diff --git a/app.vue b/app.vue
index 80429cd..484a466 100644
--- a/app.vue
+++ b/app.vue
@@ -5,4 +5,9 @@
 
 <script setup lang="ts">
 import "~/assets/global.css";
+const event = useRequestEvent();
+const sessionStore = useSessionStore();
+await callOnce("fetch-session", async () => {
+	await sessionStore.fetch(event);
+})
 </script>
diff --git a/components/EventCard.vue b/components/EventCard.vue
index 8992621..d3eaaef 100644
--- a/components/EventCard.vue
+++ b/components/EventCard.vue
@@ -5,7 +5,7 @@
 		<p v-if="event.interested">
 			{{ event.interested }} interested
 		</p>
-		<p v-if="session">
+		<p v-if="sessionStore.account">
 			<button
 				class="interested"
 				:class="{ active: interestedIds.has(event.id) }"
@@ -20,7 +20,7 @@
 			<li v-for="slot in event.slots" :key="slot.id">
 				{{ formatTime(slot.start) }} - {{ formatTime(slot.end) }}
 				<button
-					v-if="session && event.slots.length > 1"
+					v-if="sessionStore.account && event.slots.length > 1"
 					class="interested"
 					:disabled="interestedIds.has(event.id)"
 					:class="{ active: interestedIds.has(event.id) || interestedIds.has(slot.id) }"
@@ -49,9 +49,9 @@ defineProps<{
 }>()
 
 const runtimeConfig = useRuntimeConfig();
-const { data: session, refresh: refreshSession } = await useAccountSession();
-const interestedIds = computed(() => new Set(session.value?.account.interestedIds ?? []));
-const timezone = computed(() => session.value?.account?.timezone ?? runtimeConfig.public.defaultTimezone);
+const sessionStore = useSessionStore();
+const interestedIds = computed(() => new Set(sessionStore.account?.interestedIds ?? []));
+const timezone = computed(() => sessionStore.account?.timezone ?? runtimeConfig.public.defaultTimezone);
 const { data: accounts } = await useAccounts();
 const idToAccount = computed(() => new Map(accounts.value?.map(a => [a.id, a])));
 
@@ -60,7 +60,7 @@ function formatTime(time: string) {
 }
 
 async function toggle(id: string, slotIds?: string[]) {
-	let newIds = [...session.value!.account.interestedIds ?? []];
+	let newIds = [...sessionStore.account!.interestedIds ?? []];
 	if (interestedIds.value.has(id)) {
 		newIds = newIds.filter(newId => newId !== id);
 	} else {
@@ -74,7 +74,7 @@ async function toggle(id: string, slotIds?: string[]) {
 		method: "PATCH",
 		body: { interestedIds: newIds },
 	})
-	await refreshSession();
+	await sessionStore.fetch();
 }
 </script>
 
diff --git a/components/EventsTable.vue b/components/EventsTable.vue
index 937e61a..111f225 100644
--- a/components/EventsTable.vue
+++ b/components/EventsTable.vue
@@ -135,8 +135,8 @@ defineProps<{
 }>();
 
 const schedule = await useSchedule();
-const { data: session } = await useAccountSession();
-const canEditPublic = computed(() => session.value?.account.type === "admin");
+const sessionStore = useSessionStore();
+const canEditPublic = computed(() => sessionStore.account?.type === "admin");
 
