diff --git a/src/lib/blah/connection/chatServer.ts b/src/lib/blah/connection/chatServer.ts
index a4a5fd6..baf3432 100644
--- a/src/lib/blah/connection/chatServer.ts
+++ b/src/lib/blah/connection/chatServer.ts
@@ -52,13 +52,11 @@ export class BlahChatServerConnection {
 		});
 	}
 
-	private async apiCall<P, R>(path: `/${string}`, payload?: P): Promise<R> {
+	private async apiCall<P, R>(method: 'POST' | 'GET', path: `/${string}`, payload?: P): Promise<R> {
 		if (payload && !this.keypair) throw new Error('Must make authorized API call with a keypair');
 
 		let response: Response;
-		if (payload) {
-			response = await this.fetchWithSignedPayload(`${this.endpoint}${path}`, payload);
-		} else {
+		if (method === 'GET') {
 			if (this.keypair) {
 				response = await this.fetchWithAuthHeader(`${this.endpoint}${path}`);
 			} else {
@@ -66,9 +64,11 @@ export class BlahChatServerConnection {
 					headers: BlahChatServerConnection.commonHeaders
 				});
 			}
+		} else {
+			response = await this.fetchWithSignedPayload(`${this.endpoint}${path}`, payload, { method });
 		}
 
-		if (!response.ok) throw BlahError.fromResponse(response);
+		if (!response.ok) throw await BlahError.fromResponse(response);
 		return await response.json();
 	}
 
@@ -82,20 +82,20 @@ export class BlahChatServerConnection {
 			user: this.keypair.id
 		};
 
-		await this.apiCall(`/room/${id}/join`, payload);
+		await this.apiCall('POST', `/room/${id}/admin`, payload);
 	}
 
 	async sendMessage(room: string, message: BlahRichText): Promise<void> {
 		if (!this.keypair) throw new Error('Must send message with a keypair');
 		const payload: BlahMessage = { room, rich_text: message, typ: 'chat' };
-		await this.fetchWithSignedPayload(`/room/${room}/item`, payload);
+		await this.apiCall('POST', `/room/${room}/item`, payload);
 	}
 
 	async fetchRoom(
 		roomId: string
 	): Promise<{ room: BlahRoomInfo; messages: BlahSignedPayload<BlahMessage>[] }> {
 		const [room, messages]: [BlahRoomInfo, [number, BlahSignedPayload<BlahMessage>][]] =
-			await this.apiCall(`/room/${roomId}/item`);
+			await this.apiCall('GET', `/room/${roomId}/item`);
 		return { room, messages: messages.toSorted(([a], [b]) => a - b).map(([, message]) => message) };
 	}
 
diff --git a/src/lib/blah/connection/error.ts b/src/lib/blah/connection/error.ts
index 23e053a..ac7bcb3 100644
--- a/src/lib/blah/connection/error.ts
+++ b/src/lib/blah/connection/error.ts
@@ -1,14 +1,16 @@
 export class BlahError extends Error {
+	statusCode: number;
 	raw: Record<string, unknown>;
 
-	constructor(errRespJson: { message: string } & Record<string, unknown>) {
+	constructor(statusCode: number, errRespJson: { message: string } & Record<string, unknown>) {
 		super(errRespJson.message);
+		this.statusCode = statusCode;
 		this.raw = errRespJson;
 		this.name = 'BlahError';
 	}
 
 	static async fromResponse(response: Response): Promise<BlahError> {
 		const errRespJson = await response.json();
-		return new BlahError(errRespJson);
+		return new BlahError(response.status, errRespJson);
 	}
 }
diff --git a/src/lib/components/RichTextInput.svelte b/src/lib/components/RichTextInput.svelte
index 9e71d6f..90ee199 100644
--- a/src/lib/components/RichTextInput.svelte
+++ b/src/lib/components/RichTextInput.svelte
@@ -5,6 +5,7 @@
 	import { tw } from '$lib/tw';
 
 	export let delta: Delta | null = null;
+	export let plainText: string | undefined = undefined;
 	export let placeholder: string = '';
 
