diff --git a/src/config.yml b/src/config.yml
index 5aa584b..9aa7691 100644
--- a/src/config.yml
+++ b/src/config.yml
@@ -18,20 +18,17 @@ services:
     - title: '/Media'
       icon: 'fas fa-photo-film'
       items:
-          - title: 'Jellyfin'
+          - type: jellyfin
             url: 'https://eagle.tuleu.me'
-            type: jellyfin
             keywords: 'cloud storage files'
 
-          - title: 'Sonarr'
+          - type: sonarr
             url: 'http://sonarr.lan'
-            type: sonarr
             api_key: 43f13770f9a0419bbdc3224dae76e886
             keywords: 'shows tracker torrent usenet'
 
-          - title: 'Radarr'
+          - type: radarr
             url: 'http://radarr.lan'
-            type: radarr
             keywords: 'movies tracker torrent usenet'
 
     - title: '/Cloud'
@@ -46,8 +43,7 @@ services:
     - title: '/Infra'
       icon: 'fas fa-network-wired'
       items:
-          - title: 'PiHole'
+          - type: pihole
             url: 'http://pihole.lan/admin'
-            type: 'pihole'
             keywords: 'dns ads blocker internet'
             api_token: a3996b80e3d9cdb86b338396a164a8814e8d6f44d2986261fe573bfea53a75fb
diff --git a/src/lib/components/ServiceCard.svelte b/src/lib/components/ServiceCard.svelte
index 5a84d19..4a192ed 100644
--- a/src/lib/components/ServiceCard.svelte
+++ b/src/lib/components/ServiceCard.svelte
@@ -1,27 +1,19 @@
 <script lang="ts">
-	import type { BrandConfig, ServiceConfig } from '$lib/config';
-	import type { ServiceData } from '$lib/services/service';
+	import type { ServiceConfig } from '$lib/config';
+	import type { ServiceStatus } from '$lib/services/service';
 	import { getServiceComponent } from '$lib/services/services';
 	import Brand from './Brand.svelte';
 
 	export let service: ServiceConfig;
-	export let data: ServiceData;
+	export let status: ServiceStatus | undefined;
+	export let data: Record<string, unknown>;
+
+	console.log(service);
 
 	const component = getServiceComponent(service.type || '');
 
-	function brand(): BrandConfig {
-		if (data?.logo != undefined && service.logo == undefined && service.icon == undefined) {
-			return { logo: data.logo, asmask: service.asmask || false };
-		}
-		return service;
-	}
-
-	function subtitle(): string {
-		return service.subtitle || data.subtitle || '';
-	}
-
 	function computeClasses(): string {
-		switch (data.status) {
+		switch (status) {
 			case 'offline':
 				return 'bg-error-400';
 			case 'online':
@@ -36,16 +28,16 @@
 <a
 	class="min-h-24 flex w-full flex-col overflow-hidden rounded-2xl bg-neutral-600 bg-opacity-30 p-0 transition-all hover:-translate-y-2 focus:-translate-y-2 focus:outline-none"
 	href={service.url}
-	target={service.target || ''}
+	target={service.target || '_blank'}
 >
 	<div class="flex flex-row gap-2 px-6 pt-6">
 		<div class="flex flex h-12 w-12 flex-row text-4xl">
-			<Brand brand={brand()} />
+			<Brand brand={service} />
 		</div>
 		<div class="h-12">
-			<p class="text-lg">{service.title}</p>
+			<p class="text-lg">{service.title || ''}</p>
 			<p class="min-h-12 text-neutral-700 dark:text-neutral-500">
-				{subtitle()}
+				{service.subtitle || ''}
 			</p>
 		</div>
 	</div>
diff --git a/src/lib/components/ServiceGroup.svelte b/src/lib/components/ServiceGroup.svelte
index 4fa9756..d7965c6 100644
--- a/src/lib/components/ServiceGroup.svelte
+++ b/src/lib/components/ServiceGroup.svelte
@@ -1,10 +1,11 @@
 <script lang="ts">
 	import type { ServiceGroupConfig } from '$lib/config';
-	import { layoutDirection } from '$lib/stores/layout';
+	import type { ServiceData } from '$lib/services/service';
+	import { layoutDirection, type LayoutDirection } from '$lib/stores/layout';
 	import ServiceCard from './ServiceCard.svelte';
 
 	export let group: ServiceGroupConfig;
-	export let groupData: Array<unknown>;
+	export let groupData: Array<Partial<ServiceData>>;
 	export let columns: number;
 
 	function renderClasses(columns: number, direction: LayoutDirection): string {
@@ -38,7 +39,7 @@
 