 function canEdit(event: ScheduleEvent) {
 	return event.crew || canEditPublic.value;
diff --git a/components/Header.vue b/components/Header.vue
index 28de4eb..aaf6ae2 100644
--- a/components/Header.vue
+++ b/components/Header.vue
@@ -8,18 +8,18 @@
 				<li>
 					<NuxtLink to="/schedule">Schedule</NuxtLink>
 				</li>
-				<li v-if="session?.account?.type === 'admin' || session?.account?.type === 'crew'">
+				<li v-if="sessionStore.account?.type === 'admin' || sessionStore.account?.type === 'crew'">
 					<NuxtLink to="/edit">Edit</NuxtLink>
 				</li>
 			</ul>
 		</nav>
 		<div class="account">
-			<template v-if="session?.account">
-				{{ session.account.name }}
-				(s:{{ session.id }} a:{{ session.account.id }}{{ session.push ? " push" : null }})
-				{{ session.account.type }}
+			<template v-if="sessionStore.account">
+				{{ sessionStore.account.name }}
+				(s:{{ sessionStore.id }} a:{{ sessionStore.account.id }}{{ sessionStore.push ? " push" : null }})
+				{{ sessionStore.account.type }}
 				<NuxtLink to="/account/settings">Settings</NuxtLink>
-				<LogOutButton v-if="session.account.type !== 'anonymous'"/>
+				<LogOutButton v-if="sessionStore.account.type !== 'anonymous'"/>
 			</template>
 			<template v-else>
 				<NuxtLink to="/login">Log In</NuxtLink>
@@ -29,7 +29,7 @@
 </template>
 
 <script lang="ts" setup>
-const { data: session } = await useAccountSession();
+const sessionStore = useSessionStore();
 </script>
 
 <style scoped>
diff --git a/components/LogOutButton.vue b/components/LogOutButton.vue
index a0362fe..f0275ea 100644
--- a/components/LogOutButton.vue
+++ b/components/LogOutButton.vue
@@ -1,19 +1,7 @@
 <template>
-	<button type="button" @click="logOut">Log out</button>
+	<button type="button" @click="sessionStore.logOut">Log out</button>
 </template>
 
 <script setup lang="ts">
-const { refresh: sessionRefresh } = useAccountSession();
-
-async function logOut() {
-	try {
-		await $fetch.raw("/api/auth/session", {
-			method: "DELETE",
-		});
-		await sessionRefresh();
-
-	} catch (err: any) {
-		alert(`Log out failed: ${err.statusCode} ${err.statusMessage}`);
-	}
-}
+const sessionStore = useSessionStore();
 </script>
diff --git a/components/PushNotification.vue b/components/PushNotification.vue
index 93f7005..8f5be57 100644
--- a/components/PushNotification.vue
+++ b/components/PushNotification.vue
@@ -18,15 +18,15 @@
 </template>
 
 <script setup lang="ts">
-const { data: session, refresh: refreshSession } = await useAccountSession();
+const sessionStore = useSessionStore();
 const { supported, subscription, getSubscription, subscribe, unsubscribe } = usePushNotification();
-const subscribed = computed(() => Boolean(subscription.value && session.value?.push))
+const subscribed = computed(() => Boolean(subscription.value && sessionStore.push));
 async function onClick() {
 	if (!subscribed.value)
 		await subscribe();
 	else
 		await unsubscribe();
-	await refreshSession();
+	await sessionStore.fetch();
 }
 
 onMounted(() => {
diff --git a/components/ScheduleTable.vue b/components/ScheduleTable.vue
index d05ba3b..284377a 100644
--- a/components/ScheduleTable.vue
+++ b/components/ScheduleTable.vue
@@ -424,11 +424,11 @@ function removeSlot(eventChanges: ChangeRecord<ScheduleEvent>[], event: Schedule
 	return eventChanges;
 }
 
-const { data: session } = await useAccountSession();
+const sessionStore = useSessionStore();
 const schedule = await useSchedule();
 const runtimeConfig = useRuntimeConfig();
 const timezone = computed(
-	() => session.value?.account?.timezone ?? runtimeConfig.public.defaultTimezone
+	() => sessionStore.account?.timezone ?? runtimeConfig.public.defaultTimezone
 );
 
 type EventSlotChange = { op: "set" | "del", data: EventSlot } ;
diff --git a/components/ShiftScheduleTable.vue b/components/ShiftScheduleTable.vue
index b23143e..27e0919 100644
--- a/components/ShiftScheduleTable.vue
+++ b/components/ShiftScheduleTable.vue
@@ -394,11 +394,11 @@ function removeSlot(eventChanges: ChangeRecord<Shift>[], shift: Shift, shiftSlot
 	return eventChanges;
 }
 
