diff --git a/api/gateway/build.gradle.kts b/api/gateway/build.gradle.kts
index 75a3458..8004acf 100644
--- a/api/gateway/build.gradle.kts
+++ b/api/gateway/build.gradle.kts
@@ -20,7 +20,7 @@ kotlin {
 
     sourceSets {
         commonMain.dependencies {
-            implementation(project(":api:shared"))
+            api(project(":api:shared"))
 
             implementation(libs.kermit)
             implementation(libs.ktor.client.core)
diff --git a/api/gateway/src/commonMain/kotlin/moe/lava/neon/api/gateway/Payloads.kt b/api/gateway/src/commonMain/kotlin/moe/lava/neon/api/gateway/Payloads.kt
index e65fa3b..d6a6bc6 100644
--- a/api/gateway/src/commonMain/kotlin/moe/lava/neon/api/gateway/Payloads.kt
+++ b/api/gateway/src/commonMain/kotlin/moe/lava/neon/api/gateway/Payloads.kt
@@ -3,6 +3,8 @@ package moe.lava.neon.api.gateway
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.json.JsonElement
 import moe.lava.neon.api.ApiConstants
+import moe.lava.neon.api.gateway.content.GuildSerializer
+import moe.lava.neon.api.objects.Guild
 import moe.lava.neon.api.objects.User
 
 sealed interface Payload {
@@ -58,7 +60,8 @@ sealed interface Event {
             NO_AFFINE_USER_IDS,
             DEDUPE_USER_OBJECTS,
             USER_SETTINGS_PROTO,
-            DEBOUNCE_MESSAGE_REACTIONS
+            DEBOUNCE_MESSAGE_REACTIONS,
+            CLIENT_STATE_V2,
         ) },
         // TODO: Client state v2
 //        val clientState: ClientState,
@@ -107,7 +110,7 @@ sealed interface Event {
     data class Ready(
         val v: Int,
         val user: User,
-//        val guilds: List<UnavailableGuild>,
+        val guilds: List<@Serializable(GuildSerializer::class) Guild>,
         val sessionId: String,
         val resumeGatewayUrl: String,
 //        val application: Application,
diff --git a/api/gateway/src/commonMain/kotlin/moe/lava/neon/api/gateway/content/GuildSerializer.kt b/api/gateway/src/commonMain/kotlin/moe/lava/neon/api/gateway/content/GuildSerializer.kt
new file mode 100644
index 0000000..8a24075
--- /dev/null
+++ b/api/gateway/src/commonMain/kotlin/moe/lava/neon/api/gateway/content/GuildSerializer.kt
@@ -0,0 +1,19 @@
+package moe.lava.neon.api.gateway.content
+
+import kotlinx.serialization.DeserializationStrategy
+import kotlinx.serialization.json.JsonContentPolymorphicSerializer
+import kotlinx.serialization.json.JsonElement
+import kotlinx.serialization.json.booleanOrNull
+import kotlinx.serialization.json.jsonObject
+import kotlinx.serialization.json.jsonPrimitive
+import moe.lava.neon.api.objects.Guild
+
+object GuildSerializer : JsonContentPolymorphicSerializer<Guild>(Guild::class) {
+    override fun selectDeserializer(element: JsonElement): DeserializationStrategy<Guild> {
+        return if (element.jsonObject["unavailable"]?.jsonPrimitive?.booleanOrNull == true) {
+            Guild.Unavailable.serializer()
+        } else {
+            Guild.Gateway.serializer()
+        }
+    }
+}
diff --git a/api/rest/build.gradle.kts b/api/rest/build.gradle.kts
index 028e304..9a8e3cf 100644
--- a/api/rest/build.gradle.kts
+++ b/api/rest/build.gradle.kts
@@ -22,7 +22,7 @@ kotlin {
 
     sourceSets {
         commonMain.dependencies {
-            implementation(project(":api:shared"))
+            api(project(":api:shared"))
             implementation(project(":common"))
 
