diff --git a/src/Weew/Http/IUnHttpRequestable.php b/src/Weew/Http/IUnHttpRequestable.php
new file mode 100644
index 0000000..fdf7b60
--- /dev/null
+++ b/src/Weew/Http/IUnHttpRequestable.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace Weew\Http;
+
+interface IUnHttpRequestable {
+    /**
+     * @param IHttpRequest $request
+     *
+     * @return mixed
+     */
+    static function fromHttpRequest(IHttpRequest $request);
+}
diff --git a/src/Weew/Http/IUnHttpResponseable.php b/src/Weew/Http/IUnHttpResponseable.php
new file mode 100644
index 0000000..a970604
--- /dev/null
+++ b/src/Weew/Http/IUnHttpResponseable.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace Weew\Http;
+
+interface IUnHttpResponseable {
+    /**
+     * @param IHttpResponse $response
+     *
+     * @return mixed
+     */
+    static function fromHttpResponse(IHttpResponse $response);
+}