 	<div class="gap-4 {layoutClasses}">
 		{#each group.items as service, i}
-			<ServiceCard {service} data={groupData[i]} />
+			<ServiceCard {service} data={groupData[i]?.data || {}} status={groupData[i].status} />
 		{/each}
 	</div>
 </div>
diff --git a/src/lib/server/config.ts b/src/lib/server/config.ts
index 83d0f75..03c95e7 100644
--- a/src/lib/server/config.ts
+++ b/src/lib/server/config.ts
@@ -12,6 +12,7 @@ import type {
 
 import * as ipRangeCheck from 'ip-range-check';
 import { initializeServiceData } from './serviceDataPolling';
+import { getServiceRecord } from '$lib/services/services';
 
 const requiredService: Required<ServiceConfig> = {
 	title: '',
@@ -86,8 +87,29 @@ function merge<Type extends SPOJO>(a: Type, b: SPOJO): Type {
 	return res;
 }
 
+function injectDefaultServiceConfigs(config: Config) {
+	for (const group of config.services.values()) {
+		for (const service of group.items.values()) {
+			if (!service.type) {
+				continue;
+			}
+			const def = getServiceRecord(service.type).config;
+			for (const [key, value] of Object.entries(def)) {
+				const isUnknownKey = !(key in requiredService);
+				const keyAlreadyDefined = key in service && service[key] != false;
+				if (isUnknownKey || keyAlreadyDefined) {
+					continue;
+				}
+				service[key] = value;
+			}
+		}
+	}
+}
+
 export function mergeConfig(a: Config, b: SPOJO): Config {
-	return merge<Config>(a, b);
+	const res = merge<Config>(a, b);
+	injectDefaultServiceConfigs(res);
+	return res;
 }
 
 const defaultLightConfig: ColorConfig = {};
@@ -184,7 +206,7 @@ export function watchDymamicConfig() {
 	(async () => {
 		try {
 			const watcher = watch(__filepath);
-			// eslint-disable-next-line
+			// eslint-disable-next-line @typescript-eslint/no-unused-vars
 			for await (const event of watcher) {
 				reloadConfig();
 			}
diff --git a/src/lib/server/serviceDataPolling.ts b/src/lib/server/serviceDataPolling.ts
index 3f1b9e7..3b9e807 100644
--- a/src/lib/server/serviceDataPolling.ts
+++ b/src/lib/server/serviceDataPolling.ts
@@ -1,60 +1,17 @@
-import type { Config, ServiceConfig } from '$lib/config';
-import type { AsyncServiceHandler, ServiceData, ServiceHandler } from '$lib/services/service';
-import { getServiceHandler } from '$lib/services/services';
+import type { Config } from '$lib/config';
+import type { ServiceData, ServicePoller } from '$lib/services/service';
+import { getServiceRecord } from '$lib/services/services';
 import { serverConfig } from './config';
 
-export const serviceData: Array<Array<unknown>> = [];
-
-function isPromise(p: any): boolean {
-	return typeof p === 'object' && typeof p.then === 'function';
-}
-
-async function pollGeneric(upstream: ServiceData, url: string): Promise<ServiceData> {
-	upstream.status = undefined;
-	return fetch(url)
-		.then((resp: Response): ServiceData => {
-			upstream.status = resp.ok ? 'online' : 'offline';
-			return upstream;
-		})
-		.catch((error) => {
-			console.warn("could not fetch status for '" + url + "': " + error);
-			upstream.status = 'offline';
-			return upstream;
-		});
-}
-
-function wrapHandler(handler: ServiceHandler): AsyncServiceHandler {
-	return async (config: ServiceConfig): Promise<ServiceData> => {
-		const value = handler(config);
-		if (isPromise(value) === true) {
-			return (value as Promise<ServiceData>)
-				.then((data: ServiceData) => {
-					if (data.status != undefined) {
-						return data;
-					}
-					return pollGeneric(data, config.url);
-				})
-				.catch((error) => {
-					console.warn("could not resolve service '" + config.url + "': " + error);
-					return pollGeneric({}, config.url);
-				});
-		}
-		return pollGeneric(value as ServiceData, config.url);
-	};
-}
+export const serviceData: Array<Array<Partial<ServiceData>>> = [];
 