             implementation(libs.kermit)
diff --git a/api/shared/src/commonMain/kotlin/moe/lava/neon/api/ApiConstants.kt b/api/shared/src/commonMain/kotlin/moe/lava/neon/api/ApiConstants.kt
index dbbe8f2..0693766 100644
--- a/api/shared/src/commonMain/kotlin/moe/lava/neon/api/ApiConstants.kt
+++ b/api/shared/src/commonMain/kotlin/moe/lava/neon/api/ApiConstants.kt
@@ -29,6 +29,8 @@ object ApiConstants {
         namingStrategy = JsonNamingStrategy.SnakeCase
         ignoreUnknownKeys = true
         encodeDefaults = true
+        // TODO: Distinguish missing vs null fields
+        explicitNulls = false
     }
 
     val superProps = Base64.encode(json.encodeToString(SuperProperties()).encodeToByteArray())
diff --git a/api/shared/src/commonMain/kotlin/moe/lava/neon/api/objects/Channel.kt b/api/shared/src/commonMain/kotlin/moe/lava/neon/api/objects/Channel.kt
new file mode 100644
index 0000000..92f9934
--- /dev/null
+++ b/api/shared/src/commonMain/kotlin/moe/lava/neon/api/objects/Channel.kt
@@ -0,0 +1,5 @@
+package moe.lava.neon.api.objects
+
+data class Channel(
+    val id: Snowflake,
+)
diff --git a/api/shared/src/commonMain/kotlin/moe/lava/neon/api/objects/Guild.kt b/api/shared/src/commonMain/kotlin/moe/lava/neon/api/objects/Guild.kt
new file mode 100644
index 0000000..eaf73fc
--- /dev/null
+++ b/api/shared/src/commonMain/kotlin/moe/lava/neon/api/objects/Guild.kt
@@ -0,0 +1,145 @@
+package moe.lava.neon.api.objects
+
+import kotlinx.serialization.Serializable
+import kotlin.time.Instant
+
+@Serializable
+sealed class Guild {
+    abstract val id: Snowflake
+    abstract val unavailable: Boolean?
+
+    @Serializable
+    data class Unavailable(
+        override val id: Snowflake,
+        override val unavailable: Boolean?,
+
+        val geoRestricted: Boolean?,
+        val name: String?,
+        val icon: String?,
+    ) : Guild()
+
+    @Serializable
+    data class Available(
+        override val id: Snowflake,
+        override val unavailable: Boolean?,
+
+        val name: String,
+        val icon: String?,
+        val banner: String?,
+        val homeHeader: String?,
+        val splash: String?,
+        val discoverySplash: String?,
+        val ownerId: Snowflake,
+        val applicationId: Snowflake?,
+        val description: String?,
+        val region: String?,
+        val afkChannelId: Snowflake?,
+        val afkTimeout: Int,
+        val widgetEnabled: Boolean?,
+        val widgetChannelId: Snowflake?,
+        val verificationLevel: Int,
+        val defaultMessageNotifications: Int,
+        val explicitContentFilter: Int,
+        val features: List<String>,
+//        val stickers: List<Sticker> = listOf(),
+//        val roles: List<Role> = listOf(),
+//        val emojis: List<Emoji> = listOf(),
+
+        val mfaLevel: Int,
+        val systemChannelId: Snowflake?,
+        val systemChannelFlags: Int,
+        val rulesChannelId: Snowflake?,
+        val publicUpdatesChannelId: Snowflake?,
+        val safetyAlertsChannelId: Snowflake?,
+        val maxPresences: Int?,
+        val maxMembers: Int?,
+        val vanityUrlCode: String?,
+        val premiumTier: Int,
+        val premiumSubscriptionCount: Int?,
+        val preferredLocale: String,
+        val maxVideoChannelUsers: Int?,
+        val maxStageVideoChannelUsers: Int?,
+        val nsfwLevel: Int,
+        val ownerConfiguredContentLevel: Int?,
+        val hubType: Int?,
+        val premiumProgressBarEnabled: Boolean,
+        val latestOnboardingQuestionId: Snowflake?,
+//        val incidents_data: AutomodIncidentsData?,
