diff --git a/src/plugins/contracts/provider-vitest-registry.ts b/src/plugins/contracts/provider-vitest-registry.ts
index 205ff65e0c0..75e48540785 100644
--- a/src/plugins/contracts/provider-vitest-registry.ts
+++ b/src/plugins/contracts/provider-vitest-registry.ts
@@ -1,12 +1,4 @@
-import { buildAnthropicProvider } from "../../../extensions/anthropic/api.js";
-import {
-  buildGoogleGeminiCliProvider,
-  buildGoogleProvider,
-} from "../../../extensions/google/api.js";
-import {
-  buildOpenAICodexProviderPlugin,
-  buildOpenAIProvider,
-} from "../../../extensions/openai/api.js";
+import { loadBundledPluginApiSync } from "../../test-utils/bundled-plugin-public-surface.js";
 import type { ProviderPlugin } from "../types.js";
 
 export type ProviderContractEntry = {
@@ -16,13 +8,20 @@ export type ProviderContractEntry = {
 
 let providerContractRegistryCache: ProviderContractEntry[] | null = null;
 
+type AnthropicApiSurface = typeof import("../../../extensions/anthropic/api.js");
+type GoogleApiSurface = typeof import("../../../extensions/google/api.js");
+type OpenAIApiSurface = typeof import("../../../extensions/openai/api.js");
+
 export function loadVitestProviderContractRegistry(): ProviderContractEntry[] {
+  const anthropicApi = loadBundledPluginApiSync<AnthropicApiSurface>("anthropic");
+  const googleApi = loadBundledPluginApiSync<GoogleApiSurface>("google");
+  const openAIApi = loadBundledPluginApiSync<OpenAIApiSurface>("openai");
   providerContractRegistryCache ??= [
-    { pluginId: "anthropic", provider: buildAnthropicProvider() },
-    { pluginId: "google", provider: buildGoogleProvider() },
-    { pluginId: "google", provider: buildGoogleGeminiCliProvider() },
-    { pluginId: "openai", provider: buildOpenAIProvider() },
-    { pluginId: "openai", provider: buildOpenAICodexProviderPlugin() },
+    { pluginId: "anthropic", provider: anthropicApi.buildAnthropicProvider() },
+    { pluginId: "google", provider: googleApi.buildGoogleProvider() },
+    { pluginId: "google", provider: googleApi.buildGoogleGeminiCliProvider() },
+    { pluginId: "openai", provider: openAIApi.buildOpenAIProvider() },
+    { pluginId: "openai", provider: openAIApi.buildOpenAICodexProviderPlugin() },
   ];
   return providerContractRegistryCache;
 }
diff --git a/src/plugins/contracts/web-provider-vitest-registry.ts b/src/plugins/contracts/web-provider-vitest-registry.ts
index 7be4398a678..501b62eb12a 100644
--- a/src/plugins/contracts/web-provider-vitest-registry.ts
+++ b/src/plugins/contracts/web-provider-vitest-registry.ts
@@ -1,4 +1,4 @@
-import { createGeminiWebSearchProvider } from "../../../extensions/google/web-search-contract-api.js";
+import { loadBundledPluginPublicSurfaceSync } from "../../test-utils/bundled-plugin-public-surface.js";
 import type { WebSearchProviderPlugin } from "../types.js";
 
 export type WebSearchProviderContractEntry = {
@@ -9,11 +9,19 @@ export type WebSearchProviderContractEntry = {
 
 let webSearchProviderContractRegistryCache: WebSearchProviderContractEntry[] | null = null;
 
+type GoogleWebSearchContractApiSurface =
+  typeof import("../../../extensions/google/web-search-contract-api.js");
+
 export function loadVitestWebSearchProviderContractRegistry(): WebSearchProviderContractEntry[] {
+  const googleWebSearchContractApi =
+    loadBundledPluginPublicSurfaceSync<GoogleWebSearchContractApiSurface>({
+      pluginId: "google",
+      artifactBasename: "web-search-contract-api.js",
+    });
   webSearchProviderContractRegistryCache ??= [
     {
       pluginId: "google",
-      provider: createGeminiWebSearchProvider(),
+      provider: googleWebSearchContractApi.createGeminiWebSearchProvider(),
       credentialValue: "AIzaSyDUMMY",
     },
   ];