diff --git a/packages/networks/src/index.test.ts b/packages/networks/src/index.test.ts
index 2b3205a..a4326e7 100644
--- a/packages/networks/src/index.test.ts
+++ b/packages/networks/src/index.test.ts
@@ -1,4 +1,5 @@
 import { describe, it, expect } from 'vitest';
+import * as rootBarrel from './index.js';
 import { SUPPORTED_CHAINS, CHAINS, getPublicRpcUrl } from './index.js';
 
 describe('CHAINS / SUPPORTED_CHAINS', () => {
@@ -40,6 +41,29 @@ describe('CHAINS / SUPPORTED_CHAINS', () => {
   });
 });
 
+describe('root barrel viem isolation', () => {
+  it('does not export wagmi symbols', () => {
+    expect((rootBarrel as Record<string, unknown>)['ethereumWagmi']).toBeUndefined();
+    expect((rootBarrel as Record<string, unknown>)['baseWagmi']).toBeUndefined();
+    expect((rootBarrel as Record<string, unknown>)['arbitrumWagmi']).toBeUndefined();
+    expect((rootBarrel as Record<string, unknown>)['optimismWagmi']).toBeUndefined();
+    expect((rootBarrel as Record<string, unknown>)['polygonWagmi']).toBeUndefined();
+    expect((rootBarrel as Record<string, unknown>)['ALL_WAGMI_CHAINS']).toBeUndefined();
+  });
+
+  it('exports the viem-free surface', () => {
+    expect(rootBarrel.CHAINS).toBeDefined();
+    expect(rootBarrel.SUPPORTED_CHAINS).toBeDefined();
+    expect(rootBarrel.TOKENS).toBeDefined();
+    expect(rootBarrel.SUPPORTED_TOKENS).toBeDefined();
+    expect(typeof rootBarrel.getPublicRpcUrl).toBe('function');
+    expect(typeof rootBarrel.getChainConfig).toBe('function');
+    expect(typeof rootBarrel.tryGetChainConfig).toBe('function');
+    expect(typeof rootBarrel.getExplorerTxUrl).toBe('function');
+    expect(typeof rootBarrel.getExplorerAddressUrl).toBe('function');
+  });
+});
+
 describe('getPublicRpcUrl', () => {
   it.each([1, 8453, 42161, 10, 137] as const)(
     'returns a non-empty URL for chainId %i',
diff --git a/packages/networks/src/index.ts b/packages/networks/src/index.ts
index 45109f3..4c5f79f 100644
--- a/packages/networks/src/index.ts
+++ b/packages/networks/src/index.ts
@@ -3,11 +3,3 @@ export { TOKENS, SUPPORTED_TOKENS, getTokenInfo, type TokenInfo } from './tokens
 export { getPublicRpcUrl } from './rpc.js';
 export { getChainConfig, tryGetChainConfig } from './get-chain.js';
 export { getExplorerTxUrl, getExplorerAddressUrl } from './explorer.js';
-export {
-  ethereumWagmi,
-  baseWagmi,
-  arbitrumWagmi,
-  optimismWagmi,
-  polygonWagmi,
-  ALL_WAGMI_CHAINS,
-} from './wagmi.js';