diff --git a/src/framework/components/interceptors.clj b/src/framework/components/interceptors.clj
index d3f79ada..603dfe39 100644
--- a/src/framework/components/interceptors.clj
+++ b/src/framework/components/interceptors.clj
@@ -1,6 +1,5 @@
 (ns framework.components.interceptors
   (:require
-    [clojure.core :as core]
     [clojure.walk :refer [keywordize-keys]]
     [framework.acl.core :as acl]
     [framework.components.interceptors.muuntaja :as m-int]
@@ -37,6 +36,8 @@
                                                    :role :guest})))
 
 (defn require-logged-in
+  "Tries to extract userId from headers/authorization, and adds it as user/id into session-data.
+  If fails, it executes 'or-else' parameter function. By default it inserts a new guest user"
   ([]
    (require-logged-in guest))
   ([or-else]
@@ -48,6 +49,9 @@
                (or-else state)))}))
 
 (def session-interceptor
+  ":enter Extracts session-id from headers. Tries to get last session with the same id from session backend
+  :leave Stores actual session in session backend
+  TODO session Time To Leave"
   {:enter (fn [{request :request :as state}]
             (let [sessions-backend (-> state
                                        :deps
@@ -76,6 +80,10 @@
                 #(keywordize-keys ((par/wrap-params identity) %)))))})
 
 (defn db-access
+  "Runs HoneySQL query provided in (:query state)
+  Injects the result to (state [:response-data :db-data])
+  Optional parameter function: executed on :enter, if session interceptors creates new-session key in session data
+  for instance fetching user from db by it's id"
   ([]
    {:leave (fn [{query :query
                  :as   state}]
@@ -92,18 +100,22 @@
                 (xiana/ok state))))))
 
 (def view
+  "Executes view function to create response"
   {:leave (fn [{view :view :as state}]
             (if view
               (view state)
               (xiana/ok state)))})
 
 (defn muuntaja
+  "Muuntaja interceptor wrapped into xiana monad"
   ([]
    (muuntaja m-int/muun-instance))
   ([instance]
    (wrap/interceptor instance)))
 
 (defn acl-restrict
+  ":enter checks access control
+  :leave place for tightening db query via provided owner-fn"
   ([]
    (acl-restrict {}))
   ([m]
@@ -118,6 +130,7 @@
                          state)))}))
 
 (def side-effect
+  "Place for business logic based on db-data, before rendering view"
   {:leave (fn [{f :side-effect :as state}]
             (if f
               (f state)
diff --git a/src/framework/components/interceptors/muuntaja.clj b/src/framework/components/interceptors/muuntaja.clj
index df6d6646..dc8d66f0 100644
--- a/src/framework/components/interceptors/muuntaja.clj
+++ b/src/framework/components/interceptors/muuntaja.clj
@@ -1,4 +1,5 @@
 (ns framework.components.interceptors.muuntaja
+  "Prepare default munntaja instance"
   (:require
     [clojure.data.xml :as xml]
     [clojure.string]
diff --git a/src/framework/components/interceptors/wrap.clj b/src/framework/components/interceptors/wrap.clj
index 4c255d3d..e39a675b 100644
--- a/src/framework/components/interceptors/wrap.clj
+++ b/src/framework/components/interceptors/wrap.clj
@@ -3,6 +3,7 @@
     [xiana.core :as xiana]))
 
 (defn interceptor
+  "Interceptor wrapper to use xiana monad"
   [in]
   (cond-> {}
     (:enter in) (assoc :enter (fn [state] (xiana/ok ((:enter in) state))))
@@ -10,6 +11,7 @@
     (:error in) (assoc :error (fn [state] (xiana/error ((:error in) state))))))
 
 (defn middleware->enter
+  "add middleware as :enter of interceptor"
   ([middleware]
    (middleware->enter {} middleware))
   ([interceptor middleware]
@@ -17,6 +19,7 @@
                                (xiana/ok (assoc state :request ((middleware identity) req)))))))
 
 (defn middleware->leave
+  "add middleware as :leave of interceptor"
   ([middleware]
    (middleware->leave {} middleware))
   ([interceptor middleware]
diff --git a/src/framework/components/runner.clj b/src/framework/components/runner.clj
index 6efc9402..63561f46 100644
--- a/src/framework/components/runner.clj
+++ b/src/framework/components/runner.clj
@@ -8,6 +8,8 @@
       (xiana/ok state)))
 
 (defn run
+  "Executes interceptors around a function. Be aware of raw recursion
+  TODO: refactor it to use reduce instead of recursion"
   ([state action]
    (run state [] action))
   ([state interceptors action]
diff --git a/src/framework/components/session/auth.clj b/src/framework/components/session/auth.clj
deleted file mode 100644
index ce928592..00000000
--- a/src/framework/components/session/auth.clj
+++ /dev/null
@@ -1,9 +0,0 @@
-(ns framework.components.session.auth
-  (:require
-    [xiana.core :as xiana]))
-
-(defn require-logged-in
-  [state]
-  (if (get-in state [:session-data :user])
-    (xiana/ok state)
-    (xiana/error (assoc state :response {:status 401 :body "Unauthorized"}))))
diff --git a/src/framework/components/session/middleware.clj b/src/framework/components/session/middleware.clj
deleted file mode 100644
index 725883be..00000000
--- a/src/framework/components/session/middleware.clj
+++ /dev/null
@@ -1,30 +0,0 @@
-(ns framework.components.session.middleware
-  (:require
-    [framework.components.session.backend :refer [fetch add! delete!]]
-    [xiana.core :as xiana]))
-
-(defn session-middleware
-  [{request :request :as state}]
-  (let [sessions-backend (-> state
-                             :deps
-                             :session
-                             :session-backend)
-        session-id (get-in request [:headers "session-id"])
-        user (fetch sessions-backend session-id)]
-    (xiana/ok (assoc-in state [:session-data :user] user))))
-
-(defn auth-middleware
-  [state]
-  (let [sessions-backend (-> state
-                             :deps
-                             :session
-                             :session-backend)
-        login-data (-> state
-                       :login-data)
-        logout-data (-> state
-                        :logout-data)]
-    (when login-data
-      (add! sessions-backend (:session-id login-data) login-data))
-    (when logout-data
-      (delete! sessions-backend (:session-id logout-data)))
-    (xiana/ok state)))