+//        val premium_features: GuildPremiumFeatures?,
+//        val profile: GuildIdentity?,
+        val approximateMemberCount: Int?,
+        val approximatePresenceCount: Int?,
+    ): Guild()
+
+    @Serializable
+    data class Gateway(
+        override val id: Snowflake,
+        override val unavailable: Boolean?,
+
+        val joinedAt: Instant,
+        val large: Boolean,
+        val geoRestricted: Boolean?,
+        val memberCount: Int,
+//        val members: List<GuildMember>,
+//        val channels: List<Channel>,
+//        val threads: List<Channel>,
+//        val presences: List<Presence>,
+//        val voiceStates: List<VoiceState>,
+//        val activityInstances: List<EmbeddedActivityInstance>,
+//        val stageInstances: List<StageInstance>,
+//        val guildScheduledEvents: List<GuildScheduledEvent>,
+        val dataMode: String,
+        val properties: Available, // Client state v2, this is the below fields
+//        val stickers: List<Sticker>,
+//        val roles: List<Role>,
+//        val emojis: List<Emoji>,
+//        val soundboardSounds: List<SoundboardSound>,
+//        override val premiumSubscriptionCount: Int,
+//
+//        override val id: Snowflake,
+//        override val unavailable: Boolean?,
+//
+//        override val name: String,
+//        override val icon: String?,
+//        override val banner: String?,
+//        override val homeHeader: String?,
+//        override val splash: String?,
+//        override val discoverySplash: String?,
+//        override val ownerId: Snowflake,
+//        override val applicationId: Snowflake?,
+//        override val description: String?,
+//        override val region: String?,
+//        override val afkChannelId: Snowflake?,
+//        override val afkTimeout: Int,
+//        override val widgetEnabled: Boolean?,
+//        override val widgetChannelId: Snowflake?,
+//        override val verificationLevel: Int,
+//        override val defaultMessageNotifications: Int,
+//        override val explicitContentFilter: Int,
+//        override val features: List<String>,
+//
+//        override val mfaLevel: Int,
+//        override val systemChannelId: Snowflake?,
+//        override val systemChannelFlags: Int,
+//        override val rulesChannelId: Snowflake?,
+//        override val publicUpdatesChannelId: Snowflake?,
+//        override val safetyAlertsChannelId: Snowflake?,
+//        override val maxPresences: Int?,
+//        override val maxMembers: Int?,
+//        override val vanityUrlCode: String?,
+//        override val premiumTier: Int,
+//        override val preferredLocale: String,
+//        override val maxVideoChannelUsers: Int?,
+//        override val maxStageVideoChannelUsers: Int?,
+//        override val nsfwLevel: Int,
+//        override val ownerConfiguredContentLevel: Int?,
+//        override val hubType: Int?,
+//        override val premiumProgressBarEnabled: Boolean,
+//        override val latestOnboardingQuestionId: Snowflake?,
+//    //        override val incidents_data: AutomodIncidentsData?
+//    //        override val premium_features: GuildPremiumFeatures?
+//    //        override val profile: GuildIdentity?
+//        override val approximateMemberCount: Int?,
+//        override val approximatePresenceCount: Int?,
+    ) : Guild()
+}
diff --git a/core/build.gradle.kts b/core/build.gradle.kts
index 97f594e..203a5c2 100644
--- a/core/build.gradle.kts
+++ b/core/build.gradle.kts
@@ -26,6 +26,9 @@ kotlin {
             implementation(project(":api:rest"))
             implementation(project(":common"))
 