 	let className = '';
@@ -23,7 +24,7 @@
 			<p>{placeholder}</p>
 		</div>
 	{:then Input}
-		<svelte:component this={Input} bind:delta {placeholder}>
+		<svelte:component this={Input} bind:delta bind:plainText {placeholder} on:keydown>
 			<slot />
 		</svelte:component>
 	{/await}
diff --git a/src/lib/components/RichTextInput/ClientInput.svelte b/src/lib/components/RichTextInput/ClientInput.svelte
index 54f6d02..55d25b4 100644
--- a/src/lib/components/RichTextInput/ClientInput.svelte
+++ b/src/lib/components/RichTextInput/ClientInput.svelte
@@ -2,6 +2,7 @@
 	import { Delta, Editor, asRoot, h } from 'typewriter-editor';
 
 	export let delta: Delta = new Delta();
+	export let plainText: string | undefined = undefined;
 	export let placeholder: string = '';
 
 	const editor = new Editor();
@@ -23,12 +24,13 @@
 		render: (attributes, children) => h('s', null, children)
 	});
 
-	delta = editor.getDelta();
 	editor.on('change', () => {
 		delta = editor.getDelta();
+		if (typeof plainText === 'string') plainText = editor.getText();
 	});
 
-	$: editor.setDelta(delta);
+	$: editor.setDelta(delta ?? new Delta());
+	$: if (typeof plainText === 'string' && plainText !== editor.getText()) editor.setText(plainText);
 </script>
 
 <div
@@ -38,6 +40,9 @@
 		? 'true'
 		: undefined}
 	data-weblah-placeholder={placeholder}
+	on:keydown
+	role="textbox"
+	tabindex="0"
 >
 	<slot />
 </div>
diff --git a/src/lib/keystore.ts b/src/lib/keystore.ts
index 821cc5d..9d81dfa 100644
--- a/src/lib/keystore.ts
+++ b/src/lib/keystore.ts
@@ -1,5 +1,10 @@
 import { persisted } from 'svelte-persisted-store';
 import type { EncodedBlahKeyPair } from './blah/crypto';
+import { derived } from 'svelte/store';
 
 export const keyStore = persisted<EncodedBlahKeyPair[]>('weblah-keypairs', []);
 export const currentKeyIndex = persisted<number>('weblah-current-key-index', 0);
+export const currentKeyPair = derived(
+	[keyStore, currentKeyIndex],
+	([keyStore, currentKeyIndex]) => keyStore[currentKeyIndex]
+);
diff --git a/src/routes/(app)/IdentityMenu.svelte b/src/routes/(app)/IdentityMenu.svelte
index b374016..2ba3146 100644
--- a/src/routes/(app)/IdentityMenu.svelte
+++ b/src/routes/(app)/IdentityMenu.svelte
@@ -1,13 +1,13 @@
 <script lang="ts">
 	import * as DropdownMenu from '$lib/components/DropdownMenu';
 	import { AvatarBeam } from 'svelte-boring-avatars';
-	import { keyStore, currentKeyIndex } from '$lib/keystore';
+	import { keyStore, currentKeyIndex, currentKeyPair } from '$lib/keystore';
 	import { BlahKeyPair, generateName } from '$lib/blah/crypto';
 
 	let currentKeyId: string | undefined;
 	let currentKeyName: string | null;
 	$: {
-		currentKeyId = $keyStore[$currentKeyIndex]?.id;
+		currentKeyId = $currentKeyPair?.id;
 		currentKeyName = currentKeyId ? generateName(currentKeyId) : null;
 	}
 
diff --git a/src/routes/(app)/chats/[chatId]/+page.svelte b/src/routes/(app)/chats/[chatId]/+page.svelte
index 67d3def..03948b8 100644
--- a/src/routes/(app)/chats/[chatId]/+page.svelte
+++ b/src/routes/(app)/chats/[chatId]/+page.svelte
@@ -1,13 +1,15 @@
 <script lang="ts">
 	import { page } from '$app/stores';
 	import BgPattern from '$lib/components/BgPattern.svelte';
-	import { createRandomMessage } from '$lib/mock/messages';
 	import { messageFromBlah, type Chat, type Message } from '$lib/types';
-	import { onMount } from 'svelte';
+	import { onDestroy } from 'svelte';
 	import ChatHeader from './ChatHeader.svelte';
 	import ChatHistory from './ChatHistory.svelte';
 	import ChatInput from './ChatInput.svelte';
 	import { BlahChatServerConnection } from '$lib/blah/connection/chatServer';
+	import { currentKeyPair } from '$lib/keystore';
+	import { BlahKeyPair, type EncodedBlahKeyPair } from '$lib/blah/crypto';
+	import { browser } from '$app/environment';
 
 	const roomId = $page.params.chatId;
 
