diff --git a/__tests__/tilt/helpers/helpers.ts b/__tests__/tilt/helpers/helpers.ts
index 24e7d944fb..962eca2540 100644
--- a/__tests__/tilt/helpers/helpers.ts
+++ b/__tests__/tilt/helpers/helpers.ts
@@ -1,10 +1,12 @@
 import {
   ChainAddress,
+  ChainConfig,
   ChainContext,
   ChainName,
   PlatformName,
   PlatformToChains,
   Signer,
+  WormholeConfig,
   nativeChainAddress,
   rpcAddress,
 } from "@wormhole-foundation/connect-sdk";
@@ -94,3 +96,22 @@ export async function getCosmosSigner(
 
   return new CosmosSigner(chain.chain, signingClient, acct);
 }
+
+
+
+// const conf = overrideChainSetting(CONFIG[network], {
+//     "Ethereum": { "rpc": "http://localhost:8545" },
+//     "Bsc": { "rpc": "http://localhost:8546" },
+//     "Solana": { "rpc": "http://localhost:8899" }
+// })
+
+export type ConfigOverride = {
+  [key: string]: Partial<ChainConfig>
+}
+export function overrideChainSetting(conf: WormholeConfig, overrides: ConfigOverride): WormholeConfig {
+  for (const [cn, oride] of Object.entries(overrides)) {
+    // @ts-ignore
+    conf.chains[cn] = { ...conf.chains[cn], ...oride }
+  }
+  return conf
+}
diff --git a/__tests__/tilt/tokenbridge.test.ts b/__tests__/tilt/tokenbridge.test.ts
index 81055ee6ec..c5e7c555c2 100644
--- a/__tests__/tilt/tokenbridge.test.ts
+++ b/__tests__/tilt/tokenbridge.test.ts
@@ -1,30 +1,15 @@
 import { TokenBridge, CONFIG, ChainConfig, Wormhole, WormholeConfig, isWormholeMessageId, nativeChainAddress, normalizeAmount, NativeAddress, Signer, ChainAddress } from "@wormhole-foundation/connect-sdk";
 import { signSendWait } from "@wormhole-foundation/connect-sdk/src";
+import { EvmPlatform } from "@wormhole-foundation/connect-sdk-evm";
 import { SolanaAddress, SolanaPlatform } from "@wormhole-foundation/connect-sdk-solana";
-import { EvmAddress, EvmPlatform } from "@wormhole-foundation/connect-sdk-evm";
-import { getEvmSigner, getSolSigner, getStuff } from './helpers';
+import { getStuff } from './helpers';
 
-type ConfigOverride = {
-    [key: string]: Partial<ChainConfig>
-}
-
-function overrideChainSetting(conf: WormholeConfig, overrides: ConfigOverride): WormholeConfig {
-    for (const [cn, oride] of Object.entries(overrides)) {
-        // @ts-ignore
-        conf.chains[cn] = { ...conf.chains[cn], ...oride }
-    }
-    return conf
-}
+jest.setTimeout(10 * 60 * 1000)
 
 const network = "Devnet"
 const allPlatformCtrs = [SolanaPlatform, EvmPlatform];
-const conf = overrideChainSetting(CONFIG[network], {
-    "Ethereum": { "rpc": "http://localhost:8545" },
-    "Bsc": { "rpc": "http://localhost:8546" },
-    "Solana": { "rpc": "http://localhost:8899" }
-})
+const conf = CONFIG[network]
 
-jest.setTimeout(10 * 60 * 1000)
 describe("Tilt Token Bridge Tests", () => {
     const wh = new Wormhole(network, allPlatformCtrs, conf)
 
diff --git a/core/base/src/constants/explorer.ts b/core/base/src/constants/explorer.ts
index da63e49a8f..666125ee90 100644
--- a/core/base/src/constants/explorer.ts
+++ b/core/base/src/constants/explorer.ts
@@ -292,7 +292,7 @@ const explorerConfig = [
   ]
 >;
 
-const explorerConfs = constMap(explorerConfig);
+export const explorerConfs = constMap(explorerConfig);
 
 export const explorerConfigs = (network: Network, chain: ChainName) =>
   network === "Devnet"
diff --git a/core/base/src/constants/rpc.ts b/core/base/src/constants/rpc.ts
index 752f54f7b3..3abf5544b7 100644
--- a/core/base/src/constants/rpc.ts
+++ b/core/base/src/constants/rpc.ts
@@ -55,10 +55,18 @@ const rpcConfig = [
       ["Terra2", ""],
     ],
   ],
+  [
+    "Devnet",
+    [
+      ["Ethereum", "http://localhost:8545"],
+      ["Bsc", "http://localhost:8546"],
+      ["Solana", "http://localhost:8899"],
+    ]
+  ]
 ] as const satisfies RoArray<
-  readonly ["Mainnet" | "Testnet", RoArray<readonly [ChainName, string]>]
+  readonly [Network, RoArray<readonly [ChainName, string]>]
 >;
 
 const rpc = constMap(rpcConfig);
 export const rpcAddress = (network: Network, chain: ChainName) =>
-  network === "Devnet" ? undefined : rpc.get(network, chain);
+  rpc.has(network, chain) ? rpc.get(network, chain) : "";