-const { data: session } = await useAccountSession();
+const sessionStore = useSessionStore();
 const schedule = await useSchedule();
 const runtimeConfig = useRuntimeConfig();
 const timezone = computed(
-	() => session.value?.account?.timezone ?? runtimeConfig.public.defaultTimezone
+	() => sessionStore.account?.timezone ?? runtimeConfig.public.defaultTimezone
 );
 
 type ShiftSlotChange = { op: "set" | "del", data: ShiftSlot } ;
diff --git a/components/Timetable.vue b/components/Timetable.vue
index 7fa1a7a..e0853b8 100644
--- a/components/Timetable.vue
+++ b/components/Timetable.vue
@@ -504,10 +504,10 @@ const stretches = computed(() => [
 ])
 
 const runtimeConfig = useRuntimeConfig();
-const { data: session } = await useAccountSession();
+const sessionStore = useSessionStore();
 const debugTimezone = ref<undefined | string>();
 const timezone = computed({
-	get: () => debugTimezone.value ?? session.value?.account?.timezone ?? runtimeConfig.public.defaultTimezone,
+	get: () => debugTimezone.value ?? sessionStore.account?.timezone ?? runtimeConfig.public.defaultTimezone,
 	set: (value: string) => { debugTimezone.value = value },
 });
 
diff --git a/composables/schedule.ts b/composables/schedule.ts
index 2c2b695..813a45c 100644
--- a/composables/schedule.ts
+++ b/composables/schedule.ts
@@ -4,7 +4,7 @@ let source: EventSource | null = null;
 let sourceRefs = 0;
 let sourceSessionId: number | undefined = undefined;
 export const useSchedule = () => {
-	const { data: session } = useAccountSession();
+	const sessionStore = useSessionStore();
 	const requestFetch = useRequestFetch();
 	const asyncData = useAsyncData<Schedule>(
 		'schedule',
@@ -14,8 +14,8 @@ export const useSchedule = () => {
 	const { data: schedule } = asyncData;
 
 	function connect() {
-		console.log("Opening event source sid:", session.value?.id);
-		sourceSessionId = session.value?.id;
+		console.log("Opening event source sid:", sessionStore.id);
+		sourceSessionId = sessionStore.id;
 		source = new EventSource("/api/events");
 		source.addEventListener("message", (message) => {
 			console.log("Message", message.data);
@@ -43,11 +43,11 @@ export const useSchedule = () => {
 		connect();
 	})
 
-	watch(() => session.value?.id, () => {
-		if (sourceSessionId === session.value?.id) {
+	watch(() => sessionStore.id, () => {
+		if (sourceSessionId === sessionStore.id) {
 			return;
 		}
-		sourceSessionId = session.value?.id;
+		sourceSessionId = sessionStore.id;
 		console.log("Session changed, refetching schedule")
 		$fetch("/api/schedule").then(
 			data => { schedule.value = data; },
diff --git a/composables/session.ts b/composables/session.ts
deleted file mode 100644
index d335555..0000000
--- a/composables/session.ts
+++ /dev/null
@@ -1,34 +0,0 @@
-import { appendResponseHeader } from "h3";
-import type { H3Event } from "h3";
-
-const fetchWithCookie = async (url: string, event?: H3Event) => {
-	if (!event) {
-		return $fetch(url);
-	}
-
-	const cookie = useRequestHeader("cookie");
-	const res = await $fetch.raw(url, {
-		headers: cookie ? { cookie } : undefined
-	});
-	for (const cookie of res.headers.getSetCookie()) {
-		appendResponseHeader(event, "set-cookie", cookie);
-	}
-	return res._data;
-}
-
-export const useAccountSession = () => {
-	const event = useRequestEvent();
-	return useAsyncData(
-		"session",
-		async () => await fetchWithCookie("/api/auth/session", event),
-		{
-			transform: (input) => input === undefined ? false as any as null: input,
-			getCachedData(key, nuxtApp, context) {
-				if (context.cause === "refresh:manual")
-					return undefined
-				return nuxtApp.payload.data[key];
-			},
-			dedupe: "defer",
-		}
-	);
-}
diff --git a/middleware/authenticated.ts b/middleware/authenticated.ts
index 5404929..95ddb0a 100644
--- a/middleware/authenticated.ts
+++ b/middleware/authenticated.ts
@@ -1,14 +1,14 @@
 export default defineNuxtRouteMiddleware(async (to, from) => {
-	const { data: session } = await useAccountSession();
+	const sessionStore = useSessionStore();
 
