diff --git a/packages/restapi/src/lib/config.ts b/packages/restapi/src/lib/config.ts
index 20d902c0a..02c131471 100644
--- a/packages/restapi/src/lib/config.ts
+++ b/packages/restapi/src/lib/config.ts
@@ -1,5 +1,19 @@
 import Constants from './constants';
-
+import { coreABI } from './abis/core';
+import { commABI } from './abis/comm';
+import { tokenABI } from './abis/token';
+import {
+  mainnet,
+  goerli,
+  polygon,
+  polygonMumbai,
+  bsc,
+  bscTestnet,
+  optimism,
+  optimismGoerli,
+  polygonZkEvm,
+  polygonZkEvmTestnet,
+} from 'viem/chains';
 const { ENV } = Constants;
 
 // for methods not needing the entire config
@@ -31,6 +45,12 @@ const BLOCKCHAIN_NETWORK = {
 
 export type ALIAS_CHAIN = 'POLYGON' | 'BSC' | 'OPTIMISM' | 'POLYGONZKEVM' | "ARBITRUMONE";
 
+export const ETH_CHAIN_ID = {
+  [ENV.PROD]: 1,
+  [ENV.STAGING]: 5,
+  [ENV.DEV]: 5,
+  [ENV.LOCAL]: 5,
+};
 export const ALIAS_CHAIN_ID = {
   POLYGON: {
     [ENV.PROD]: 137,
@@ -54,7 +74,7 @@ export const ALIAS_CHAIN_ID = {
     [ENV.PROD]: 1101,
     [ENV.STAGING]: 1442,
     [ENV.DEV]: 1442,
-    [ENV.LOCAL]: 420,
+    [ENV.LOCAL]: 1442,
   },
   ARBITRUMONE: {
     [ENV.PROD]: 42161,
@@ -64,11 +84,76 @@ export const ALIAS_CHAIN_ID = {
   }
 };
 
+export const CHAIN_ID = {
+  ETHEREUM: ETH_CHAIN_ID,
+  ...ALIAS_CHAIN_ID,
+};
+
+export const CHAIN_NAME: { [key: number]: string } = {
+  // eth
+  1: 'ETHEREUM',
+  5: 'ETHEREUM',
+  // polygon
+  137: 'POLYGON',
+  80001: 'POLYGON',
+  // bsc
+  56: 'BSC',
+  97: 'BSC',
+  // optimism
+  10: 'OPTIMISM',
+  420: 'OPTIMISM',
+  // plygonzkevm
+  1101: 'POLYGONZKEVM',
+  1442: 'POLYGONZKEVM',
+};
 export interface ConfigType {
   API_BASE_URL: string;
   EPNS_COMMUNICATOR_CONTRACT: string;
 }
 
+
+export const VIEM_CORE_CONFIG = {
+  [ENV.PROD]: {
+    NETWORK: mainnet,
+    API_BASE_URL: API_BASE_URL[ENV.PROD],
+    EPNS_CORE_CONTRACT: '0x66329Fdd4042928BfCAB60b179e1538D56eeeeeE',
+  },
+  [ENV.STAGING]: {
+    NETWORK: goerli,
+    API_BASE_URL: API_BASE_URL[ENV.STAGING],
+    EPNS_CORE_CONTRACT: '0xd4E3ceC407cD36d9e3767cD189ccCaFBF549202C',
+  },
+  [ENV.DEV]: {
+    NETWORK: goerli,
+    API_BASE_URL: API_BASE_URL[ENV.DEV],
+    EPNS_CORE_CONTRACT: '0x23346B732d56d34EC4e890419fBFB8548216a799',
+  },
+  [ENV.LOCAL]: {
+    NETWORK: goerli,
+    API_BASE_URL: API_BASE_URL[ENV.DEV],
+    EPNS_CORE_CONTRACT: '0x23346B732d56d34EC4e890419fBFB8548216a799',
+  },
+};
+
+export const CORE_CONFIG = {
+  [ENV.PROD]: {
+    API_BASE_URL: API_BASE_URL[ENV.PROD],
+    EPNS_CORE_CONTRACT: '0x66329Fdd4042928BfCAB60b179e1538D56eeeeeE',
+  },
+  [ENV.STAGING]: {
+    API_BASE_URL: API_BASE_URL[ENV.STAGING],
+    EPNS_CORE_CONTRACT: '0xd4E3ceC407cD36d9e3767cD189ccCaFBF549202C',
+  },
+  [ENV.DEV]: {
+    API_BASE_URL: API_BASE_URL[ENV.DEV],
+    EPNS_CORE_CONTRACT: '0x23346B732d56d34EC4e890419fBFB8548216a799',
+  },
+  [ENV.LOCAL]: {
+    API_BASE_URL: API_BASE_URL[ENV.DEV],
+    EPNS_CORE_CONTRACT: '0x23346B732d56d34EC4e890419fBFB8548216a799',
+  },
+};
+
 const CONFIG = {
   [ENV.PROD]: {
     [BLOCKCHAIN_NETWORK.ETH_MAINNET]: {
@@ -177,3 +262,145 @@ const CONFIG = {
 };
 
