diff --git a/http/middleware_context.h b/http/middleware_context.h
new file mode 100644
index 0000000..fbe1d80
--- /dev/null
+++ b/http/middleware_context.h
@@ -0,0 +1,68 @@
+#pragma once
+
+#include "http_request.h"
+#include "http_response.h"
+#include "utility.h"
+
+namespace crow
+{
+namespace detail
+{
+template <typename... Middlewares>
+struct PartialContext
+    : public black_magic::PopBack<Middlewares...>::template rebind<
+          PartialContext>,
+      public black_magic::LastElementType<Middlewares...>::type::Context
+{
+    using parent_context = typename black_magic::PopBack<
+        Middlewares...>::template rebind<::crow::detail::PartialContext>;
+    template <size_t N>
+    using partial = typename std::conditional<
+        N == sizeof...(Middlewares) - 1, PartialContext,
+        typename parent_context::template partial<N>>::type;
+
+    template <typename T> typename T::Context& get()
+    {
+        return static_cast<typename T::Context&>(*this);
+    }
+};
+
+template <> struct PartialContext<>
+{
+    template <size_t> using partial = PartialContext;
+};
+
+template <size_t N, typename Context, typename Container, typename CurrentMW,
+          typename... Middlewares>
+bool middlewareCallHelper(Container& middlewares, Request& req, Response& res,
+                          Context& ctx);
+
+template <typename... Middlewares>
+struct Context : private PartialContext<Middlewares...>
+// struct Context : private Middlewares::context... // simple but less type-safe
+{
+    template <size_t N, typename Context, typename Container>
+    friend typename std::enable_if<(N == 0)>::type
+        afterHandlersCallHelper(Container& middlewares, Context& ctx,
+                                Request& req, Response& res);
+    template <size_t N, typename Context, typename Container>
+    friend typename std::enable_if<(N > 0)>::type
+        afterHandlersCallHelper(Container& middlewares, Context& ctx,
+                                Request& req, Response& res);
+
+    template <size_t N, typename Context, typename Container,
+              typename CurrentMW, typename... Middlewares2>
+    friend bool middlewareCallHelper(Container& middlewares, Request& req,
+                                     Response& res, Context& ctx);
+
+    template <typename T> typename T::Context& get()
+    {
+        return static_cast<typename T::Context&>(*this);
+    }
+
+    template <size_t N>
+    using partial =
+        typename PartialContext<Middlewares...>::template partial<N>;
+};
+} // namespace detail
+} // namespace crow