-	if (!session.value) {
+	if (!sessionStore.account) {
 		console.log("Not logged in, redirecting to /login");
 		return navigateTo("/login");
 	}
 
 	if (
 		to.meta.allowedAccountTypes
-		&& !to.meta.allowedAccountTypes.includes(session.value.account.type)
+		&& !to.meta.allowedAccountTypes.includes(sessionStore.account.type)
 	) {
 		throw createError({
 			status: 403,
diff --git a/nuxt.config.ts b/nuxt.config.ts
index e8217af..975d6c7 100644
--- a/nuxt.config.ts
+++ b/nuxt.config.ts
@@ -10,5 +10,8 @@ export default defineNuxtConfig({
 			defaultTimezone: "Europe/Oslo",
 			vapidPublicKey: "",
 		}
-	}
+	},
+	modules: [
+		"@pinia/nuxt",
+	],
 })
diff --git a/package.json b/package.json
index f67252d..36d42c5 100644
--- a/package.json
+++ b/package.json
@@ -10,8 +10,10 @@
 		"postinstall": "nuxt prepare"
 	},
 	"dependencies": {
+		"@pinia/nuxt": "0.11.0",
 		"luxon": "^3.5.0",
 		"nuxt": "^3.17.4",
+		"pinia": "^3.0.2",
 		"vue": "latest",
 		"vue-router": "latest",
 		"web-push": "^3.6.7"
diff --git a/pages/account/settings.vue b/pages/account/settings.vue
index 2da6253..8274b59 100644
--- a/pages/account/settings.vue
+++ b/pages/account/settings.vue
@@ -1,10 +1,10 @@
 <template>
 	<main>
 		<h1>Account Settings</h1>
-		<p v-if="session?.account.type !== 'anonymous'">
-			Name: {{ session?.account.name }}
+		<p v-if="sessionStore.account?.type !== 'anonymous'">
+			Name: {{ sessionStore.account?.name }}
 		</p>
-		<p>Access: {{ session?.account.type }}</p>
+		<p>Access: {{ sessionStore.account?.type }}</p>
 		<form @submit.prevent="changeSettings">
 			<label>
 				Timezone
@@ -34,9 +34,9 @@ definePageMeta({
 	middleware: ["authenticated"],
 });
 
-const { data: session, refresh: sessionRefresh } = await useAccountSession();
+const sessionStore = useSessionStore();
 
-const timezone = ref(session.value?.account.timezone ?? "");
+const timezone = ref(sessionStore.account?.timezone ?? "");
 
 async function changeSettings() {
 	try {
@@ -46,7 +46,7 @@ async function changeSettings() {
 				timezone: timezone.value,
 			}
 		});
-		await sessionRefresh();
+		await sessionStore.fetch();
 	} catch (err: any) {
 		alert(err.data.message);
 	}
@@ -57,7 +57,7 @@ async function deleteAccount() {
 		await $fetch.raw("/api/account", {
 			method: "DELETE",
 		});
-		await sessionRefresh();
+		await sessionStore.fetch();
 		await navigateTo("/");
 