 export default CONFIG;
+export const TOKEN = {
+  [ENV.PROD]: '0xf418588522d5dd018b425E472991E52EBBeEEEEE',
+  [ENV.STAGING]: '0x2b9bE9259a4F5Ba6344c1b1c07911539642a2D33',
+  [ENV.DEV]: '0x2b9bE9259a4F5Ba6344c1b1c07911539642a2D33',
+  [ENV.LOCAL]: '0x2b9bE9259a4F5Ba6344c1b1c07911539642a2D33',
+};
+
+export const TOKEN_VIEM_NETWORK_MAP = {
+  [ENV.PROD]: mainnet,
+  [ENV.STAGING]: goerli,
+  [ENV.DEV]: goerli,
+  [ENV.LOCAL]: goerli,
+}
+
+export const MIN_TOKEN_BALANCE = {
+  [ENV.PROD]: 50,
+  [ENV.STAGING]: 50,
+  [ENV.DEV]: 50,
+  [ENV.LOCAL]: 50,
+};
+export const ABIS = {
+  CORE: coreABI,
+  COMM: commABI,
+  TOKEN: tokenABI,
+};
+
+export const CHANNEL_TYPE = {
+  TIMEBOUND: 4,
+  GENERAL: 2,
+};
+
+
+export const VIEM_CONFIG = {
+  [ENV.PROD]: {
+    [BLOCKCHAIN_NETWORK.ETH_MAINNET]: {
+      NETWORK: mainnet,
+      API_BASE_URL: API_BASE_URL[ENV.PROD],
+      EPNS_COMMUNICATOR_CONTRACT: '0xb3971BCef2D791bc4027BbfedFb47319A4AAaaAa',
+    },
+    [BLOCKCHAIN_NETWORK.POLYGON_MAINNET]: {
+      NETWORK: polygon,
+      API_BASE_URL: API_BASE_URL[ENV.PROD],
+      EPNS_COMMUNICATOR_CONTRACT: '0xb3971BCef2D791bc4027BbfedFb47319A4AAaaAa',
+    },
+    [BLOCKCHAIN_NETWORK.BSC_MAINNET]: {
+      NETWORK: bsc,
+      API_BASE_URL: API_BASE_URL[ENV.PROD],
+      EPNS_COMMUNICATOR_CONTRACT: '0xb3971BCef2D791bc4027BbfedFb47319A4AAaaAa',
+    },
+    [BLOCKCHAIN_NETWORK.OPTIMISM_MAINNET]: {
+      NETWORK: optimism,
+      API_BASE_URL: API_BASE_URL[ENV.PROD],
+      EPNS_COMMUNICATOR_CONTRACT: '0xb3971BCef2D791bc4027BbfedFb47319A4AAaaAa',
+    },
+    [BLOCKCHAIN_NETWORK.POLYGON_ZK_EVM_MAINNET]: {
+      NETWORK: polygonZkEvm,
+      API_BASE_URL: API_BASE_URL[ENV.PROD],
+      EPNS_COMMUNICATOR_CONTRACT: '0xb3971BCef2D791bc4027BbfedFb47319A4AAaaAa',
+    },
+  },
+  [ENV.STAGING]: {
+    [BLOCKCHAIN_NETWORK.ETH_GOERLI]: {
+      NETWORK: goerli,
+      API_BASE_URL: API_BASE_URL[ENV.STAGING],
+      EPNS_COMMUNICATOR_CONTRACT: '0xb3971BCef2D791bc4027BbfedFb47319A4AAaaAa',
+    },
+    [BLOCKCHAIN_NETWORK.POLYGON_MUMBAI]: {
+      NETWORK: polygonMumbai,
+      API_BASE_URL: API_BASE_URL[ENV.STAGING],
+      EPNS_COMMUNICATOR_CONTRACT: '0xb3971BCef2D791bc4027BbfedFb47319A4AAaaAa',
+    },
+    [BLOCKCHAIN_NETWORK.BSC_TESTNET]: {
+      NETWORK: bscTestnet,
+      API_BASE_URL: API_BASE_URL[ENV.STAGING],
+      EPNS_COMMUNICATOR_CONTRACT: '0xb3971BCef2D791bc4027BbfedFb47319A4AAaaAa',
+    },
+    [BLOCKCHAIN_NETWORK.OPTIMISM_TESTNET]: {
+      NETWORK: optimismGoerli,
