diff --git a/app/exp001/actions.ts b/app/exp001/actions.ts
index 3e3663b..581b235 100644
--- a/app/exp001/actions.ts
+++ b/app/exp001/actions.ts
@@ -7,7 +7,7 @@ import {
 import { http } from '../../packages/starkweb/dist/esm/clients/transports/http';
 
 export const client = createPublicClient({
-    transport: http('https://starknet-sepolia.infura.io/v3/db72641028ee47f5b18bcbb791a3f829'),
+    transport: http(`https://starknet-sepolia.infura.io/v3/${process.env.INFURA_API_KEY}`),
     chain: sepolia,
   })
  
diff --git a/app/exp001/index.ts b/app/exp001/index.ts
index 503ebd9..adbe3c9 100644
--- a/app/exp001/index.ts
+++ b/app/exp001/index.ts
@@ -6,11 +6,11 @@ import { sepolia } from '../../packages/starkweb/dist/esm/chains/definitions/sep
 import { accountABI } from '../../packages/starkweb/dist/esm/utils/siws/account-contract-abi';
 import { stringify } from '../../packages/starkweb/dist/esm/utils/json';
 // export const client = createPublicClient({
-//   transport: http('https://starknet-sepolia.infura.io/v3/db72641028ee47f5b18bcbb791a3f829'),
+//   transport: http(`https://starknet-sepolia.infura.io/v3/${process.env.INFURA_API_KEY}`),
 //   chain: sepolia,
 // })
 
-const result = await http('https://starknet-sepolia.infura.io/v3/db72641028ee47f5b18bcbb791a3f829')
+const result = await http(`https://starknet-sepolia.infura.io/v3/${process.env.INFURA_API_KEY}`)
 const client = result({
   chain: sepolia,
   retryCount: 0,
diff --git a/app/exp001/multicall.ts b/app/exp001/multicall.ts
index 87e578f..113d437 100644
--- a/app/exp001/multicall.ts
+++ b/app/exp001/multicall.ts
@@ -6,7 +6,7 @@ import { sepolia } from '../../packages/starkweb/dist/esm/chains/definitions/sep
 
 
 export const client = createPublicClient({
-    transport: http('https://starknet-sepolia.infura.io/v3/db72641028ee47f5b18bcbb791a3f829'),
+    transport: http(`https://starknet-sepolia.infura.io/v3/${process.env.INFURA_API_KEY}`),
     chain: sepolia,
   })
   
diff --git a/app/starkweb-client/src/index.ts b/app/starkweb-client/src/index.ts
index acfd4d3..50449c1 100644
--- a/app/starkweb-client/src/index.ts
+++ b/app/starkweb-client/src/index.ts
@@ -15,7 +15,7 @@ import { mainnet, sepolia } from 'starkweb/chains';
 
 const publicClient = createPublicClient({
   chain: mainnet,
-  transport: http('https://starknet-mainnet.infura.io/v3/db72641028ee47f5b18bcbb791a3f829'),
+  transport: http(`https://starknet-mainnet.infura.io/v3/${process.env.INFURA_API_KEY}`),
 });
 const id = await getStarknetId(publicClient, {
   domain: 'solene.stark',