fix base sepolia

src/app.module.ts

@@ -7,4 +7,4 @@ import { RpcModule } from './rpc.module';
   imports: [RabbitMQModule, RpcModule],
   providers: [AppService],
 })
-export class AppModule { }
+export class AppModule {}

src/app.service.ts

@@ -30,7 +30,7 @@ export class AppService implements OnModuleInit, OnModuleDestroy {
   constructor(
     readonly rabbitmqService: RabbitMQService,
     readonly rpcService: RpcService,
-  ) { }
+  ) {}
 
   onModuleInit() {
     try {

src/rabbitmq.service.ts

@@ -7,7 +7,7 @@ import RabbitMQ from '@togethercrew.dev/tc-messagebroker';
 export class RabbitMQService implements OnModuleInit {
   private readonly logger = new Logger(RabbitMQService.name);
 
-  constructor(private readonly configService: ConfigService) { }
+  constructor(private readonly configService: ConfigService) {}
 
   async onModuleInit() {
     const uri = this.configService.get<string>('rmq.uri');

src/rpc.module.ts

@@ -16,4 +16,4 @@ import { RpcService } from './rpc.service';
   providers: [RpcService],
   exports: [RpcService],
 })
-export class RpcModule { }
+export class RpcModule {}

src/rpc.service.ts

@@ -2,14 +2,14 @@
 import { Injectable, OnModuleInit, Logger } from '@nestjs/common';
 import { ConfigService } from '@nestjs/config';
 import { fallback, http, Transport } from 'viem';
-import { arbitrumSepolia, mainnet, sepolia } from 'viem/chains';
+import { arbitrumSepolia, baseSepolia, mainnet, sepolia } from 'viem/chains';
 
 @Injectable()
 export class RpcService implements OnModuleInit {
   private readonly logger = new Logger(RpcService.name);
   private transport = {};
 
-  constructor(private readonly configService: ConfigService) { }
+  constructor(private readonly configService: ConfigService) {}
 
   async onModuleInit() {
     const alchemyApiKey = this.configService.get<string>('rpc.alchemyApiKey');
@@ -28,6 +28,10 @@ export class RpcService implements OnModuleInit {
         http(`https://arb-sepolia.g.alchemy.com/v2/${alchemyApiKey}`),
         http(`https://arbitrum-sepolia.infura.io/v3/${infuraApiKey}`),
       ]),
+      [baseSepolia.id]: fallback([
+        http(`https://base-sepolia.g.alchemy.com/v2/${alchemyApiKey}`),
+        http(`https://base-sepolia.infura.io/v3/${infuraApiKey}`),
+      ]),
     };
   }