diff --git a/api/api.proto b/api/api.proto
index 45544d293a1..56245fb5ec6 100644
--- a/api/api.proto
+++ b/api/api.proto
@@ -152,6 +152,16 @@ service Wallet {
     };
   }
 
+  rpc UpdateAsset (UpdateAssetContract) returns (Transaction) {
+    option (google.api.http) = {
+      post: "/wallet/updateasset"
+      body: "*"
+      additional_bindings {
+        get: "/wallet/updateasset"
+      }
+    };
+  }
+
   rpc ListNodes (EmptyMessage) returns (NodeList) {
     option (google.api.http) = {
       post: "/wallet/listnodes"
@@ -171,6 +181,15 @@ service Wallet {
       }
     };
   }
+  rpc GetAccountNet (Account) returns (AccountNetMessage) {
+      option (google.api.http) = {
+        post: "/wallet/getaccountnet"
+        body: "*"
+        additional_bindings {
+          get: "/wallet/getaccountnet"
+        }
+      };
+    };
   rpc GetAssetIssueByName (BytesMessage) returns (AssetIssueContract) {
     option (google.api.http) = {
       post: "/wallet/getassetissuebyname"
@@ -529,4 +548,12 @@ message TimePaginatedMessage {
   TimeMessage timeMessage = 1;
   int64 offset = 2;
   int64 limit = 3;
-}
\ No newline at end of file
+}
+message AccountNetMessage {
+  int64 freeNetUsed = 1;
+  int64 freeNetLimit = 2;
+  int64 NetUsed = 3;
+  int64 NetLimit = 4;
+  map<string, int64> assetNetUsed = 5;
+  map<string, int64> assetNetLimit = 6;
+}
diff --git a/core/Contract.proto b/core/Contract.proto
index 98c4455eceb..d9da2664dfd 100644
--- a/core/Contract.proto
+++ b/core/Contract.proto
@@ -93,6 +93,10 @@ message AssetIssueContract {
   int32 vote_score = 16;
   bytes description = 20;
   bytes url = 21;
+  int64 free_asset_net_limit = 22;
+  int64 public_free_asset_net_limit = 23;
+  int64 public_free_asset_net_usage = 24;
+  int64 public_latest_free_net_time = 25;
 }
 
 message ParticipateAssetIssueContract {
@@ -123,4 +127,12 @@ message UnfreezeAssetContract {
 
 message WithdrawBalanceContract {
   bytes owner_address = 1;
+}
+
+message UpdateAssetContract {
+  bytes owner_address = 1;
+  bytes description = 2;
+  bytes url = 3;
+  int64 new_limit = 4;
+  int64 new_public_limit = 5;
 }
\ No newline at end of file
diff --git a/core/Tron.proto b/core/Tron.proto
index 5a06b62c507..9d92e294f07 100644
--- a/core/Tron.proto
+++ b/core/Tron.proto
@@ -42,7 +42,7 @@ message Account {
 
   bytes account_name = 1;
   AccountType type = 2;
-  // the create adress
+  // the create address
   bytes address = 3;
   // the trx balance
   int64 balance = 4;
@@ -51,16 +51,14 @@ message Account {
   // the other asset owned by this account
   map<string, int64> asset = 6;
   // latest asset operation time
-  map<string, int64> latest_asset_operation_time = 18;
   // the frozen balance
   repeated Frozen frozen = 7;
   // bandwidth, get from frozen
-  int64 bandwidth = 8;
+  int64 net_usage = 8;
   // this account create time
   int64 create_time = 9;
-  // this last opration time, including transfer, voting and so on.
+  // this last operation time, including transfer, voting and so on. //FIXME fix grammar
   int64 latest_opration_time = 10;
-
   // witness block producing allowance
   int64 allowance = 11;
   // last withdraw time
@@ -73,14 +71,20 @@ message Account {
   repeated Frozen frozen_supply = 16;
   // asset_issued_name
   bytes asset_issued_name = 17;
+  map<string, int64> latest_asset_operation_time = 18;
+  int64 free_net_usage = 19;
+  map<string, int64> free_asset_net_usage = 20;
+  int64 latest_consume_time = 21;
+  int64 latest_consume_free_time = 22;
 }
 
+//FIXME authority?
 message acuthrity {
   AccountId account = 1;
   bytes permission_name = 2;
 }
 
-
+//FIXME permission
 message permision {
   AccountId account = 1;
 }
@@ -98,6 +102,7 @@ message Witness {
   bool isJobs = 9;
 }
 
+
 // Vote Change
 message Votes {
   bytes address = 1;
@@ -145,6 +150,7 @@ message Transaction {
       UnfreezeBalanceContract = 12;
       WithdrawBalanceContract = 13;
       UnfreezeAssetContract = 14;
+      UpdateAssetContract = 15;
       CustomContract = 20;
     }
     ContractType type = 1;
@@ -168,7 +174,7 @@ message Transaction {
     int64 ref_block_num = 3;
     bytes ref_block_hash = 4;
     int64 expiration = 8;
-    repeated acuthrity auths = 9;
+    repeated acuthrity auths = 9; //FIXME authority
     // data not used
     bytes data = 10;
     //only support size = 1,  repeated list here for extenstion
@@ -184,6 +190,10 @@ message Transaction {
   repeated Result ret = 5;
 }
 
+message Transactions {
+  repeated Transaction transactions = 1;
+}
+
 message BlockHeader {
   message raw {
     int64 timestamp = 1;
@@ -289,7 +299,15 @@ message DisconnectMessage {
 }
 
 message HelloMessage {
+  message BlockId {
+    bytes hash = 1;
+    int64 number = 2;
+  }
+
   Endpoint from = 1;
   int32 version = 2;
   int64 timestamp = 3;
+  BlockId genesisBlockId = 4;
+  BlockId solidBlockId = 5;
+  BlockId headBlockId = 6;
 }