diff --git a/package.json b/package.json
index b656816..3fd2eeb 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "paperclip-adapter-opencode-k8s",
-  "version": "0.1.26",
+  "version": "0.1.27",
   "description": "Paperclip adapter plugin that runs OpenCode agents as Kubernetes Jobs",
   "license": "MIT",
   "type": "module",
diff --git a/src/server/execute.test.ts b/src/server/execute.test.ts
index 6f2f1e1..8d912c9 100644
--- a/src/server/execute.test.ts
+++ b/src/server/execute.test.ts
@@ -1185,3 +1185,30 @@ describe("ensureAgentDbPvc — unit", () => {
     expect(vi.mocked(getPvc)).toHaveBeenCalledWith(NAMESPACE, `opencode-db-${expectedSlug}`, undefined);
   });
 });
+
+describe("isK8s404", () => {
+  it("recognizes @kubernetes/client-node v1.x ApiException with code=404", async () => {
+    const { isK8s404 } = await import("./execute.js");
+    const err = Object.assign(new Error("not found"), { code: 404 });
+    expect(isK8s404(err)).toBe(true);
+  });
+
+  it("still recognizes legacy errors with statusCode=404", async () => {
+    const { isK8s404 } = await import("./execute.js");
+    const err = Object.assign(new Error("not found"), { statusCode: 404 });
+    expect(isK8s404(err)).toBe(true);
+  });
+
+  it("still recognizes errors with response.statusCode=404", async () => {
+    const { isK8s404 } = await import("./execute.js");
+    const err = Object.assign(new Error("not found"), { response: { statusCode: 404 } });
+    expect(isK8s404(err)).toBe(true);
+  });
+
+  it("returns false for non-404 errors", async () => {
+    const { isK8s404 } = await import("./execute.js");
+    expect(isK8s404(Object.assign(new Error("server error"), { code: 500 }))).toBe(false);
+    expect(isK8s404(new Error("plain error"))).toBe(false);
+    expect(isK8s404(null)).toBe(false);
+  });
+});
diff --git a/src/server/execute.ts b/src/server/execute.ts
index 34d3c16..c428d47 100644
--- a/src/server/execute.ts
+++ b/src/server/execute.ts
@@ -29,6 +29,8 @@ const LOG_EXIT_COMPLETION_GRACE_MS = parseInt(process.env.LOG_EXIT_COMPLETION_GR
 export function isK8s404(err: unknown): boolean {
   if (!(err instanceof Error)) return false;
   const asAny = err as unknown as Record<string, unknown>;
+  // @kubernetes/client-node v1.x ApiException exposes HTTP status as `code`.
+  if (typeof asAny.code === "number" && asAny.code === 404) return true;
   if (typeof asAny.statusCode === "number" && asAny.statusCode === 404) return true;
   const resp = asAny.response as Record<string, unknown> | undefined;
   if (typeof resp?.statusCode === "number" && resp.statusCode === 404) return true;
diff --git a/src/server/k8s-client.ts b/src/server/k8s-client.ts
index 4937920..af29928 100644
--- a/src/server/k8s-client.ts
+++ b/src/server/k8s-client.ts
@@ -178,6 +178,8 @@ export function resetCache(): void {
 function isNotFound(err: unknown): boolean {
   if (!(err instanceof Error)) return false;
   const asAny = err as unknown as Record<string, unknown>;
+  // @kubernetes/client-node v1.x ApiException exposes HTTP status as `code`.
+  if (typeof asAny.code === "number" && asAny.code === 404) return true;
   if (typeof asAny.statusCode === "number" && asAny.statusCode === 404) return true;
   const resp = asAny.response as Record<string, unknown> | undefined;
   return typeof resp?.statusCode === "number" && resp.statusCode === 404;