diff --git a/src/abis/core-mx-life-bonding-sc.abi.json b/src/abis/core-mx-life-bonding-sc.abi.json
index 46b3819..f27e3fa 100644
--- a/src/abis/core-mx-life-bonding-sc.abi.json
+++ b/src/abis/core-mx-life-bonding-sc.abi.json
@@ -106,6 +106,39 @@
             ],
             "outputs": []
         },
+        {
+            "name": "setVaultNonce",
+            "mutability": "mutable",
+            "inputs": [
+                {
+                    "name": "token_identifier",
+                    "type": "TokenIdentifier"
+                },
+                {
+                    "name": "nonce",
+                    "type": "u64"
+                }
+            ],
+            "outputs": []
+        },
+        {
+            "name": "topUpVault",
+            "mutability": "mutable",
+            "payableInTokens": [
+                "*"
+            ],
+            "inputs": [
+                {
+                    "name": "token_identifier",
+                    "type": "TokenIdentifier"
+                },
+                {
+                    "name": "nonce",
+                    "type": "u64"
+                }
+            ],
+            "outputs": []
+        },
         {
             "name": "getCompensationBlacklist",
             "mutability": "readonly",
@@ -132,6 +165,25 @@
                 }
             ]
         },
+        {
+            "name": "getAddressVaultNone",
+            "mutability": "readonly",
+            "inputs": [
+                {
+                    "name": "address",
+                    "type": "Address"
+                },
+                {
+                    "name": "token_identifier",
+                    "type": "TokenIdentifier"
+                }
+            ],
+            "outputs": [
+                {
+                    "type": "u64"
+                }
+            ]
+        },
         {
             "name": "getBond",
             "mutability": "readonly",
diff --git a/src/bond.ts b/src/bond.ts
index 860c45c..4e6cbe6 100644
--- a/src/bond.ts
+++ b/src/bond.ts
@@ -16,6 +16,7 @@ import {
 import {
   EnvironmentsEnum,
   bondContractAddress,
+  dataNftTokenIdentifier,
   itheumTokenIdentifier
 } from './config';
 import { ErrContractQuery } from './errors';
@@ -179,6 +180,36 @@ export class BondContract extends Contract {
     }
   }
 
+  /**
+   * Returns the address vault nonce for a specific address
+   * @param address address to query
+   * @param tokenIdentifier token identifier to query [default token identifier based on the {@link EnvironmentsEnum}]
+   */
+  async viewAddressVaultNonce(
+    address: IAddress,
+    tokenIdentifier = itheumTokenIdentifier[this.env as EnvironmentsEnum]
+  ): Promise<number> {
+    const interaction = this.contract.methodsExplicit.getAddressVaultNone([
+      new AddressValue(address),
+      new TokenIdentifierValue(tokenIdentifier)
+    ]);
+    const query = interaction.buildQuery();
+    const queryResponse = await this.networkProvider.queryContract(query);
+    const endpointDefinition = interaction.getEndpoint();
+    const { firstValue, returnCode } = new ResultsParser().parseQueryResponse(
+      queryResponse,
+      endpointDefinition
+    );
+    if (returnCode.isSuccess()) {
+      return firstValue?.valueOf().toNumber();
+    } else {
+      throw new ErrContractQuery(
+        'viewAddressVaultNonce',
+        returnCode.toString()
+      );
+    }
+  }
+
   /**
    * Returns the contract owner address
    */
@@ -1129,6 +1160,40 @@ export class BondContract extends Contract {
     return bondTx;
   }
 
+  /**
+   * Builds a `topUpVault` transaction
+   * @param senderAddress the address of the sender
+   * @param payment the payment for the top up (tokenIdentifier, nonce and amount)
+   * @param nonce the nonce of the Data Nft
+   * @param tokenIdentifier the token identifier of the Data Nft [default is the Data Nft token identifier based on {@link EnvironmentsEnum}]
+   */
+  topUpVault(
+    senderAddress: IAddress,
+    payment: {
+      tokenIdentifier: string;
+      amount: BigNumber.Value;
+    },
+    nonce: number,
+    tokenIdentifier = dataNftTokenIdentifier[this.env as EnvironmentsEnum]
+  ): Transaction {
+    const topUpVaultTx = new Transaction({
+      value: 0,
+      data: new ContractCallPayloadBuilder()
+        .setFunction(new ContractFunction('ESDTTransfer'))
+        .addArg(new TokenIdentifierValue(payment.tokenIdentifier))
+        .addArg(new BigUIntValue(payment.amount))
+        .addArg(new StringValue('topUpVault'))
+        .addArg(new TokenIdentifierValue(tokenIdentifier))
+        .addArg(new U64Value(nonce))
+        .build(),
+      receiver: this.contract.getAddress(),
+      sender: senderAddress,
+      gasLimit: 40_000_000,
+      chainID: this.chainID
+    });
+    return topUpVaultTx;
+  }
+
   /**
    * Builds a `bond` transaction with NFT/SFT transfer
    * @param senderAddress the address of the sender
@@ -1293,6 +1358,32 @@ export class BondContract extends Contract {
     return renewTx;
   }
 
+  /**
+   * Builds a `setVaultNonce` transaction
+   * @param senderAddress the address of the sender
+   * @param nonce the nonce to set
+   * @param tokenIdentifier the Data Nft token identifier [default is the Data Nft token identifier based on {@link EnvironmentsEnum}]
+   */
+  setVaultNonce(
+    senderAddress: IAddress,
+    nonce: number,
+    tokenIdentifier = dataNftTokenIdentifier[this.env as EnvironmentsEnum]
+  ): Transaction {
+    const tx = new Transaction({
+      value: 0,
+      data: new ContractCallPayloadBuilder()
+        .setFunction('setVaultNonce')
+        .addArg(new TokenIdentifierValue(tokenIdentifier))
+        .addArg(new U64Value(nonce))
+        .build(),
+      receiver: this.contract.getAddress(),
+      sender: senderAddress,
+      gasLimit: 20_000_000,
+      chainID: this.chainID
+    });
+    return tx;
+  }
+
   /**
    * Builds a `proof` transaction
    * @param senderAddress the address of the sender