diff --git a/internal/dev-entrypoint/cloud-web-routes.mjs b/internal/dev-entrypoint/cloud-web-routes.mjs
index 7e248184..b621a770 100644
--- a/internal/dev-entrypoint/cloud-web-routes.mjs
+++ b/internal/dev-entrypoint/cloud-web-routes.mjs
@@ -8,6 +8,7 @@ const POST_PROXY_ROUTES = new Set([
   "/v1/agent/chat/cancel",
   "/v1/agent/chat/steer",
   "/v1/agent/sessions",
+  "/v1/web-performance",
   "/v1/m3/io",
   "/v1/skills/uploads"
 ]);
@@ -17,7 +18,8 @@ const PUBLIC_PROXY_ROUTES = new Set([
   "POST /auth/logout",
   "POST /v1/agent/chat",
   "POST /v1/agent/chat/cancel",
-  "POST /v1/agent/chat/steer"
+  "POST /v1/agent/chat/steer",
+  "POST /v1/web-performance"
 ]);
 
 export function cloudWebProxyRoutePolicy(method, pathname) {
diff --git a/internal/dev-entrypoint/cloud-web-routes.test.mjs b/internal/dev-entrypoint/cloud-web-routes.test.mjs
index 5566e08e..1aa3614a 100644
--- a/internal/dev-entrypoint/cloud-web-routes.test.mjs
+++ b/internal/dev-entrypoint/cloud-web-routes.test.mjs
@@ -39,6 +39,15 @@ test("cloud web proxies authenticated REST RPC bridge routes", () => {
   });
 });
 
+test("cloud web proxies public WebUI performance telemetry to cloud-api", () => {
+  assert.deepEqual(cloudWebProxyRoutePolicy("POST", "/v1/web-performance"), {
+    proxy: true,
+    authRequired: false,
+    publicRoute: true,
+    routeKey: "POST /v1/web-performance"
+  });
+});
+
 test("cloud web proxies authenticated API key management write routes", () => {
   assert.deepEqual(cloudWebProxyRoutePolicy("POST", "/v1/api-keys"), {
     proxy: true,