diff --git a/internal/workbench/http.ts b/internal/workbench/http.ts
index c2d00240..cf27bb38 100644
--- a/internal/workbench/http.ts
+++ b/internal/workbench/http.ts
@@ -20,6 +20,7 @@ export function createWorkbenchHttpApp(options: { dispatch: (command: WorkbenchC
           if (url.pathname === "/v1/caserun/cases") return json(200, { ok: true, status: "unavailable", cases: [], count: 0, mode: options.mode ?? "native-test" });
           if (url.pathname === "/v1/hwpod/specs") return json(200, { ok: true, status: "unavailable", specs: [], mode: options.mode ?? "native-test" });
           if (url.pathname === "/v1/hwpod-node-ops") return json(200, { ok: true, status: "unavailable", events: [], groups: [], mode: options.mode ?? "native-test" });
+          if (url.pathname === "/v1/web-performance" && request.method === "POST") return json(202, { ok: true, status: "accepted", persisted: false, mode: options.mode ?? "native-test" });
           if (url.pathname === "/v1/workbench/events" && request.method === "GET") return nativeEventStream(options, url);
           if (url.pathname === "/v1/workbench/sessions" && request.method === "GET") return nativeSessionList(options, url);
           const sessionMatch = /^\/v1\/workbench\/sessions\/([^/]+)(?:\/(messages))?$/u.exec(url.pathname);
diff --git a/internal/workbench/workbench.test.ts b/internal/workbench/workbench.test.ts
index 8a358931..4b0405f4 100644
--- a/internal/workbench/workbench.test.ts
+++ b/internal/workbench/workbench.test.ts
@@ -88,6 +88,9 @@ describe("Workbench native HTTP adapter", () => {
       expect(response.status).toBe(200);
       expect(await response.json()).toMatchObject({ ok: true, status: "unavailable", mode: "native-test" });
     }
+    const performance = await app.fetch(new Request("http://native.test/v1/web-performance", { method: "POST", body: "{}" }));
+    expect(performance.status).toBe(202);
+    expect(await performance.json()).toMatchObject({ ok: true, status: "accepted", persisted: false, mode: "native-test" });
   });
 
   test("L0 CLI observes AgentRun-derived events only through the Kafka SSE route", async () => {