diff --git a/src/config/model-alias-defaults.test.ts b/src/config/model-alias-defaults.test.ts
index b2599f94f..352608ec9 100644
--- a/src/config/model-alias-defaults.test.ts
+++ b/src/config/model-alias-defaults.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { applyModelAliasDefaults } from "./defaults.js";
+import { applyLoggingDefaults, applyModelAliasDefaults } from "./defaults.js";
 import type { ClawdbotConfig } from "./types.js";
 
 describe("applyModelAliasDefaults", () => {
@@ -74,3 +74,17 @@ describe("applyModelAliasDefaults", () => {
     );
   });
 });
+
+describe("applyLoggingDefaults", () => {
+  it("defaults redactSensitive to tools", () => {
+    const result = applyLoggingDefaults({ logging: {} });
+    expect(result.logging?.redactSensitive).toBe("tools");
+  });
+
+  it("preserves explicit redactSensitive", () => {
+    const result = applyLoggingDefaults({
+      logging: { redactSensitive: "off" },
+    });
+    expect(result.logging?.redactSensitive).toBe("off");
+  });
+});