--- a/source/ipc/server.hpp
+++ b/source/ipc/server.hpp
@@ -2,12 +2,11 @@
 
 #include <stratosphere.hpp>
 
-namespace efl {
-namespace ipc {
+namespace efl::ipc {
 
     class Server {
        private:
-        static constexpr auto NUM_SERVERS = 1;
+        static constexpr auto NUM_SERVERS = 2;
         static constexpr auto EIFFEL_SERVICE_MAX_SESSIONS = 5;
 
         Server();
@@ -23,5 +22,4 @@ namespace ipc {
         static inline void Loop() { GetInstance().m_serverManager.LoopProcess(); }
     };
 
-}  // namespace ipc
-}  // namespace efl
+}  // namespace efl::ipc
diff --git a/source/ipc/sl_service.cpp b/source/ipc/sl_service.cpp
index 0003c63..3f558b9 100644
--- a/source/ipc/sl_service.cpp
+++ b/source/ipc/sl_service.cpp
@@ -2,8 +2,7 @@
 
 #include "../util.hpp"
 
-namespace efl {
-namespace ipc {
+namespace efl::ipc {
 
     SlService::SlService() {}
 
@@ -11,9 +10,23 @@ namespace ipc {
 
     ams::Result SlService::Log(const ams::sf::InBuffer& module_name, efl::logger::LogLevel level,
                                const ams::sf::InBuffer& buf) {
-        LOG("[%s][%s] %s", module_name.GetPointer(), logger::GetLogLevelString(level), buf.GetPointer());
+        // TODO: impl proper handling of logs
+        printf("LOG: [%s][%s] %s", module_name.GetPointer(), logger::GetLogLevelString(level),
+               buf.GetPointer());  // this is just for debug
         return 0;
     };
 
-};  // namespace ipc
-};  // namespace efl
+    ams::Result SlService::RegisterPlugin(SlPluginMeta meta) {
+        core::PluginHandler::SetPluginMeta(meta);
+        LOG("%s", meta.name);
+        return 0;
+    };
+
+    ams::Result SlService::RegisterSharedMem(EiffelSlRegisterSharedMemIn in, ams::sf::CopyHandle handle) {
+        auto sharedMemInfo = SlPluginSharedMemInfo{handle.GetValue(), in.size, in.perm};
+        core::PluginHandler::SetPluginSharedMem(in.name, sharedMemInfo);
+        LOG("%s - size 0x%lx  perm: %x", in.name, in.size, in.perm);
+        return 0;
+    };
+
+};  // namespace efl::ipc
diff --git a/source/ipc/sl_service.hpp b/source/ipc/sl_service.hpp
index 9fa38d3..b61627f 100644
--- a/source/ipc/sl_service.hpp
+++ b/source/ipc/sl_service.hpp
@@ -4,15 +4,17 @@
 
 #include <stratosphere.hpp>
 
+#include "../core/plugin_handler.hpp"
 #include "../logger/types.hpp"
 
-namespace efl {
-namespace ipc {
+namespace efl::ipc {
 
     class SlService final : public ams::sf::IServiceObject {
        protected:
         enum class CommandId {
             Log = EFL_SL_CMD_LOG,
+            RegisterPlugin = EFL_SL_CMD_REGISTER_PLUGIN,
+            RegisterSharedMem = EFL_SL_CMD_REGISTER_SHARED_MEM,
         };
 
        public:
@@ -20,15 +22,19 @@ namespace ipc {
         virtual ~SlService();
 
        private:
-        ams::Result Log(const ams::sf::InBuffer&, efl::logger::LogLevel, const ams::sf::InBuffer&);
+        ams::Result Log(const ams::sf::InBuffer& module_name, efl::logger::LogLevel level,
+                        const ams::sf::InBuffer& buf);
+        ams::Result RegisterPlugin(SlPluginMeta meta);
+        ams::Result RegisterSharedMem(EiffelSlRegisterSharedMemIn in, ams::sf::CopyHandle handle);
 
        public:
         DEFINE_SERVICE_DISPATCH_TABLE{
             MAKE_SERVICE_COMMAND_META(Log),
+            MAKE_SERVICE_COMMAND_META(RegisterPlugin),
+            MAKE_SERVICE_COMMAND_META(RegisterSharedMem),
         };
 
         static constexpr auto SERVICE_NAME = ams::sm::ServiceName::Encode(EIFFEL_SKYLINE_SERVICE_NAME);
     };
 
-};  // namespace ipc
-};  // namespace efl
+};  // namespace efl::ipc
diff --git a/source/ipc/user_service.cpp b/source/ipc/user_service.cpp
new file mode 100644
index 0000000..d75ea37
--- /dev/null
+++ b/source/ipc/user_service.cpp
@@ -0,0 +1,28 @@
+#include "user_service.hpp"
+
+#include "../util.hpp"
+
+namespace efl::ipc {
+
+    UserService::UserService() {}
+
+    UserService::~UserService() {}
+
+    ams::Result UserService::GetPluginMeta(ams::sf::Out<SlPluginMeta> out, core::PluginName name) {
+        LOG("%s", name.data());
+        return core::PluginHandler::GetPluginMeta(out.GetPointer(), name);
+    };
+
+    // TODO: use copy handle instead when cleaning up handles is implemented
+    ams::Result UserService::GetPluginSharedMem(ams::sf::OutMoveHandle out_handle,
+                                                ams::sf::Out<SlPluginSharedMemInfo> out, core::PluginName name) {
+        LOG("%s", name.data());
+        auto rc = core::PluginHandler::GetPluginSharedMemInfo(out.GetPointer(), name);
+        if (R_SUCCEEDED(rc)) {
+            *(out_handle.GetHandlePointer()) = out.GetPointer()->handle;
+        }
+        out.GetPointer()->handle = INVALID_HANDLE;  // for libeiffel to fill in
+        return rc;
+    };
+
+};  // namespace efl::ipc
diff --git a/source/ipc/user_service.hpp b/source/ipc/user_service.hpp
new file mode 100644
index 0000000..73ad06a
--- /dev/null
+++ b/source/ipc/user_service.hpp
@@ -0,0 +1,36 @@
+#pragma once
+
+#include <eiffel/user.h>
+
+#include <stratosphere.hpp>
+
+#include "../core/plugin_handler.hpp"
+
+namespace efl::ipc {
+
+    class UserService final : public ams::sf::IServiceObject {
+       protected:
+        enum class CommandId {
+            GetPluginMeta = EFL_U_CMD_GET_PLUGIN_META,
+            GetPluginSharedMem = EFL_U_CMD_GET_PLUGIN_SHARED_MEM,
+        };
+
+       public:
+        explicit UserService();
+        virtual ~UserService();
+
+       private:
+        ams::Result GetPluginMeta(ams::sf::Out<SlPluginMeta> out, core::PluginName name);
+        ams::Result GetPluginSharedMem(ams::sf::OutMoveHandle out_handle, ams::sf::Out<SlPluginSharedMemInfo> out,
+                                       core::PluginName name);
+
+       public:
+        DEFINE_SERVICE_DISPATCH_TABLE{
+            MAKE_SERVICE_COMMAND_META(GetPluginMeta),
+            MAKE_SERVICE_COMMAND_META(GetPluginSharedMem),
+        };
+
+        static constexpr auto SERVICE_NAME = ams::sm::ServiceName::Encode(EIFFEL_USER_SERVICE_NAME);
+    };
+
+};  // namespace efl::ipc