+            implementation(libs.kotlinx.coroutines.core)
+            implementation(libs.kotlinx.serialization.core)
+
             implementation(project.dependencies.platform(libs.koin.bom))
             implementation(libs.koin.core)
 
diff --git a/core/src/commonMain/kotlin/moe/lava/neon/core/data/guild/GuildGatewayDataSource.kt b/core/src/commonMain/kotlin/moe/lava/neon/core/data/guild/GuildGatewayDataSource.kt
new file mode 100644
index 0000000..f6af649
--- /dev/null
+++ b/core/src/commonMain/kotlin/moe/lava/neon/core/data/guild/GuildGatewayDataSource.kt
@@ -0,0 +1,28 @@
+package moe.lava.neon.core.data.guild
+
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.flow.asFlow
+import kotlinx.coroutines.flow.filterIsInstance
+import kotlinx.coroutines.flow.flatMapConcat
+import kotlinx.coroutines.flow.map
+import moe.lava.neon.api.gateway.Event
+import moe.lava.neon.api.gateway.GatewayHandler
+import moe.lava.neon.core.model.Guild
+import moe.lava.neon.api.objects.Guild as ApiGuild
+
+class GuildGatewayDataSource(
+    gateway: GatewayHandler,
+) {
+    @OptIn(ExperimentalCoroutinesApi::class)
+    val flow = gateway.events
+        .filterIsInstance<Event.Ready>()
+        .flatMapConcat { it.guilds.asFlow() }
+        .filterIsInstance<ApiGuild.Gateway>()
+        .map { apiGuild ->
+            Guild(
+                id = apiGuild.id,
+                name = apiGuild.properties.name,
+                iconHash = apiGuild.properties.icon,
+            )
+        }
+}
diff --git a/core/src/commonMain/kotlin/moe/lava/neon/core/di/CoreModule.kt b/core/src/commonMain/kotlin/moe/lava/neon/core/di/CoreModule.kt
index 600b7f2..495281e 100644
--- a/core/src/commonMain/kotlin/moe/lava/neon/core/di/CoreModule.kt
+++ b/core/src/commonMain/kotlin/moe/lava/neon/core/di/CoreModule.kt
@@ -3,21 +3,27 @@ package moe.lava.neon.core.di
 import moe.lava.neon.api.ApiClient
 import moe.lava.neon.api.gateway.GatewayHandler
 import moe.lava.neon.core.AppSettings
+import moe.lava.neon.core.data.guild.GuildGatewayDataSource
 import moe.lava.neon.core.repository.AuthRepository
 import moe.lava.neon.core.repository.CaptchaRepository
 import moe.lava.neon.core.repository.GatewayRepository
+import moe.lava.neon.core.repository.GuildRepository
 import moe.lava.neon.core.repository.UserRepository
+import org.koin.core.module.dsl.createdAtStart
+import org.koin.core.module.dsl.withOptions
 import org.koin.dsl.module
 import org.koin.plugin.module.dsl.single
 
 val coreModule = module {
     factory { ApiClient() }
     single<AppSettings>()
+    single<GatewayHandler>()
+
+    single<GuildGatewayDataSource>()
 