 	} catch (err: any) {
diff --git a/pages/edit.vue b/pages/edit.vue
index 8b82a03..011bd8c 100644
--- a/pages/edit.vue
+++ b/pages/edit.vue
@@ -77,6 +77,7 @@ definePageMeta({
 
 const schedule = await useSchedule();
 const { data: accounts } = await useAccounts();
+const sessionStore = useSessionStore();
 
 const route = useRoute();
 const crewFilter = computed({
@@ -90,14 +91,14 @@ const crewFilter = computed({
 	}),
 });
 const eventSlotFilter = computed(() => {
-	if (crewFilter.value === undefined || !session.value) {
+	if (crewFilter.value === undefined || !sessionStore.account) {
 		return () => true;
 	}
 	const cid = parseInt(crewFilter.value);
 	return (slot: TimeSlot) => slot.assigned?.some(id => id === cid) || false;
 });
 const shiftSlotFilter = computed(() => {
-	if (crewFilter.value === undefined || !session.value) {
+	if (crewFilter.value === undefined || !sessionStore.account) {
 		return () => true;
 	}
 	const cid = parseInt(crewFilter.value);
@@ -126,6 +127,5 @@ const roleFilter = computed({
 	}),
 });
 
-const { data: session } = await useAccountSession();
-const isAdmin = computed(() => session.value?.account.type === "admin")
+const isAdmin = computed(() => sessionStore.account?.type === "admin")
 </script>
diff --git a/pages/index.vue b/pages/index.vue
index 345f7f5..636216a 100644
--- a/pages/index.vue
+++ b/pages/index.vue
@@ -5,13 +5,13 @@
 			<li>
 				<NuxtLink to="/schedule">View Schedule</NuxtLink>
 			</li>
-			<li v-if="session?.account?.type === 'admin' || session?.account?.type === 'crew'">
+			<li v-if="sessionStore.account?.type === 'admin' || sessionStore.account?.type === 'crew'">
 				<NuxtLink to="/edit">Edit Schedule</NuxtLink>
 			</li>
-			<li v-if="session">
+			<li v-if="sessionStore.account">
 				<NuxtLink to="/account/settings">Account Settings</NuxtLink>
 			</li>
-			<li v-if="!session">
+			<li v-if="!sessionStore.account">
 				<NuxtLink to="/login">Log In / Create Account</NuxtLink>
 			</li>
 		</ul>
@@ -19,5 +19,5 @@
 </template>
 
 <script lang="ts" setup>
-const { data: session } = await useAccountSession();
+const sessionStore = useSessionStore();
 </script>
diff --git a/pages/login.vue b/pages/login.vue
index b0ff91f..651d12c 100644
--- a/pages/login.vue
+++ b/pages/login.vue
@@ -25,29 +25,26 @@
 			<button type="button" @click="createAnonymousAccount">Create anonymous account</button>
 		</fieldset>
 		<pre><code>{{ result }}</code></pre>
-		<pre><code>Session: {{ session }}</code></pre>
+		<pre><code>Session: {{ ({ id: sessionStore.id, account: sessionStore.account, push: sessionStore.push }) }}</code></pre>
 	</main>
 </template>
 
 <script lang="ts" setup>
-const { data: session, refresh: sessionRefresh } = await useAccountSession();
+const sessionStore = useSessionStore();
 const { getSubscription, subscribe } = usePushNotification();
 
 const name = ref("");
 const result = ref("")
 async function logIn() {
 	try {
-		const res = await $fetch.raw("/api/auth/login", {
-			method: "POST",
-			body: { name: name.value },
-		});
-		result.value = `Server replied: ${res.status} ${res.statusText}`;
+		result.value = await sessionStore.logIn(name.value);
 		// Resubscribe push notifications if the user was subscribed before.
 		const subscription = await getSubscription();
 		if (subscription) {
 			await subscribe();
 		}
-		await sessionRefresh();
+		// XXX Remove the need for this.
+		await sessionStore.fetch();
 
