From 99cb5d61dafed0b9427b39dc12e3ff3ea3ecd988 Mon Sep 17 00:00:00 2001
From: RaviChauhan <1chauhanravi0@gmail.com>
Date: Mon, 23 Feb 2026 12:58:44 +0530
Subject: [PATCH 1/2] Feat: Introduce viem publicClient and walletClient
 abstraction

---
 djed-sdk/src/blockchain/client.js | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 djed-sdk/src/blockchain/client.js

diff --git a/djed-sdk/src/blockchain/client.js b/djed-sdk/src/blockchain/client.js
new file mode 100644
index 0000000..97b805f
--- /dev/null
+++ b/djed-sdk/src/blockchain/client.js
@@ -0,0 +1,16 @@
+import { createPublicClient, createWalletClient, http } from "viem"
+import { mainnet } from "viem/chains"
+
+export const createViemClients = (rpcUrl) => {
+  const publicClient = createPublicClient({
+    chain: mainnet,
+    transport: http(rpcUrl),
+  })
+
+  const walletClient = createWalletClient({
+    chain: mainnet,
+    transport: http(rpcUrl),
+  })
+
+  return { publicClient, walletClient }
+}
\ No newline at end of file

From 9368ad29e998ca71c89f49f260d9e2b147c2a1fa Mon Sep 17 00:00:00 2001
From: RaviChauhan <1chauhanravi0@gmail.com>
Date: Mon, 23 Feb 2026 13:33:47 +0530
Subject: [PATCH 2/2] Refactor: Migrate read-only contract calls from web3 to
 viem publicClient

---
 djed-sdk/src/blockchain/client.js | 16 ++++++++++++++++
 djed-sdk/src/djed/stableCoin.js   | 23 +++++++++++++++++++----
 2 files changed, 35 insertions(+), 4 deletions(-)
 create mode 100644 djed-sdk/src/blockchain/client.js

diff --git a/djed-sdk/src/blockchain/client.js b/djed-sdk/src/blockchain/client.js
new file mode 100644
index 0000000..685040f
--- /dev/null
+++ b/djed-sdk/src/blockchain/client.js
@@ -0,0 +1,16 @@
+import { createPublicClient, createWalletClient, http } from "viem"
+import { mainnet } from "viem/chains"
+
+export const createViemClients = (rpcUrl) => {
+    const publicClient = createPublicClient({
+        chain: mainnet,
+        transport: http(rpcUrl),
+    })
+
+    const walletClient = createWalletClient({
+        chain: mainnet,
+        transport: http(rpcUrl),
+    })
+
+    return { publicClient, walletClient }
+}
\ No newline at end of file
diff --git a/djed-sdk/src/djed/stableCoin.js b/djed-sdk/src/djed/stableCoin.js
index f845772..7df8d1e 100644
--- a/djed-sdk/src/djed/stableCoin.js
+++ b/djed-sdk/src/djed/stableCoin.js
@@ -1,5 +1,7 @@
 import { BC_DECIMALS, TRANSACTION_VALIDITY } from "../constants";
 import { decimalScaling, buildTx } from "../helpers";
+import { createViemClients } from "../blockchain/client";
+const { publicClient } = createViemClients(process.env.RPC_URL);
 import {
   tradeDataPriceCore,
   getFees,
@@ -79,7 +81,7 @@ export const tradeDataPriceSellSc = async (djed, scDecimals, amountScaled) => {
 export const buyScTx = (djed, payer, receiver, value, UI, DJED_ADDRESS) => {
   // `receiver` will get the stablecoins
   const data = djed.methods.buyStableCoins(receiver, FEE_UI_UNSCALED, UI).encodeABI();
-  
+
   // `payer` is sending the funds
   return buildTx(payer, DJED_ADDRESS, value, data);
 };
@@ -111,9 +113,22 @@ export const calculateFutureScPrice = async ({
 }) => {
   try {
     const [scTargetPrice, scSupply, ratio] = await Promise.all([
-      web3Promise(oracleContract, "readData"),
-      web3Promise(stableCoinContract, "totalSupply"),
-      web3Promise(djedContract, "R", 0),
+      publicClient.readContract({
+        address: oracleAddress,
+        abi: OracleABI,
+        functionName: "readData",
+      }),
+      publicClient.readContract({
+        address: stableCoinAddress,
+        abi: CoinABI,
+        functionName: "totalSupply",
+      }),
+      publicClient.readContract({
+        address: djedAddress,
+        abi: DjedABI,
+        functionName: "R",
+        args: [0],
+      }),
     ]);
 
     const futureScSupply = BigInt(scSupply) + BigInt(amountSC);