diff --git a/src/agents/embedded-agent-runner/run.inherited-auth-owner.test.ts b/src/agents/embedded-agent-runner/run.inherited-auth-owner.test.ts
new file mode 100644
index 000000000000..a250b307bd4b
--- /dev/null
+++ b/src/agents/embedded-agent-runner/run.inherited-auth-owner.test.ts
@@ -0,0 +1,56 @@
+import path from "node:path";
+import { describe, expect, it } from "vitest";
+import type { OpenClawConfig } from "../../config/types.openclaw.js";
+import { listAgentIds } from "../agent-scope-config.js";
+import { makeAttemptResult } from "./run.overflow-compaction.fixture.js";
+import {
+  loadRunOverflowCompactionHarness,
+  mockedAcquireAgentRunPreparedModelRuntime,
+  mockedBuildEmbeddedRunPayloads,
+  mockedRunEmbeddedAttempt,
+  overflowBaseRunParams,
+} from "./run.overflow-compaction.harness.js";
+
+function projectSetupExecutionConfig(source: OpenClawConfig): OpenClawConfig {
+  return {
+    ...source,
+    agents: {
+      ...source.agents,
+      entries: {
+        ...(source.agents?.entries ?? { main: {} }),
+        openclaw: {},
+      },
+    },
+  };
+}
+
+describe("embedded setup inference inherited auth owner", () => {
+  it.each([
+    { name: "a pre-roster config", source: {} },
+    { name: "a sole-agent config", source: { agents: { entries: { main: {} } } } },
+  ] satisfies Array<{ name: string; source: OpenClawConfig }>)(
+    "prepares the explicit main agent from $name",
+    async ({ name, source }) => {
+      const config = projectSetupExecutionConfig(source);
+      expect(listAgentIds(config)).toEqual(["main", "openclaw"]);
+
+      const { runEmbeddedAgent } = await loadRunOverflowCompactionHarness();
+      mockedBuildEmbeddedRunPayloads.mockReturnValue([{ text: "OK" }]);
+      mockedRunEmbeddedAttempt.mockResolvedValueOnce(makeAttemptResult({ assistantTexts: ["OK"] }));
+
+      await runEmbeddedAgent({
+        ...overflowBaseRunParams,
+        agentId: "main",
+        config,
+        runId: `run-setup-inference-owner-${name}`,
+      });
+
+      const preparedInput = mockedAcquireAgentRunPreparedModelRuntime.mock.calls[0]?.[0];
+      expect(preparedInput).toMatchObject({ agentId: "main", config });
+      expect(String(preparedInput?.inheritedAuthDir)).toSatisfy((value: string) =>
+        value.endsWith(path.join("agents", "main", "agent")),
+      );
+      expect(mockedRunEmbeddedAttempt).toHaveBeenCalledOnce();
+    },
+  );
+});
diff --git a/src/commands/onboard-guided.inference.e2e.test.ts b/src/commands/onboard-guided.inference.e2e.test.ts
index d4ab1cba0667..528d1b07d1de 100644
--- a/src/commands/onboard-guided.inference.e2e.test.ts
+++ b/src/commands/onboard-guided.inference.e2e.test.ts
@@ -160,7 +160,9 @@ describe("guided onboarding inference composition", () => {
         }),
       );
       expect(mockOpenAi.requestBodies).toHaveLength(1);
-      expect(JSON.parse(mockOpenAi.requestBodies[0] ?? "{}")).toMatchObject({ model: "gpt-5.6" });
+      expect(JSON.parse(mockOpenAi.requestBodies[0] ?? "{}")).toMatchObject({
+        model: "gpt-5.6-sol",
+      });
       const notes = (prompter.note as ReturnType<typeof vi.fn>).mock.calls;
       const inferenceReadyIndex = notes.findIndex((call) => call[1] === "Inference ready");
       const postInferenceIndex = notes.findIndex(