 	} catch (err: any) {
 		console.log(err);
@@ -67,7 +64,7 @@ async function createAccount() {
 			body: new URLSearchParams({ name: createName.value })
 		});
 		result.value = `Server replied: ${res.status} ${res.statusText}`;
-		await sessionRefresh();
+		await sessionStore.fetch();
 
 	} catch (err: any) {
 		console.log(err);
@@ -84,7 +81,7 @@ async function createAnonymousAccount() {
 			},
 		});
 		result.value = `Server replied: ${res.status} ${res.statusText}`;
-		await sessionRefresh();
+		await sessionStore.fetch();
 
 	} catch (err: any) {
 		console.log(err);
diff --git a/pages/schedule.vue b/pages/schedule.vue
index f7eeea9..17bbfc9 100644
--- a/pages/schedule.vue
+++ b/pages/schedule.vue
@@ -4,7 +4,7 @@
 		<p>
 			Study carefully, we only hold these events once a year.
 		</p>
-		<p v-if="!session">
+		<p v-if="!sessionStore.account">
 			<NuxtLink to="/login">Login</NuxtLink> or <NuxtLink to="/login#create-account">Create an account</NuxtLink>
 			to get notified about updates to the schedule.
 		</p>
@@ -12,7 +12,7 @@
 			Check out your <NuxtLink to="/account/settings">Account Setting</NuxtLink> to set up notifications for changes to schedule.
 		</p>
 		<h2>Schedule</h2>
-		<label v-if="session">
+		<label v-if="sessionStore.account">
 			Filter:
 			<select
 				v-model="filter"
@@ -57,12 +57,12 @@
 <script setup lang="ts">
 import type { ShiftSlot, TimeSlot } from '~/shared/types/schedule';
 
-const { data: session } = await useAccountSession();
+const sessionStore = useSessionStore();
 const { data: accounts } = await useAccounts();
 const schedule = await useSchedule();
 const isCrew = computed(() => (
-	session.value?.account?.type === "crew"
-	|| session.value?.account?.type === "admin"
+	sessionStore.account?.type === "crew"
+	|| sessionStore.account?.type === "admin"
 ));
 
 const route = useRoute();
@@ -78,12 +78,12 @@ const filter = computed({
 });
 
 const eventSlotFilter = computed(() => {
-	if (filter.value === undefined || !session.value) {
+	if (filter.value === undefined || !sessionStore.account) {
 		return () => true;
 	}
-	const aid = session.value?.account?.id;
+	const aid = sessionStore.account?.id;
 	if (filter.value === "my-schedule") {
-		const ids = new Set(session.value?.account?.interestedIds);
+		const ids = new Set(sessionStore.account?.interestedIds);
 		for (const event of schedule.value.events) {
 			if (ids.has(event.id)) {
 				for (const slot of event.slots) {
@@ -103,11 +103,11 @@ const eventSlotFilter = computed(() => {
 	return () => false;
 });
 const shiftSlotFilter = computed(() => {
-	if (filter.value === undefined || !session.value) {
+	if (filter.value === undefined || !sessionStore.account) {
 		return () => true;
 	}
 	if (filter.value === "my-schedule" || filter.value === "assigned") {
-		const aid = session.value?.account?.id;
+		const aid = sessionStore.account?.id;
 		return (slot: ShiftSlot) => slot.assigned?.some(id => id === aid) || false;
 	}
 	if (filter.value.startsWith("crew-")) {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 281268b..884bd87 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -8,12 +8,18 @@ importers:
 