 function pollServices() {
 	const config: Config = serverConfig();
 
 	for (const [i, group] of config.services.entries()) {
 		for (const [j, service] of group.items.entries()) {
-			const handler: ServiceHandler =
-				getServiceHandler(service.type || '') ||
-				(() => {
-					return {} as ServiceData;
-				});
-
-			wrapHandler(handler)(service).then((data: ServiceData) => {
+			const poller: ServicePoller = getServiceRecord(service.type || '').poll;
+			poller(service).then((data: ServiceData) => {
 				serviceData[i][j] = data;
 			});
 		}
diff --git a/src/lib/services/jellyfin/+service.ts b/src/lib/services/jellyfin/+service.ts
index 12599f4..d8da577 100644
--- a/src/lib/services/jellyfin/+service.ts
+++ b/src/lib/services/jellyfin/+service.ts
@@ -1,8 +1,7 @@
-import type { ServiceHandler } from '../service';
+import type { ServiceConfig } from '$lib/config';
 
-export const handle: ServiceHandler = () => {
-	return {
-		logo: 'https://cdn.rawgit.com/jellyfin/jellyfin-ux/master/branding/SVG/icon-transparent.svg',
-		subtitle: 'Media Server'
-	};
+export const config: Partial<ServiceConfig> = {
+	title: 'Jellyfin',
+	logo: 'https://cdn.rawgit.com/jellyfin/jellyfin-ux/master/branding/SVG/icon-transparent.svg',
+	subtitle: 'Media Server'
 };
diff --git a/src/lib/services/pihole/+content.svelte b/src/lib/services/pihole/+content.svelte
index 3bdf7a4..d2da6d2 100644
--- a/src/lib/services/pihole/+content.svelte
+++ b/src/lib/services/pihole/+content.svelte
@@ -1,16 +1,20 @@
 <script lang="ts">
 	import CircularProgressBar from '$lib/components/CircularProgressBar.svelte';
-	import type { ServiceData } from '../service';
 
-	export let data: ServiceData;
-	$: missingClasses = data.data == undefined ? 'animate-pulse' : '';
+	//eslint-disable-next-line @typescript-eslint/no-explicit-any
+	export let data: Record<string, any>;
+
+	$: missingClasses =
+		'status' in data && 'ads_percentage' in data && 'queries_today' in data && 'clients' in data
+			? ''
+			: 'animate-pulse';
 </script>
 
 <div class="flex flex-row justify-start gap-4 {missingClasses} whitespace-nowrap">
 	<span class="">
-		{#if data.data?.status == 'enabled'}
+		{#if data?.status == 'enabled'}
 			<i class="fa fa-play text-success-400 opacity-70" />
-		{:else if data.data?.status == 'disabled'}
+		{:else if data?.status == 'disabled'}
 			<i class="fa fa-stop text-error-400 opacity-70" />
 		{:else}
 			<i class="fa fa-question" />
@@ -19,13 +23,13 @@
 	</span>
 	<span>
 		<span class="m-0 inline-block h-5 w-5 p-0 align-text-bottom">
-			<CircularProgressBar ratio={(data.data?.ads_percentage || 0) / 100.0} />
+			<CircularProgressBar ratio={(data?.ads_percentage || 0) / 100.0} />
 		</span>
-		{data.data?.ads_percentage?.toFixed(1) || 'N.A.'}%
+		{(data?.ads_percentage || NaN).toFixed(1)}%
 	</span>
 	<span>
 		<i class="fa-solid fa-globe" />
-		{data.data?.queries_today || 'N.A.'}
+		{data?.queries_today || 'N.A.'}
 	</span>
 	<span>
 		<i class="fa fa-dharmachakra" />
diff --git a/src/lib/services/pihole/+service.ts b/src/lib/services/pihole/+service.ts
index c7ff9b7..052df49 100644
--- a/src/lib/services/pihole/+service.ts
+++ b/src/lib/services/pihole/+service.ts
@@ -1,28 +1,29 @@
 import type { ServiceConfig } from '$lib/config';
-import { type ServiceData, type ServiceHandler } from '../service';
+import type { ServicePoller } from '../service';
 
