diff --git a/.github/workflows/syncrepo.yml b/.github/workflows/syncrepo.yml
new file mode 100644
index 0000000..27a6d4b
--- /dev/null
+++ b/.github/workflows/syncrepo.yml
@@ -0,0 +1,45 @@
+name: Repo Sync
+
+on:
+  push:
+    branches: [ main ] # or any branch you want to watch
+
+jobs:
+  repo-sync:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      
+      - name: Pushes to another repository
+        run: |
+            SOURCE_DIRECTORY="$(pwd)" # Source directory path
+            DESTINATION_USERNAME="mpcvault" # Destination GitHub username
+            DESTINATION_REPOSITORY="mpcvaultapis" # Destination repository name
+            TARGET_BRANCH="main" # Target branch in the destination repository
+            USER_EMAIL="info@mpcvault.com"
+            USER_NAME="lxjhk"
+
+            git rm -r --cached .
+            git reset --hard
+
+            # Set user information
+            git config --global user.email "$USER_EMAIL"
+            git config --global user.name "$USER_NAME"
+            git config --unset http.https://github.com/.extraheader
+
+            GIT_CMD_REPOSITORY="https://$USER_NAME:${{ secrets.MPCVAULT_EXTERN_SYNC_GITHUB_TOKEN }}@github.com/$DESTINATION_USERNAME/$DESTINATION_REPOSITORY.git"
+            
+            {
+              git clone --single-branch --depth 1 --branch "$TARGET_BRANCH" "$GIT_CMD_REPOSITORY"
+            } || {
+              echo "::error::Could not clone the destination repository. Command:"
+              echo "::error::git clone --single-branch --branch $TARGET_BRANCH $GIT_CMD_REPOSITORY"
+              exit 1
+            }
+
+            git remote remove origin
+            git remote add origin $GIT_CMD_REPOSITORY
+            git push -f origin main
\ No newline at end of file
diff --git a/mpcvault/platform/v1/api.proto b/mpcvault/platform/v1/api.proto
index 73317ec..285bd01 100644
--- a/mpcvault/platform/v1/api.proto
+++ b/mpcvault/platform/v1/api.proto
@@ -17,6 +17,7 @@ syntax = "proto3";
 package mpcvault.platform.v1;
 
 import "google/protobuf/wrappers.proto";
+import "mpcvault/rpc/v1/status.proto";
 
 option go_package = "go.mpcvault.com/genproto/mpcvaultapis/platform/v1;platform";
 option java_multiple_files = true;
@@ -39,6 +40,68 @@ service PlatformAPI {
 
     // GetBatchPaymentDetails returns the details of a batch payment.
     rpc GetBatchPaymentDetails (GetBatchPaymentDetailsRequest) returns (GetBatchPaymentDetailsResponse);
+
+    // CreateWallet creates a wallet.
+    rpc CreateWallet (CreateWalletRequest) returns (CreateWalletResponse);
+
+    // SignSigningRequest sign a signing request.
+    rpc SignSigningRequest (SignSigningRequestRequest) returns (SignSigningRequestResponse);
+}
+
+message CreateWalletRequest {
+    string vault_uuid = 1;
+    string client_signer_public_key = 2;
+    AddressFormat address_format = 3;
+    string ref = 4;
+}
+enum AddressFormat {
+    ADDRESS_FORMAT_UNKNOWN = 0;
+    ADDRESS_FORMAT_EVM = 1;
+    ADDRESS_FORMAT_BITCOIN = 2;
+    ADDRESS_FORMAT_TRON = 3;
+    ADDRESS_FORMAT_APTOS = 4;
+    ADDRESS_FORMAT_SUI = 5;
+    ADDRESS_FORMAT_SOLANA = 6;
+}
+enum KeyType {
+    KEY_TYPE_UNSPECIFIED = 0;
+    KEY_TYPE_ECC_SECP256K1 = 1;
+    KEY_TYPE_ECC_ED25519 = 2;
+}
+message Wallet {
+    string vault_uuid = 1;
+    string client_signer_public_key = 2;
+    KeyType key_type = 3;
+    string key_path = 4;
+    string public_key = 5;
+    AddressFormat address_format = 6;
+    string address = 7;
+    string ref = 8;
+}
+message CreateWalletResponse {
+    Wallet details = 1;
+    mpcvault.rpc.v1.Status error = 2;
+}
+
+message SignSigningRequestRequest {
+    string uuid = 1;
+}
+message SignSigningRequestError {
+    enum ErrorCode {
+        // Enum unspecified.
+        ERROR_CODE_UNSPECIFIED = 0;
+        // Insufficient funds
+        ERROR_CODE_INSUFFICIENT_FUNDS = 1;
+        // Denied
+        ERROR_CODE_ALREADY_DENIED = 2;
+    }
+    ErrorCode error_code = 1;
+    string message = 2;
+}
+message SignSigningRequestResponse {
+    mpcvault.rpc.v1.Status error = 1;
+    // tx_hash is the hash of the transaction, only set if status is STATUS_SUCCEEDED.
+    string tx_hash = 2;
 }
 
