diff --git a/src/management.ml b/src/management.ml
index 7e21f511..30562e7d 100644
--- a/src/management.ml
+++ b/src/management.ml
@@ -110,9 +110,29 @@ let keys_get req server _env =
   let* () = add ~field:"content-type" "application/json" in
   respond `OK
 
+type foo = { v: string }
+
+let foo_jsont =
+  let open Jsont in
+  let enc foo = foo.v in
+  let make v = { v } in
+  Object.map ~kind:"foo" make |> Object.mem "v" string ~enc |> Object.finish
+
 let keys_post req _server _env =
   let open Vif.Response in
   let open Syntax in
-  let* () = with_string req {||} in
-  let* () = add ~field:"content-type" "application/json" in
-  respond `OK
+  match Vif.Request.of_json req with
+  | Ok (foo : foo) ->
+      let str = Fmt.str "key: %s@." foo.v in
+      let* () =
+        Vif.Response.add ~field:"content-type" "text/plain; charset=utf-8"
+      in
+      let* () = Vif.Response.with_string req str in
+      Vif.Response.respond `OK
+  | Error (`Msg msg) ->
+      Logs.err (fun m -> m "Invalid JSON: %s" msg);
+      let* () =
+        Vif.Response.add ~field:"content-type" "text/plain; charset=utf-8"
+      in
+      let* () = Vif.Response.with_string req msg in
+      Vif.Response.respond (`Code 422)
diff --git a/src/mte.ml b/src/mte.ml
index 8439cdb0..c2bc7ef8 100644
--- a/src/mte.ml
+++ b/src/mte.ml
@@ -24,16 +24,16 @@ let routes =
   let open Vif.Uri in
   let open Vif.Route in
   let open Vif.Type in
-  (* just for alignement *)
-  let get_ = get in
-  let post = Fun.flip post in
   [
-    get_ (rel /?? nil) --> hello;
-    get_ (rel / "terms" /?? nil) --> Static.terms;
-    get_ (rel / "privacy" /?? nil) --> Static.privacy;
-    get_ (rel / "test" /?? nil) --> Database.test_activate;
-    get_ (rel / "management" / "keys" /?? nil) --> Management.keys_get;
-    post (rel / "management" / "keys" /?? nil) any --> Management.keys_post;
+    get (rel /?? nil) --> hello;
+    get (rel / "terms" /?? nil) --> Static.terms;
+    get (rel / "privacy" /?? nil) --> Static.privacy;
+    get (rel / "test" /?? nil) --> Database.test_activate;
+    get (rel / "management" / "keys" /?? nil) --> Management.keys_get;
+    post
+      (json_encoding Management.foo_jsont)
+      (rel / "management" / "keys" /?? nil)
+    --> Management.keys_post;
   ]
 
 let () =