     single<AuthRepository>()
     single<CaptchaRepository>()
     single<GatewayRepository>()
+    single<GuildRepository>() withOptions { createdAtStart() }
     single<UserRepository>()
-
-    single<GatewayHandler>()
 }
diff --git a/core/src/commonMain/kotlin/moe/lava/neon/core/model/Guild.kt b/core/src/commonMain/kotlin/moe/lava/neon/core/model/Guild.kt
new file mode 100644
index 0000000..c4e9d16
--- /dev/null
+++ b/core/src/commonMain/kotlin/moe/lava/neon/core/model/Guild.kt
@@ -0,0 +1,16 @@
+package moe.lava.neon.core.model
+
+import kotlinx.serialization.Serializable
+import moe.lava.neon.api.objects.Snowflake
+
+@Serializable
+data class Guild(
+    val id: Snowflake,
+    val name: String,
+    val iconHash: String?,
+)
+
+@Serializable
+data class UnavailableGuild(val e: String)
+
+
diff --git a/core/src/commonMain/kotlin/moe/lava/neon/core/repository/GuildRepository.kt b/core/src/commonMain/kotlin/moe/lava/neon/core/repository/GuildRepository.kt
new file mode 100644
index 0000000..81427de
--- /dev/null
+++ b/core/src/commonMain/kotlin/moe/lava/neon/core/repository/GuildRepository.kt
@@ -0,0 +1,28 @@
+package moe.lava.neon.core.repository
+
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
+import moe.lava.neon.api.objects.Snowflake
+import moe.lava.neon.core.data.guild.GuildGatewayDataSource
+import moe.lava.neon.core.model.Guild
+
+class GuildRepository(
+    gatewaySource: GuildGatewayDataSource,
+) {
+    init {
+        gatewaySource.flow
+            .onEach { guild ->
+                cache[guild.id] = guild
+                joined[guild.id] = guild
+            }
+            .launchIn(CoroutineScope(Dispatchers.IO))
+    }
+
+    private val cache = mutableMapOf<Snowflake, Guild>()
+    private val joined = mutableMapOf<Snowflake, Guild>()
+
+    fun get(id: Snowflake) = cache[id]
+    fun getJoined() = joined.toMap()
+}
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 189f3c9..dd03d3c 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -70,6 +70,7 @@ kotest-property = { module = "io.kotest:kotest-property", version.ref = "kotest"
 kotest-runner-junit5 = { module = "io.kotest:kotest-runner-junit5", version.ref = "kotest" }
 kotlin-test = { module = "org.jetbrains.kotlin:kotlin-test", version.ref = "kotlin" }
 kotlin-test-junit = { module = "org.jetbrains.kotlin:kotlin-test-junit", version.ref = "kotlin" }
+kotlinx-coroutines-core = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-core", version.ref = "kotlinx-coroutines" }
 kotlinx-coroutines-swing = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-swing", version.ref = "kotlinx-coroutines" }
 kotlinx-serialization-core = { module = "org.jetbrains.kotlinx:kotlinx-serialization-core", version.ref = "kotlinx-serialization" }
 kotlinx-serialization-json = { module = "org.jetbrains.kotlinx:kotlinx-serialization-json", version.ref = "kotlinx-serialization" }
diff --git a/ui/src/commonMain/kotlin/moe/lava/neon/ui/screens/Sample.kt b/ui/src/commonMain/kotlin/moe/lava/neon/ui/screens/Sample.kt
index 73467fc..f5afb3e 100644
--- a/ui/src/commonMain/kotlin/moe/lava/neon/ui/screens/Sample.kt
+++ b/ui/src/commonMain/kotlin/moe/lava/neon/ui/screens/Sample.kt
@@ -11,13 +11,17 @@ import androidx.compose.material3.Button
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleEventObserver
 import androidx.lifecycle.ViewModel
+import androidx.lifecycle.compose.LocalLifecycleOwner
 import androidx.lifecycle.viewModelScope
 import co.touchlab.kermit.Logger
 import kotlinx.coroutines.launch
@@ -34,6 +38,32 @@ fun Sample(
     onRequestLogout: () -> Unit,
 ) {
     val viewModel: SampleViewModel = koinViewModel()
+
+    val li = LocalLifecycleOwner.current
+    DisposableEffect(li) {
+        val observer = LifecycleEventObserver { _, event ->
+            when (event) {
+                Lifecycle.Event.ON_PAUSE -> {
+                    viewModel.disconnect()
+                }
+
+                Lifecycle.Event.ON_RESUME -> {
+                    viewModel.connect()
+                }
+
+                Lifecycle.Event.ON_DESTROY -> {
+                    viewModel.disconnect()
+                }
+
+                else -> {}
+            }
+        }
+        li.lifecycle.addObserver(observer)
+        onDispose {
+            li.lifecycle.removeObserver(observer)
+        }
+    }
+
     var showContent by remember { mutableStateOf(false) }
     Column(
         modifier = Modifier