-export const handle: ServiceHandler = async (config: ServiceConfig) => {
-	const res: ServiceData = {
-		logo: 'https://cdn.rawgit.com/pi-hole/graphics/master/Vortex/Vortex.svg',
-		subtitle: 'Sends ads into a black hole'
-	};
+export const config: Partial<ServiceConfig> = {
+	title: 'Pi-hole',
+	logo: 'https://cdn.rawgit.com/pi-hole/graphics/master/Vortex/Vortex.svg',
+	subtitle: 'Sends ads into a black hole'
+};
 
+export const poll: ServicePoller = async (config: ServiceConfig) => {
 	try {
 		const resp: Response = await fetch(
 			config.url + '/api.php?summaryRaw&auth=' + config.api_token
 		);
-		res.status = resp.ok ? 'online' : 'offline';
 		const raw = await resp.json();
-		res.data = {
-			queries_today: raw.dns_queries_today,
-			ads_percentage: raw.ads_percentage_today,
-			status: raw.status,
-			client: raw.unique_clients
+		return {
+			status: resp.ok ? 'online' : 'offline',
+			data: {
+				queries_today: raw.dns_queries_today,
+				ads_percentage: raw.ads_percentage_today,
+				status: raw.status,
+				client: raw.unique_clients
+			}
 		};
 	} catch (error) {
-		res.status = 'offline';
 		console.warn('could not fetch pihole status: ' + error);
+		return { status: 'offline' };
 	}
-
-	return res;
 };
diff --git a/src/lib/services/prowlarr/+service.ts b/src/lib/services/prowlarr/+service.ts
index ebd1f55..6ce6b5f 100644
--- a/src/lib/services/prowlarr/+service.ts
+++ b/src/lib/services/prowlarr/+service.ts
@@ -1,5 +1,7 @@
-import type { ServiceHandler } from '../service';
+import type { ServiceConfig } from '$lib/config';
 
-export const handle: ServiceHandler = () => {
-	return { logo: 'https://cdn.rawgit.com/Prowlarr/Prowlarr/develop/Logo/Prowlarr.svg' };
+export const config: Partial<ServiceConfig> = {
+	title: 'Prowlarr',
+	logo: 'https://cdn.rawgit.com/Prowlarr/Prowlarr/develop/Logo/Prowlarr.svg',
+	subtitle: 'Indexer of indexer'
 };
diff --git a/src/lib/services/radarr/+service.ts b/src/lib/services/radarr/+service.ts
index 3b6a133..f3cca03 100644
--- a/src/lib/services/radarr/+service.ts
+++ b/src/lib/services/radarr/+service.ts
@@ -1,8 +1,7 @@
-import type { ServiceHandler } from '../service';
+import type { ServiceConfig } from '$lib/config';
 
-export const handle: ServiceHandler = () => {
-	return {
-		logo: 'https://cdn.rawgit.com/Radarr/Radarr/develop/Logo/Radarr.svg',
-		subtitle: 'TV Shows Tracker'
-	};
+export const config: Partial<ServiceConfig> = {
+	title: 'Sonarr',
+	logo: 'https://cdn.rawgit.com/Radarr/Radarr/develop/Logo/Radarr.svg',
+	subtitle: 'TV Shows Tracker'
 };
diff --git a/src/lib/services/service.ts b/src/lib/services/service.ts
index 6252423..025a151 100644
--- a/src/lib/services/service.ts
+++ b/src/lib/services/service.ts
@@ -3,10 +3,9 @@ import type { ServiceConfig } from '$lib/config';
 export type ServiceStatus = 'online' | 'offline';
 
 export interface ServiceData {
-	status?: ServiceStatus;
+	status: ServiceStatus;
 
