diff --git a/src/Api.elm b/src/Api.elm
index a461948..cab7847 100644
--- a/src/Api.elm
+++ b/src/Api.elm
@@ -22,8 +22,8 @@ type Update
     = ItemRemoved Item
     | ItemAdded Item
     | WealthUpdated Wealth
-    | ClaimAdded ()
-    | ClaimRemoved ()
+    | ClaimAdded Claim
+    | ClaimRemoved Claim
 
 
 type Msg
@@ -90,6 +90,22 @@ type alias Claim =
     }
 
 
+claimDecoder =
+    D.map3 Claim
+        (D.field "id" int)
+        (D.field "player_id" int)
+        (D.field "loot_id" int)
+
+
+fetchClaims : Int -> Cmd Msg
+fetchClaims playerId =
+    Http.get
+        { url = "http://localhost:8088/api/claims"
+        , expect =
+            valueDecoder (D.list claimDecoder)
+                |> Http.expectJson (GotClaims playerId)
+        }
+
 
 -- PLAYERS
 --
@@ -168,22 +184,6 @@ fetchLoot dest =
 -- CLAIMS
 
 
-claimDecoder =
-    D.map3 Claim
-        (D.field "id" int)
-        (D.field "player_id" int)
-        (D.field "loot_id" int)
-
-
-fetchClaims : Int -> Cmd Msg
-fetchClaims playerId =
-    Http.get
-        { url = "http://localhost:8088/api/claims"
-        , expect =
-            valueDecoder (D.list claimDecoder)
-                |> Http.expectJson (GotClaims playerId)
-        }
-
 
 
 -- API Response
@@ -208,8 +208,8 @@ updatesDecoder =
         [ field "ItemRemoved" (itemDecoder |> D.andThen (\i -> succeed <| ItemRemoved i))
         , field "ItemAdded" (itemDecoder |> D.andThen (\i -> succeed <| ItemAdded i))
         , field "Wealth" (wealthDecoder |> D.andThen (\i -> succeed <| WealthUpdated i))
-        , field "ClaimRemoved" (succeed () |> D.andThen (\i -> succeed <| ClaimRemoved i))
-        , field "ClaimAdded" (succeed () |> D.andThen (\i -> succeed <| ClaimAdded i))
+        , field "ClaimRemoved" (claimDecoder |> D.andThen (\i -> succeed <| ClaimRemoved i))
+        , field "ClaimAdded" (claimDecoder |> D.andThen (\i -> succeed <| ClaimAdded i))
         ]
 
 
@@ -247,18 +247,16 @@ buildPayload mode items =
             E.object
                 [ ( "items", items |> E.list (\i -> E.list identity [ E.int i.id, E.null ]) )
                 , ( "global_mod", E.null )
+                , ( "players", E.null )
                 ]
 
+        -- API expects the list of claimed loot ids
         Modes.Grab ->
-            E.object
-                [ ( "items", items |> E.list (\i -> E.int i.id) )
-                , ( "global_mod", E.null )
-                ]
+            items |> E.list (\i -> E.int i.id)
 
         Modes.Add ->
             E.object
                 [ ( "items", items |> E.list (\i -> E.int i.id) )
-                , ( "global_mod", E.null )
                 ]
 
 
diff --git a/src/Main.elm b/src/Main.elm
index 87fb403..5e56639 100644
--- a/src/Main.elm
+++ b/src/Main.elm
@@ -306,6 +306,12 @@ setLoot items model =
     { model | chest = { chest | loot = items } }
 
 
+setClaims : Claims -> Model -> Model
+setClaims claims model =
+    let
+        chest = model.chest
+    in
+        { model | chest = { chest | claims = claims } }
 
 -- DbUpdates always refer to the active player's loot
 
@@ -340,11 +346,12 @@ applyUpdate u model =
                     }
             }
 
-        Api.ClaimAdded _ ->
-            model
+        Api.ClaimAdded claim ->
+            model |> setClaims (claim :: model.chest.claims)
 
-        Api.ClaimRemoved _ ->
+        Api.ClaimRemoved claim ->
             model
+                |> setClaims (List.filter (\c -> c.id /= claim.id) model.chest.claims)