+      API_BASE_URL: API_BASE_URL[ENV.STAGING],
+      EPNS_COMMUNICATOR_CONTRACT: '0xb3971BCef2D791bc4027BbfedFb47319A4AAaaAa',
+    },
+    [BLOCKCHAIN_NETWORK.POLYGON_ZK_EVM_TESTNET]: {
+      NETWORK: polygonZkEvmTestnet,
+      API_BASE_URL: API_BASE_URL[ENV.STAGING],
+      EPNS_COMMUNICATOR_CONTRACT: '0xb3971BCef2D791bc4027BbfedFb47319A4AAaaAa',
+    },
+  },
+  [ENV.DEV]: {
+    [BLOCKCHAIN_NETWORK.ETH_GOERLI]: {
+      NETWORK: goerli,
+      API_BASE_URL: API_BASE_URL[ENV.DEV],
+      EPNS_COMMUNICATOR_CONTRACT: '0xc064F30bac07e84500c97A04D21a9d1bfFC72Ec0',
+    },
+    [BLOCKCHAIN_NETWORK.POLYGON_MUMBAI]: {
+      NETWORK: polygonMumbai,
+      API_BASE_URL: API_BASE_URL[ENV.DEV],
+      EPNS_COMMUNICATOR_CONTRACT: '0xAf55BE8e6b0d6107891bA76eADeEa032ef8A4504',
+    },
+    [BLOCKCHAIN_NETWORK.BSC_TESTNET]: {
+      NETWORK: bscTestnet,
+      API_BASE_URL: API_BASE_URL[ENV.DEV],
+      EPNS_COMMUNICATOR_CONTRACT: '0x4132061E3349ff36cFfCadA460E10Bd4f31F7ea8',
+    },
+    [BLOCKCHAIN_NETWORK.OPTIMISM_TESTNET]: {
+      NETWORK: optimismGoerli,
+      API_BASE_URL: API_BASE_URL[ENV.DEV],
+      EPNS_COMMUNICATOR_CONTRACT: '0x4305D572F2bf38Fc2AE8D0172055b1EFd18F57a6',
+    },
+    [BLOCKCHAIN_NETWORK.POLYGON_ZK_EVM_TESTNET]: {
+      NETWORK: polygonZkEvmTestnet,
+      API_BASE_URL: API_BASE_URL[ENV.DEV],
+      EPNS_COMMUNICATOR_CONTRACT: '0x630b152e4185c63D7177c656b56b26f878C61572',
+    },
+  },
+  [ENV.LOCAL]: {
+    [BLOCKCHAIN_NETWORK.ETH_GOERLI]: {
+      NETWORK: goerli,
+      API_BASE_URL: API_BASE_URL[ENV.DEV],
+      EPNS_COMMUNICATOR_CONTRACT: '0xc064F30bac07e84500c97A04D21a9d1bfFC72Ec0',
+    },
+    [BLOCKCHAIN_NETWORK.POLYGON_MUMBAI]: {
+      NETWORK: polygonMumbai,
+      API_BASE_URL: API_BASE_URL[ENV.DEV],
+      EPNS_COMMUNICATOR_CONTRACT: '0xAf55BE8e6b0d6107891bA76eADeEa032ef8A4504',
+    },
+    [BLOCKCHAIN_NETWORK.BSC_TESTNET]: {
+      NETWORK: bscTestnet,
+      API_BASE_URL: API_BASE_URL[ENV.DEV],
+      EPNS_COMMUNICATOR_CONTRACT: '0x4132061E3349ff36cFfCadA460E10Bd4f31F7ea8',
+    },
+    [BLOCKCHAIN_NETWORK.OPTIMISM_TESTNET]: {
+      NETWORK: optimismGoerli,
+      API_BASE_URL: API_BASE_URL[ENV.DEV],
+      EPNS_COMMUNICATOR_CONTRACT: '0x4305D572F2bf38Fc2AE8D0172055b1EFd18F57a6',
+    },
+    [BLOCKCHAIN_NETWORK.POLYGON_ZK_EVM_TESTNET]: {
+      NETWORK: polygonZkEvmTestnet,
+      API_BASE_URL: API_BASE_URL[ENV.DEV],
+      EPNS_COMMUNICATOR_CONTRACT: '0x630b152e4185c63D7177c656b56b26f878C61572',
+    },
+  },
+};
\ No newline at end of file