-	[x: string]: unknown;
+	data?: Record<string, unknown>;
 }
 
-export type ServiceHandler = (input: ServiceConfig) => ServiceData | Promise<ServiceData>;
-export type AsyncServiceHandler = (input: ServiceConfig) => Promise<ServiceData>;
+export type ServicePoller = (input: ServiceConfig) => Promise<ServiceData>;
diff --git a/src/lib/services/services.ts b/src/lib/services/services.ts
index ddbac4a..d199450 100644
--- a/src/lib/services/services.ts
+++ b/src/lib/services/services.ts
@@ -1,21 +1,45 @@
-import type { ServiceHandler } from './service';
+import type { ServiceConfig } from '$lib/config';
+import type { ServiceData, ServicePoller } from './service';
 
-const services: Record<string, ServiceHandler> = {};
-
-const components: Record<string, any> = {};
-
-function registerService(type: string, handler: ServiceHandler) {
-	services[type] = handler;
+interface ServiceRecord {
+	poll: ServicePoller;
+	config: Partial<ServiceConfig>;
 }
 
+const services: Record<string, ServiceRecord> = {};
+
+//eslint-disable-next-line @typescript-eslint/no-explicit-any
+const components: Record<string, any> = {};
+
+async function pollURL(config: ServiceConfig): Promise<ServiceData> {
+	try {
+		const resp = await fetch(config.url);
+		return { status: resp.ok ? 'online' : 'offline' };
+	} catch (error) {
+		console.warn(`could not poll '${config.url}': ` + error);
+		return { status: 'offline' };
+	}
+}
+
+function registerService(type: string, service: Partial<ServiceRecord>) {
+	const record: ServiceRecord = {
+		poll: service.poll || pollURL,
+		config: service.config || {}
+	};
+
+	services[type] = record;
+}
+
+//eslint-disable-next-line @typescript-eslint/no-explicit-any
 function registerComponent(type: string, component: any) {
 	components[type] = component;
 }
 
-export function getServiceHandler(type: string): ServiceHandler | undefined {
-	return services[type];
+export function getServiceRecord(type: string): ServiceRecord {
+	return services[type] || { poll: pollURL, config: {} };
 }
 
+//eslint-disable-next-line @typescript-eslint/no-explicit-any
 export function getServiceComponent(type: string): any {
 	return components[type];
 }
@@ -25,12 +49,13 @@ export async function initServices() {
 
 	for (const [modulePath, load] of Object.entries(services)) {
 		try {
-			const { handle } = (await load()) as any;
-			if (handle == undefined) {
-				throw new Error(`${modulePath} does not export 'handle'`);
+			//eslint-disable-next-line @typescript-eslint/no-explicit-any
+			const { poll, config } = (await load()) as any;
+			if (poll == undefined && config == undefined) {
+				throw new Error(`${modulePath} does not export 'poll' or 'config'`);
 			}
 			const typeName = modulePath.slice(18, -12);
-			registerService(typeName, handle);
+			registerService(typeName, { poll, config });
 		} catch (err) {
 			console.error(`Could not load service definition from '${modulePath}': ${err}`);
 		}
@@ -42,6 +67,7 @@ export async function initComponents() {
 
 	for (const [componentPath, load] of Object.entries(services)) {
 		try {
+			//eslint-disable-next-line @typescript-eslint/no-explicit-any
 			const module = (await load()) as any;
 
 			if (module == undefined) {
diff --git a/src/lib/services/sonarr/+content.svelte b/src/lib/services/sonarr/+content.svelte
index b7895de..473d34a 100644
--- a/src/lib/services/sonarr/+content.svelte
+++ b/src/lib/services/sonarr/+content.svelte
@@ -1,8 +1,8 @@
 <script lang="ts">
 	import { humanizeRelativeTime } from '$lib/humanize';
-	import type { ServiceData } from '../service';
 
-	export let data: ServiceData;
+	//eslint-disable-next-line @typescript-eslint/no-explicit-any
+	export let data: Record<string, any>;
 </script>
 