   .:
     dependencies:
+      '@pinia/nuxt':
+        specifier: 0.11.0
+        version: 0.11.0(magicast@0.3.5)(pinia@3.0.2(typescript@5.8.2)(vue@3.5.14(typescript@5.8.2)))
       luxon:
         specifier: ^3.5.0
         version: 3.5.0
       nuxt:
         specifier: ^3.17.4
         version: 3.17.4(@parcel/watcher@2.5.1)(@types/node@22.13.8)(db0@0.3.2)(ioredis@5.6.1)(magicast@0.3.5)(rollup@4.41.0)(terser@5.39.0)(typescript@5.8.2)(vite@6.3.5(@types/node@22.13.8)(jiti@2.4.2)(terser@5.39.0)(yaml@2.7.0))(yaml@2.7.0)
+      pinia:
+        specifier: ^3.0.2
+        version: 3.0.2(typescript@5.8.2)(vue@3.5.14(typescript@5.8.2))
       vue:
         specifier: latest
         version: 3.5.14(typescript@5.8.2)
@@ -633,6 +639,11 @@ packages:
     resolution: {integrity: sha512-dfUnCxiN9H4ap84DvD2ubjw+3vUNpstxa0TneY/Paat8a3R4uQZDLSvWjmznAY/DoahqTHl9V46HF/Zs3F29pg==}
     engines: {node: '>= 10.0.0'}
 
+  '@pinia/nuxt@0.11.0':
+    resolution: {integrity: sha512-QGFlUAkeVAhPCTXacrtNP4ti24sGEleVzmxcTALY9IkS6U5OUox7vmNL1pkqBeW39oSNq/UC5m40ofDEPHB1fg==}
+    peerDependencies:
+      pinia: ^3.0.2
+
   '@pkgjs/parseargs@0.11.0':
     resolution: {integrity: sha512-+1VkjdD0QBLPodGrJUeqarH8VAIvQODIbwh9XpP5Syisf7YoQgsJKPNFoqqLQlu+VQ/tVSshMR6loPMn8U+dPg==}
     engines: {node: '>=14'}
@@ -949,6 +960,9 @@ packages:
   '@vue/devtools-api@6.6.4':
     resolution: {integrity: sha512-sGhTPMuXqZ1rVOk32RylztWkfXTRhuS7vgAKv0zjqk8gbsHkJ7xfFf+jbySxt7tWObEJwyKaHMikV/WGDiQm8g==}
 
+  '@vue/devtools-api@7.7.6':
+    resolution: {integrity: sha512-b2Xx0KvXZObePpXPYHvBRRJLDQn5nhKjXh7vUhMEtWxz1AYNFOVIsh5+HLP8xDGL7sy+Q7hXeUxPHB/KgbtsPw==}
+
   '@vue/devtools-core@7.7.6':
     resolution: {integrity: sha512-ghVX3zjKPtSHu94Xs03giRIeIWlb9M+gvDRVpIZ/cRIxKHdW6HE/sm1PT3rUYS3aV92CazirT93ne+7IOvGUWg==}
     peerDependencies:
@@ -2478,6 +2492,15 @@ packages:
     resolution: {integrity: sha512-M7BAV6Rlcy5u+m6oPhAPFgJTzAioX/6B0DxyvDlo9l8+T3nLKbrczg2WLUyzd45L8RqfUMyGPzekbMvX2Ldkwg==}
     engines: {node: '>=12'}
 
+  pinia@3.0.2:
+    resolution: {integrity: sha512-sH2JK3wNY809JOeiiURUR0wehJ9/gd9qFN2Y828jCbxEzKEmEt0pzCXwqiSTfuRsK9vQsOflSdnbdBOGrhtn+g==}
+    peerDependencies:
+      typescript: '>=4.4.4'
+      vue: ^2.7.0 || ^3.5.11
+    peerDependenciesMeta:
+      typescript:
+        optional: true
+
   pkg-types@1.3.1:
     resolution: {integrity: sha512-/Jm5M4RvtBFVkKWRu2BLUTNP8/M2a+UwuAX+ae4770q1qVGtfjG+WTCupoZixokjmHiry8uI+dlY8KXYV5HVVQ==}
 
