diff --git a/src/apps/persistence/users.clj b/src/apps/persistence/users.clj
index 8d8251a4..a572f973 100644
--- a/src/apps/persistence/users.clj
+++ b/src/apps/persistence/users.clj
@@ -2,7 +2,8 @@
   (:use [clojure-commons.core :only [remove-nil-values]]
         [kameleon.uuids :only [uuidify]]
         [korma.core :exclude [update]])
-  (:require [korma.core :as sql])
+  (:require [korma.core :as sql]
+            [apps.util.conversions :refer [long->timestamp]])
   (:import [java.sql Timestamp]))
 
 (defn- user-base-query
@@ -45,25 +46,17 @@
 
 (defn- insert-login-record
   "Records when a user logs into the DE."
-  [user-id ip-address user-agent]
+  [user-id ip-address session-id login-time]
   (insert :logins
           (values (remove-nil-values
                    {:user_id    user-id
                     :ip_address ip-address
-                    :user_agent user-agent}))))
+                    :session_id session-id
+                    :login_time (long->timestamp login-time)}))))
 
 (defn record-login
   "Records when a user logs into the DE. Returns the recorded login time."
-  [username ip-address user-agent]
-  (-> (insert-login-record (get-user-id username) ip-address user-agent)
+  [username ip-address session-id login-time]
+  (-> (insert-login-record (get-user-id username) ip-address session-id login-time)
       (:login_time)
       (.getTime)))
-
-(defn record-logout
-  "Records when a user logs out of the DE."
-  [username ip-address login-time]
-  (sql/update :logins
-              (set-fields {:logout_time (sqlfn :now)})
-              (where {:user_id                                       (get-user-id username)
-                      :ip_address                                    ip-address})
-              (where {(sqlfn :date_trunc "milliseconds" :login_time) (Timestamp. login-time)})))
diff --git a/src/apps/routes/schemas/user.clj b/src/apps/routes/schemas/user.clj
index 1b076116..059843a7 100644
--- a/src/apps/routes/schemas/user.clj
+++ b/src/apps/routes/schemas/user.clj
@@ -1,7 +1,7 @@
 (ns apps.routes.schemas.user
   (:use [common-swagger-api.schema :only [describe]]
         [apps.routes.params :only [SecuredQueryParams]]
-        [schema.core :only [defschema]])
+        [schema.core :only [defschema optional-key]])
   (:require [common-swagger-api.schema.sessions :as sessions-schema])
   (:import [java.util UUID]))
 
@@ -18,8 +18,5 @@
 (defschema LoginParams
   (merge SecuredQueryParams
          sessions-schema/IPAddrParam
-         {:user-agent (describe String "The user agent obtained from the original request.")}))
-
-(defschema LogoutParams
-  (merge SecuredQueryParams
-         sessions-schema/LogoutParams))
+         {(optional-key :session-id) (describe String "The session ID provided by the auth provider.")
+          (optional-key :login-time) (describe Long "Login time as milliseconds since the epoch, provided by auth provider.")}))
diff --git a/src/apps/routes/users.clj b/src/apps/routes/users.clj
index 2e71a33f..b6f2a771 100644
--- a/src/apps/routes/users.clj
+++ b/src/apps/routes/users.clj
@@ -29,10 +29,4 @@
     :summary "User Login Service"
     :description "Terrain calls this service to record when a user logs in
           and to fetch user session info."
-    (ok (users/login current-user params)))
-
-  (POST "/logout" []
-    :query [params LogoutParams]
-    :summary sessions-schema/LogoutSummary
-    :description sessions-schema/LogoutDocs
-    (ok (users/logout current-user params))))
+    (ok (users/login current-user params))))
diff --git a/src/apps/service/users.clj b/src/apps/service/users.clj
index dd696434..891042e7 100644
--- a/src/apps/service/users.clj
+++ b/src/apps/service/users.clj
@@ -12,11 +12,6 @@
   (remove-nil-vals (up/for-username username)))
 
 (defn login
-  [{:keys [username] :as current-user} {:keys [ip-address user-agent]}]
-  {:login_time (up/record-login username ip-address user-agent)
+  [{:keys [username] :as current-user} {:keys [ip-address login-time session-id]}]
+  {:login_time (up/record-login username ip-address session-id login-time)
    :auth_redirect (oauth/get-redirect-uris current-user)})
-
-(defn logout
-  [{:keys [username]} {:keys [ip-address login-time]}]
-  (up/record-logout username ip-address login-time)
-  nil)