 <div class="flex flex-row justify-start gap-4 whitespace-nowrap">
diff --git a/src/lib/services/sonarr/+service.ts b/src/lib/services/sonarr/+service.ts
index 7f93155..a19fa3e 100644
--- a/src/lib/services/sonarr/+service.ts
+++ b/src/lib/services/sonarr/+service.ts
@@ -1,11 +1,12 @@
 import type { ServiceConfig } from '$lib/config';
-import type { ServiceHandler } from '../service';
+import type { ServicePoller, ServiceStatus } from '../service';
 
 interface Status {
 	warnings: number;
 	errors: number;
 }
 
+//eslint-disable-next-line @typescript-eslint/no-explicit-any
 function buildStatus(statuses: any[]): Status {
 	let warnings = 0;
 	let errors = 0;
@@ -26,6 +27,8 @@ interface Queue {
 	nextDate?: Date;
 	total: number;
 }
+
+//eslint-disable-next-line @typescript-eslint/no-explicit-any
 function recordEstimatedCompletionTime(record: any): number {
 	if (record.estimatedCompletionTime == undefined) {
 		return Infinity;
@@ -33,6 +36,7 @@ function recordEstimatedCompletionTime(record: any): number {
 	return new Date(record.estimatedCompletionTime).getTime();
 }
 
+//eslint-disable-next-line @typescript-eslint/no-explicit-any
 function buildQueue(queue: any): Queue {
 	if (queue?.records?.length === 0) {
 		return { total: 0 };
@@ -51,12 +55,13 @@ function buildQueue(queue: any): Queue {
 	};
 }
 
-export const handle: ServiceHandler = async (config: ServiceConfig) => {
-	const res = {
-		logo: 'https://cdn.rawgit.com/Sonarr/Sonarr/develop/Logo/Sonarr.svg',
-		subtitle: 'TV Show tracker'
-	};
+export const config: Partial<ServiceConfig> = {
+	title: 'Sonarr',
+	logo: 'https://cdn.rawgit.com/Sonarr/Sonarr/develop/Logo/Sonarr.svg',
+	subtitle: 'TV Show tracker'
+};
 
+export const poll: ServicePoller = async (config: ServiceConfig) => {
 	const params = '?apikey=' + config.api_key;
 
 	const requests = [
@@ -65,21 +70,22 @@ export const handle: ServiceHandler = async (config: ServiceConfig) => {
 	];
 
 	const [health, queue] = await Promise.allSettled(requests);
-	res.status = 'online';
+	let status: ServiceStatus = 'online';
+	const data: Record<string, unknown> = {};
 
 	if (health.status != 'fulfilled') {
-		console.warn("Could not fetch '" + config.url + "' status: " + health.value);
-		res.status = 'offline';
+		console.warn("Could not fetch '" + config.url + "' status: " + health.reason);
+		status = 'offline';
 	} else if (health.value.ok == true) {
-		res.health = buildStatus(await health.value.json());
+		data.health = buildStatus(await health.value.json());
 	}
 
 	if (queue.status != 'fulfilled') {
-		console.warn("Could not fetch '" + config.url + "' queue: " + queue.value);
-		res.status = 'offline';
+		console.warn("Could not fetch '" + config.url + "' queue: " + queue.reason);
+		data.status = 'offline';
 	} else if (queue.value.ok == true) {
-		res.queue = buildQueue(await queue.value.json());
+		data.queue = buildQueue(await queue.value.json());
 	}
 
-	return res;
+	return { status, data };
 };
diff --git a/static/config.yml b/static/config.yml
deleted file mode 100644
index de9dbac..0000000
--- a/static/config.yml
+++ /dev/null
@@ -1,14 +0,0 @@
-title: 'Hello World !!'
-subtitle: 'actually, I am a new pilot.'
-
-services:
-  - title: '/Cloud'
-    subtitle: 'Private Cloud Utilities'
-    icon: 'fas fa-cloud'
-    items:
-      - title: 'NAS'
-        subtitle: 'Network Attached Storage'
-        icon: 'fas fa-hard-drive'
-        target: '_blank'
-        url: '/NAS'
-        keywords: 'cloud storage files'