@@ -4240,6 +4263,13 @@ snapshots:
       '@parcel/watcher-win32-ia32': 2.5.1
       '@parcel/watcher-win32-x64': 2.5.1
 
+  '@pinia/nuxt@0.11.0(magicast@0.3.5)(pinia@3.0.2(typescript@5.8.2)(vue@3.5.14(typescript@5.8.2)))':
+    dependencies:
+      '@nuxt/kit': 3.17.4(magicast@0.3.5)
+      pinia: 3.0.2(typescript@5.8.2)(vue@3.5.14(typescript@5.8.2))
+    transitivePeerDependencies:
+      - magicast
+
   '@pkgjs/parseargs@0.11.0':
     optional: true
 
@@ -4554,6 +4584,10 @@ snapshots:
 
   '@vue/devtools-api@6.6.4': {}
 
+  '@vue/devtools-api@7.7.6':
+    dependencies:
+      '@vue/devtools-kit': 7.7.6
+
   '@vue/devtools-core@7.7.6(vite@6.3.5(@types/node@22.13.8)(jiti@2.4.2)(terser@5.39.0)(yaml@2.7.0))(vue@3.5.14(typescript@5.8.2))':
     dependencies:
       '@vue/devtools-kit': 7.7.6
@@ -6256,6 +6290,13 @@ snapshots:
 
   picomatch@4.0.2: {}
 
+  pinia@3.0.2(typescript@5.8.2)(vue@3.5.14(typescript@5.8.2)):
+    dependencies:
+      '@vue/devtools-api': 7.7.6
+      vue: 3.5.14(typescript@5.8.2)
+    optionalDependencies:
+      typescript: 5.8.2
+
   pkg-types@1.3.1:
     dependencies:
       confbox: 0.1.8
diff --git a/stores/session.ts b/stores/session.ts
new file mode 100644
index 0000000..cb01564
--- /dev/null
+++ b/stores/session.ts
@@ -0,0 +1,61 @@
+import { appendResponseHeader } from "h3";
+import type { H3Event } from "h3";
+import type { Account } from "~/shared/types/account";
+
+const fetchSessionWithCookie = async (event?: H3Event) => {
+	// Client side
+	if (!event) {
+		return $fetch("/api/auth/session");
+	}
+
+	// Server side
+	const cookie = useRequestHeader("cookie");
+	const res = await $fetch.raw("/api/auth/session", {
+		headers: cookie ? { cookie } : undefined
+	});
+	for (const cookie of res.headers.getSetCookie()) {
+		appendResponseHeader(event, "set-cookie", cookie);
+	}
+	return res._data;
+}
+
+export const useSessionStore = defineStore("session", () => {
+	const state = {
+		account: ref<Account>(),
+		id: ref<number>(),
+		push: ref<boolean>(false),
+	};
+
+	const actions = {
+		async fetch(event?: H3Event) {
+			const session = await fetchSessionWithCookie(event)
+			state.account.value = session?.account;
+			state.id.value = session?.id;
+			state.push.value = session?.push ?? false;
+		},
+		async logIn(name: string) {
+			const res = await $fetch.raw("/api/auth/login", {
+				method: "POST",
+				body: { name },
+			});
+			await actions.fetch();
+			return `/api/auth/login replied: ${res.status} ${res.statusText}`;
+		},
+		async logOut() {
+			try {
+				await $fetch.raw("/api/auth/session", {
+					method: "DELETE",
+				});
+				await actions.fetch();
+
+			} catch (err: any) {
+				alert(`Log out failed: ${err.statusCode} ${err.statusMessage}`);
+			}
+		},
+	};
+
+	return {
+		...state,
+		...actions,
+	};
+});