diff --git a/app/api/imgw/[...path]/route.ts b/app/api/imgw/[...path]/route.ts
index 0713e33..9527147 100644
--- a/app/api/imgw/[...path]/route.ts
+++ b/app/api/imgw/[...path]/route.ts
@@ -9,6 +9,7 @@ const ALLOWED_PATHS = new Set([
   "product",
 ]);
 const IMGW_BASE_URL = "https://danepubliczne.imgw.pl/api/data";
+const USER_AGENT = "wtr./1.0 (weather data proxy)";
 
 export async function GET(_: Request, context: { params: Promise<{ path: string[] }> }) {
   const { path } = await context.params;
@@ -24,7 +25,7 @@ export async function GET(_: Request, context: { params: Promise<{ path: string[
   try {
     const response = await fetch(`${IMGW_BASE_URL}/${upstreamPath}`, {
       next: { revalidate: 300 },
-      headers: { Accept: "application/json" },
+      headers: { Accept: "application/json", "User-Agent": USER_AGENT },
     });
     if (!response.ok) {
       return NextResponse.json({ error: "IMGW API jest chwilowo niedostępne." }, { status: response.status });
diff --git a/lib/server-warnings.ts b/lib/server-warnings.ts
index 11eb95d..de3548a 100644
--- a/lib/server-warnings.ts
+++ b/lib/server-warnings.ts
@@ -2,14 +2,18 @@ import { normalizeWarning } from "@/lib/weather-utils";
 import type { RawWarning, WeatherWarning } from "@/types/imgw";
 
 const IMGW_WARNINGS_METEO_URL = "https://danepubliczne.imgw.pl/api/data/warningsmeteo";
+const USER_AGENT = "wtr./1.0 (weather notification worker)";
 
 export async function fetchMeteoWarnings(signal?: AbortSignal): Promise<WeatherWarning[]> {
   const response = await fetch(IMGW_WARNINGS_METEO_URL, {
-    headers: { accept: "application/json" },
+    headers: { accept: "application/json", "user-agent": USER_AGENT },
     next: { revalidate: 300 },
     signal,
   });
-  if (!response.ok) throw new Error("Unable to load IMGW meteorological warnings.");
+  if (!response.ok) {
+    const details = await response.text().catch(() => "");
+    throw new Error(`Unable to load IMGW meteorological warnings: ${response.status}${details ? ` ${details.slice(0, 240)}` : ""}`);
+  }
   const rows = await response.json() as RawWarning[];
   return Array.isArray(rows) ? rows.map((warning, index) => normalizeWarning(warning, "meteo", index)) : [];
 }
diff --git a/scripts/notification-worker.mjs b/scripts/notification-worker.mjs
index f8f6459..0571d62 100644
--- a/scripts/notification-worker.mjs
+++ b/scripts/notification-worker.mjs
@@ -77,6 +77,16 @@ async function callNotificationEndpoint(path) {
   return body;
 }
 
+async function callNotificationEndpointSafely(path) {
+  try {
+    await callNotificationEndpoint(path);
+    return true;
+  } catch (error) {
+    console.error(formatWorkerError(error));
+    return false;
+  }
+}
+
 function formatWorkerError(error) {
   if (error?.cause?.code === "ECONNREFUSED") {
     return [
@@ -91,17 +101,19 @@ function formatWorkerError(error) {
 async function tick() {
   if (isRunningTick) return;
   isRunningTick = true;
+  const now = Date.now();
+  const warningIntervalMs = warningIntervalMinutes * 60_000;
+
   try {
-    const now = Date.now();
-    const warningIntervalMs = warningIntervalMinutes * 60_000;
     if (now - lastWarningCheckAt >= warningIntervalMs) {
       lastWarningCheckAt = now;
-      await callNotificationEndpoint("/api/notifications/check");
+      await callNotificationEndpointSafely("/api/notifications/check");
     }
 
     const warsawTime = getWarsawDateParts();
     if (isAtOrAfterTime(warsawTime.time, morningBriefTime) && lastMorningBriefDate !== warsawTime.dateKey) {
-      await callNotificationEndpoint("/api/notifications/daily-brief");
+      const sentBrief = await callNotificationEndpointSafely("/api/notifications/daily-brief");
+      if (!sentBrief) return;
       lastMorningBriefDate = warsawTime.dateKey;
     }
   } catch (error) {