diff --git a/djed-sdk/src/constants.js b/djed-sdk/src/constants.js
index 2b676f5..6bc8671 100644
--- a/djed-sdk/src/constants.js
+++ b/djed-sdk/src/constants.js
@@ -1,23 +1,50 @@
 export const BC_DECIMALS = 18;
 export const SCALING_DECIMALS = 24;
 export const TRANSACTION_USD_LIMIT = 10000;
-export const FEE_UI=0.01;
+export const FEE_UI = 0.01;
 export const REFRESH_PERIOD = 4000;
 export const CONFIRMATION_WAIT_PERIOD = REFRESH_PERIOD + 1000;
 
 export const TRANSACTION_VALIDITY = {
-    OK: "Transaction is valid.",
-    WALLET_NOT_CONNECTED: "Wallet not connected",
-    WRONG_NETWORK: "Wallet connected to the wrong network",
-    NONNUMERIC_INPUT: "Amount has to be a number",
-    NEGATIVE_INPUT: "Amount cannot be negative",
-    ZERO_INPUT: "Amount cannot be zero",
-    INSUFFICIENT_BC: "Insufficient balance",
-    INSUFFICIENT_SC: "Insufficient StableCoin balance",
-    INSUFFICIENT_RC: "Insufficient ReserveCoin balance",
-    RESERVE_RATIO_LOW: "Reserve ratio would drop below the minimum",
-    RESERVE_RATIO_HIGH: "Reserve ratio would rise above the maximum",
-    TRANSACTION_LIMIT_REACHED: "Transaction limit reached"
-  };
+  OK: "Transaction is valid.",
+  WALLET_NOT_CONNECTED: "Wallet not connected",
+  WRONG_NETWORK: "Wallet connected to the wrong network",
+  NONNUMERIC_INPUT: "Amount has to be a number",
+  NEGATIVE_INPUT: "Amount cannot be negative",
+  ZERO_INPUT: "Amount cannot be zero",
+  INSUFFICIENT_BC: "Insufficient balance",
+  INSUFFICIENT_SC: "Insufficient StableCoin balance",
+  INSUFFICIENT_RC: "Insufficient ReserveCoin balance",
+  RESERVE_RATIO_LOW: "Reserve ratio would drop below the minimum",
+  RESERVE_RATIO_HIGH: "Reserve ratio would rise above the maximum",
+  TRANSACTION_LIMIT_REACHED: "Transaction limit reached"
+};
 
 
+export const NETWORKS = {
+  sepolia: {
+    name: "Sepolia",
+    chainId: 11155111,
+    rpcUrl: null, // Developers should provide their RPC endpoint
+    djedAddress: null, // DJED contract address for Sepolia
+    oracleAddress: null // Oracle contract address for Sepolia
+  },
+
+  mainnet: {
+    name: "Ethereum Mainnet",
+    chainId: 1,
+    rpcUrl: null, // Developers should provide their RPC endpoint
+    djedAddress: null, // DJED contract address for Mainnet
+    oracleAddress: null // Oracle contract address for Mainnet
+  }
+};
+
+export const getNetworkConfig = (networkName = "sepolia") => {
+  const config = NETWORKS[networkName];
+
+  if (!config) {
+    throw new Error(`Unsupported network: ${networkName}`);
+  }
+
+  return config;
+};
\ No newline at end of file
diff --git a/djed-sdk/src/index.js b/djed-sdk/src/index.js
index 9c2cbc2..71844a4 100644
--- a/djed-sdk/src/index.js
+++ b/djed-sdk/src/index.js
@@ -1,4 +1,5 @@
 export { getWeb3 } from "./web3";
+
 export {
   calculateBcUsdEquivalent,
   calculateRcUsdEquivalent,
@@ -9,3 +10,5 @@ export {
 
 export * from "./djed/index";
 export * from "./oracle";
+
+export * from "./constants";
\ No newline at end of file