 // EVMGas is the gas fee settings for an EVM transaction.
@@ -254,10 +317,13 @@ message CreateSigningRequestRequest {
     }
     // notes is the transaction notes for the signing request.
     google.protobuf.StringValue notes = 1000;
+    google.protobuf.StringValue vault_uuid = 1001;
+    google.protobuf.StringValue client_signer_public_key = 1002;
 }
 
 message CreateSigningRequestResponse {
     SigningRequest signing_request = 1;
+    mpcvault.rpc.v1.Status error = 2;
 }
 
 message RejectSigningRequestRequest {
@@ -265,7 +331,7 @@ message RejectSigningRequestRequest {
 }
 
 message RejectSigningRequestResponse {
-
+    mpcvault.rpc.v1.Status error = 1;
 }
 
 message GetSigningRequestDetailsRequest {
@@ -274,6 +340,7 @@ message GetSigningRequestDetailsRequest {
 
 message GetSigningRequestDetailsResponse {
     SigningRequest signing_request = 1;
+    mpcvault.rpc.v1.Status error = 2;
 }
 
 message SigningRequest {
@@ -309,7 +376,10 @@ message SigningRequest {
         SuiSendCustom sui_send_custom = 18;
         SolanaSendNative solana_send_native = 19;
         SolanaSendSPLToken solana_send_spl_token = 20;
+        CreateWalletRequest create_wallet = 21;
     }
+    google.protobuf.StringValue vault_uuid = 1000;
+    google.protobuf.StringValue client_signer_public_key = 1001;
 }
 
 message BatchPaymentRecipient {
@@ -360,6 +430,7 @@ message CreateBatchPaymentRequest {
 
 message CreateBatchPaymentResponse {
     BatchPayment batch_payment = 1;
+    mpcvault.rpc.v1.Status error = 2;
 }
 
 message GetBatchPaymentDetailsRequest {
@@ -368,6 +439,7 @@ message GetBatchPaymentDetailsRequest {
 
 message GetBatchPaymentDetailsResponse {
     BatchPayment batch_payment = 1;
+    mpcvault.rpc.v1.Status error = 2;
 }
 
 message BatchPayment {
diff --git a/mpcvault/platform/v1/error.proto b/mpcvault/platform/v1/error.proto
new file mode 100644
index 0000000..bc3a654
--- /dev/null
+++ b/mpcvault/platform/v1/error.proto
@@ -0,0 +1,34 @@
+// Copyright 2020 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+
+package mpcvault.platform.v1;
+
+option go_package = "go.mpcvault.com/genproto/mpcvaultapis/platform/v1;platform";
+option java_multiple_files = true;
+option java_outer_classname = "ServiceErrorProto";
+option java_package = "com.mpcvault.platform.v1";
+
+
+message ServiceError {
+    enum ErrorCode {
+        ERROR_CODE_UNSPECIFIED = 0;
+        ERROR_CODE_ORG_SUBSCRIBED_PLAN_LIMIT_EXCEED = 1;
+        ERROR_CODE_ORG_SUBSCRIBED_PLAN_EXPIRED = 2;
+        ERROR_CODE_ORG_SUBSCRIBED_PLAN_NOT_SUPPORT = 3;
+    }
+    ErrorCode error_code = 1;
+    string message = 2;
+}
diff --git a/mpcvault/rpc/v1/status.proto b/mpcvault/rpc/v1/status.proto
new file mode 100644
index 0000000..64a7f81
--- /dev/null
+++ b/mpcvault/rpc/v1/status.proto
@@ -0,0 +1,28 @@
+// Copyright 2020 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+
+package mpcvault.rpc.v1;
+
+import "google/protobuf/any.proto";
+
+option go_package = "go.mpcvault.com/genproto/mpcvaultapis/rpc/v1;rpc";
+option java_multiple_files = true;
+option java_outer_classname = "StatusProto";
+option java_package = "com.mpcvault.rpc.v1";
+
+message Status {
+    repeated google.protobuf.Any details = 1;
+}
\ No newline at end of file