diff --git a/src/server/api/root.ts b/src/server/api/root.ts
index f76df3cbe..e3731c3aa 100644
--- a/src/server/api/root.ts
+++ b/src/server/api/root.ts
@@ -11,6 +11,7 @@ import { mediaRequestsRouter } from './routers/media-request';
 import { mediaServerRouter } from './routers/media-server';
 import { overseerrRouter } from './routers/overseerr';
 import { usenetRouter } from './routers/usenet/route';
+import { calendarRouter } from './routers/calendar';
 
 /**
  * This is the primary router for your server.
@@ -30,6 +31,7 @@ export const rootRouter = createTRPCRouter({
   mediaServer: mediaServerRouter,
   overseerr: overseerrRouter,
   usenet: usenetRouter,
+  calendar: calendarRouter,
 });
 
 // export type definition of API
diff --git a/src/server/api/routers/calendar.ts b/src/server/api/routers/calendar.ts
new file mode 100644
index 000000000..42761c073
--- /dev/null
+++ b/src/server/api/routers/calendar.ts
@@ -0,0 +1,95 @@
+import axios from 'axios';
+import Consola from 'consola';
+import { z } from 'zod';
+import { getConfig } from '~/tools/config/getConfig';
+import { AppIntegrationType } from '~/types/app';
+import { createTRPCRouter, publicProcedure } from '../trpc';
+
+export const calendarRouter = createTRPCRouter({
+  medias: publicProcedure
+    .input(
+      z.object({
+        configName: z.string(),
+        month: z.number().min(1).max(12),
+        year: z.number().min(1900).max(2300),
+        options: z.object({
+          useSonarrv4: z.boolean().optional().default(false),
+        }),
+      })
+    )
+    .query(async ({ input }) => {
+      const { configName, month, year, options } = input;
+      const config = getConfig(configName);
+
+      const mediaAppIntegrationTypes: AppIntegrationType['type'][] = [
+        'sonarr',
+        'radarr',
+        'readarr',
+        'lidarr',
+      ];
+      const mediaApps = config.apps.filter(
+        (app) => app.integration && mediaAppIntegrationTypes.includes(app.integration.type)
+      );
+
+      const integrationTypeEndpointMap = new Map<AppIntegrationType['type'], string>([
+        ['sonarr', input.options.useSonarrv4 ? '/api/v3/calendar' : '/api/calendar'],
+        ['radarr', '/api/v3/calendar'],
+        ['lidarr', '/api/v1/calendar'],
+        ['readarr', '/api/v1/calendar'],
+      ]);
+
+      const promises = mediaApps.map(async (app) => {
+        const integration = app.integration!;
+        const endpoint = integrationTypeEndpointMap.get(integration.type);
+        if (!endpoint) {
+          return {
+            type: integration.type,
+            items: [],
+            success: false,
+          };
+        }
+
+        // Get the origin URL
+        let { href: origin } = new URL(app.url);
+        if (origin.endsWith('/')) {
+          origin = origin.slice(0, -1);
+        }
+
+        const start = new Date(year, month - 1, 1); // First day of month
+        const end = new Date(year, month, 0); // Last day of month
+
+        const apiKey = integration.properties.find((x) => x.field === 'apiKey')?.value;
+        if (!apiKey) return { type: integration.type, items: [], success: false };
+        return axios
+          .get(
+            `${origin}${endpoint}?apiKey=${apiKey}&end=${end.toISOString()}&start=${start.toISOString()}&includeSeries=true&includeEpisodeFile=true&includeEpisodeImages=true`
+          )
+          .then((x) => ({ type: integration.type, items: x.data as any[], success: true }))
+          .catch((err) => {
+            Consola.error(
+              `failed to process request to app '${integration.type}' (${app.id}): ${err}`
+            );
+            return {
+              type: integration.type,
+              items: [],
+              success: false,
+            };
+          });
+      });
+
+      const medias = await Promise.all(promises);
+
+      const countFailed = medias.filter((x) => !x.success).length;
+      if (countFailed > 0) {
+        Consola.warn(`A total of ${countFailed} apps for the calendar widget failed`);
+      }
+
+      return {
+        tvShows: medias.filter((m) => m.type === 'sonarr').flatMap((m) => m.items),
+        movies: medias.filter((m) => m.type === 'radarr').flatMap((m) => m.items),
+        books: medias.filter((m) => m.type === 'readarr').flatMap((m) => m.items),
+        musics: medias.filter((m) => m.type === 'lidarr').flatMap((m) => m.items),
+        totalCount: medias.reduce((p, c) => p + c.items.length, 0),
+      };
+    }),
+});
diff --git a/src/widgets/calendar/CalendarTile.tsx b/src/widgets/calendar/CalendarTile.tsx
index c776e19d9..de320e212 100644
--- a/src/widgets/calendar/CalendarTile.tsx
+++ b/src/widgets/calendar/CalendarTile.tsx
@@ -1,16 +1,16 @@
 import { useMantineTheme } from '@mantine/core';
 import { Calendar } from '@mantine/dates';
 import { IconCalendarTime } from '@tabler/icons-react';
-import { useQuery } from '@tanstack/react-query';
 import { i18n } from 'next-i18next';
 import { useState } from 'react';
+import { api } from '~/utils/api';
+import { useEditModeStore } from '../../components/Dashboard/Views/useEditModeStore';
 import { useConfigContext } from '../../config/provider';
 import { defineWidget } from '../helper';
 import { IWidget } from '../widgets';
 import { CalendarDay } from './CalendarDay';
 import { getBgColorByDateAndTheme } from './bg-calculator';
 import { MediasType } from './type';
-import { useEditModeStore } from '../../components/Dashboard/Views/useEditModeStore';
 
 const definition = defineWidget({
   id: 'calendar',
@@ -55,22 +55,18 @@ function CalendarTile({ widget }: CalendarTileProps) {
   const [month, setMonth] = useState(new Date());
   const isEditMode = useEditModeStore((x) => x.enabled);
 
-  const { data: medias } = useQuery({
-    queryKey: [
-      'calendar/medias',
-      { month: month.getMonth(), year: month.getFullYear(), v4: widget.properties.useSonarrv4 },
-    ],
-    staleTime: 1000 * 60 * 60 * 5,
-    enabled: isEditMode === false,
-    queryFn: async () =>
-      (await (
-        await fetch(
-          `/api/modules/calendar?year=${month.getFullYear()}&month=${
-            month.getMonth() + 1
-          }&configName=${configName}&widgetId=${widget.id}`
-        )
-      ).json()) as MediasType,
-  });
+  const { data: medias } = api.calendar.medias.useQuery(
+    {
+      configName: configName!,
+      month: month.getMonth() + 1,
+      year: month.getFullYear(),
+      options: { useSonarrv4: widget.properties.useSonarrv4 },
+    },
+    {
+      staleTime: 1000 * 60 * 60 * 5,
+      enabled: isEditMode === false,
+    }
+  );
 
   return (
     <Calendar