diff --git a/kiloclaw/controller/src/config-writer.test.ts b/kiloclaw/controller/src/config-writer.test.ts
index a91ca6000..d7d33b18a 100644
--- a/kiloclaw/controller/src/config-writer.test.ts
+++ b/kiloclaw/controller/src/config-writer.test.ts
@@ -251,6 +251,9 @@ describe('generateBaseConfig', () => {
     expect(config.models.providers.kilocode.headers['X-KiloCode-OrganizationId']).toBe(
       'org_abc123'
     );
+    // baseUrl must be a string (OpenClaw schema requires it); fall back to
+    // the production URL when no KILOCODE_API_BASE_URL override is active.
+    expect(config.models.providers.kilocode.baseUrl).toBe('https://api.kilo.ai/api/gateway/');
     expect(config.models.providers.kilocode.models).toEqual([]);
   });
 
diff --git a/kiloclaw/controller/src/config-writer.ts b/kiloclaw/controller/src/config-writer.ts
index 5b23bd560..f73041ebe 100644
--- a/kiloclaw/controller/src/config-writer.ts
+++ b/kiloclaw/controller/src/config-writer.ts
@@ -187,6 +187,10 @@ export function generateBaseConfig(
     config.models = config.models ?? {};
     config.models.providers = config.models.providers ?? {};
     config.models.providers.kilocode = config.models.providers.kilocode ?? {};
+    // OpenClaw's provider schema requires baseUrl to be a string. Preserve an
+    // existing dev override (KILOCODE_API_BASE_URL), otherwise use the production URL.
+    config.models.providers.kilocode.baseUrl =
+      config.models.providers.kilocode.baseUrl ?? 'https://api.kilo.ai/api/gateway/';
     config.models.providers.kilocode.headers = config.models.providers.kilocode.headers ?? {};
     config.models.providers.kilocode.headers['X-KiloCode-OrganizationId'] =
       env.KILOCODE_ORGANIZATION_ID;