diff --git a/extensions/qa-lab/src/qa-gateway-config.test.ts b/extensions/qa-lab/src/qa-gateway-config.test.ts
index 1893f220d5f..bd461ca5ffd 100644
--- a/extensions/qa-lab/src/qa-gateway-config.test.ts
+++ b/extensions/qa-lab/src/qa-gateway-config.test.ts
@@ -1,6 +1,17 @@
 import { describe, expect, it } from "vitest";
 import { buildQaGatewayConfig } from "./qa-gateway-config.js";
 
+function getPrimaryModel(value: unknown): string | undefined {
+  if (typeof value === "string") {
+    return value;
+  }
+  if (value && typeof value === "object" && "primary" in value) {
+    const primary = (value as { primary?: unknown }).primary;
+    return typeof primary === "string" ? primary : undefined;
+  }
+  return undefined;
+}
+
 describe("buildQaGatewayConfig", () => {
   it("keeps mock-openai as the default provider lane", () => {
     const cfg = buildQaGatewayConfig({
@@ -12,7 +23,7 @@ describe("buildQaGatewayConfig", () => {
       workspaceDir: "/tmp/qa-workspace",
     });
 
-    expect(cfg.agents?.defaults?.model?.primary).toBe("mock-openai/gpt-5.4");
+    expect(getPrimaryModel(cfg.agents?.defaults?.model)).toBe("mock-openai/gpt-5.4");
     expect(cfg.models?.providers?.["mock-openai"]?.baseUrl).toBe("http://127.0.0.1:44080/v1");
     expect(cfg.plugins?.allow).toEqual(["memory-core", "qa-channel"]);
     expect(cfg.plugins?.entries?.["memory-core"]).toEqual({ enabled: true });
@@ -32,8 +43,8 @@ describe("buildQaGatewayConfig", () => {
       alternateModel: "openai/gpt-5.4",
     });
 
-    expect(cfg.agents?.defaults?.model?.primary).toBe("openai/gpt-5.4");
-    expect(cfg.agents?.list?.[0]?.model?.primary).toBe("openai/gpt-5.4");
+    expect(getPrimaryModel(cfg.agents?.defaults?.model)).toBe("openai/gpt-5.4");
+    expect(getPrimaryModel(cfg.agents?.list?.[0]?.model)).toBe("openai/gpt-5.4");
     expect(cfg.models).toBeUndefined();
     expect(cfg.plugins?.allow).toEqual(["memory-core", "openai", "qa-channel"]);
     expect(cfg.plugins?.entries?.openai).toEqual({ enabled: true });
diff --git a/extensions/qa-lab/src/qa-gateway-config.ts b/extensions/qa-lab/src/qa-gateway-config.ts
index c7717f57b50..90ebd7e8c4f 100644
--- a/extensions/qa-lab/src/qa-gateway-config.ts
+++ b/extensions/qa-lab/src/qa-gateway-config.ts
@@ -1,4 +1,5 @@
 import type { OpenClawConfig } from "openclaw/plugin-sdk/core";
+import type { ModelProviderConfig } from "openclaw/plugin-sdk/provider-model-shared";
 
 const DISABLED_BUNDLED_CHANNELS = Object.freeze({
   bluebubbles: { enabled: false },
@@ -37,6 +38,44 @@ export function buildQaGatewayConfig(params: {
   alternateModel?: string;
   fastMode?: boolean;
 }): OpenClawConfig {
+  const mockProviderBaseUrl = params.providerBaseUrl ?? "http://127.0.0.1:44080/v1";
+  const mockOpenAiProvider: ModelProviderConfig = {
+    baseUrl: mockProviderBaseUrl,
+    apiKey: "test",
+    api: "openai-responses",
+    models: [
+      {
+        id: "gpt-5.4",
+        name: "gpt-5.4",
+        api: "openai-responses",
+        reasoning: false,
+        input: ["text"],
+        cost: {
+          input: 0,
+          output: 0,
+          cacheRead: 0,
+          cacheWrite: 0,
+        },
+        contextWindow: 128_000,
+        maxTokens: 4096,
+      },
+      {
+        id: "gpt-5.4-alt",
+        name: "gpt-5.4-alt",
+        api: "openai-responses",
+        reasoning: false,
+        input: ["text"],
+        cost: {
+          input: 0,
+          output: 0,
+          cacheRead: 0,
+          cacheWrite: 0,
+        },
+        contextWindow: 128_000,
+        maxTokens: 4096,
+      },
+    ],
+  };
   const providerMode = params.providerMode ?? "mock-openai";
   const allowedPlugins =
     providerMode === "live-openai"
@@ -131,43 +170,7 @@ export function buildQaGatewayConfig(params: {
           models: {
             mode: "replace",
             providers: {
-              "mock-openai": {
-                baseUrl: params.providerBaseUrl,
-                apiKey: "test",
-                api: "openai-responses",
-                models: [
-                  {
-                    id: "gpt-5.4",
-                    name: "gpt-5.4",
-                    api: "openai-responses",
-                    reasoning: false,
-                    input: ["text"],
-                    cost: {
-                      input: 0,
-                      output: 0,
-                      cacheRead: 0,
-                      cacheWrite: 0,
-                    },
-                    contextWindow: 128_000,
-                    maxTokens: 4096,
-                  },
-                  {
-                    id: "gpt-5.4-alt",
-                    name: "gpt-5.4-alt",
-                    api: "openai-responses",
-                    reasoning: false,
-                    input: ["text"],
-                    cost: {
-                      input: 0,
-                      output: 0,
-                      cacheRead: 0,
-                      cacheWrite: 0,
-                    },
-                    contextWindow: 128_000,
-                    maxTokens: 4096,
-                  },
-                ],
-              },
+              "mock-openai": mockOpenAiProvider,
             },
           },
         }