@@ -17,6 +19,19 @@
 		type: 'group'
 	};
 	let messages: Message[] = [];
+	let server: BlahChatServerConnection;
+	let unsubscribe: () => void = () => {};
+
+	async function initConnection(encodedKeyPair?: EncodedBlahKeyPair) {
+		messages = [];
+		const keyPair = encodedKeyPair ? await BlahKeyPair.fromEncoded(encodedKeyPair) : undefined;
+		server = new BlahChatServerConnection('https://blah.oxa.li/api', keyPair);
+		unsubscribe();
+		unsubscribe = server.subscribeRoom(roomId, (message) => {
+			messages = [...messages, messageFromBlah(message)];
+		}).unsubscribe;
+		return server;
+	}
 
 	async function loadChat(server: BlahChatServerConnection) {
 		const { room, messages: blahMessages } = await server.fetchRoom(roomId);
@@ -28,20 +43,15 @@
 		messages = [...blahMessages.map(messageFromBlah), ...messages];
 	}
 
-	onMount(() => {
-		const server = new BlahChatServerConnection('https://blah.oxa.li/api');
-		loadChat(server);
-		const { unsubscribe } = server.subscribeRoom(roomId, (message) => {
-			messages = [...messages, messageFromBlah(message)];
-		});
-		return unsubscribe;
-	});
+	$: if (browser) initConnection($currentKeyPair).then((server) => loadChat(server));
+
+	onDestroy(() => unsubscribe());
 </script>
 
 <div class="flex h-full w-full flex-col justify-stretch">
 	<ChatHeader {chat} outsideUnreadCount={263723} />
 	<BgPattern class="flex-1" pattern="charlieBrown">
-		<ChatHistory {messages} mySenderId={'_send'} />
+		<ChatHistory {messages} mySenderId={$currentKeyPair?.id} />
 	</BgPattern>
-	<ChatInput />
+	<ChatInput {roomId} {server} />
 </div>
diff --git a/src/routes/(app)/chats/[chatId]/ChatInput.svelte b/src/routes/(app)/chats/[chatId]/ChatInput.svelte
index fc24c1b..c34a735 100644
--- a/src/routes/(app)/chats/[chatId]/ChatInput.svelte
+++ b/src/routes/(app)/chats/[chatId]/ChatInput.svelte
@@ -1,12 +1,57 @@
 <script lang="ts">
+	import type { BlahChatServerConnection } from '$lib/blah/connection/chatServer';
+	import { BlahError } from '$lib/blah/connection/error';
 	import Button from '$lib/components/Button.svelte';
 	import RichTextInput from '$lib/components/RichTextInput.svelte';
+	import { deltaToBlahRichText } from '$lib/richText';
 	import type { Delta } from 'typewriter-editor';
 
-	let delta: Delta | null = null;
+	export let roomId: string;
+	export let server: BlahChatServerConnection | undefined;
+
+	let delta: Delta;
+	let plainText: string = '';
+	let form: HTMLFormElement | null = null;
+	let sendDisabled = false;
+
+	function onInputKeydown(event: KeyboardEvent) {
+		console.log(event.key, event.shiftKey, event.isComposing, plainText);
+		if (event.key === 'Enter' && !event.shiftKey && !event.isComposing) {
+			event.preventDefault();
+			form?.requestSubmit();
+		}
+	}
+
+	async function submit() {
+		if (!server || plainText.trim() === '') return;
+		console.log('submit');
+
+		const brt = deltaToBlahRichText(delta);
+		sendDisabled = true;
+		try {
+			await server.sendMessage(roomId, brt);
+		} catch (e) {
+			console.log(e);
+			if (e instanceof BlahError && e.statusCode === 403) {
+				// TODO: Actual error handling
+				await server.joinRoom(roomId);
+				await server.sendMessage(roomId, brt);
+			} else {
+				throw e;
+			}
+		}
+		sendDisabled = false;
+		plainText = '';
+	}
+
+	$: sendDisabled = !!server;
 </script>
 
-<div class="flex items-end gap-2 border-t border-ss-secondary bg-sb-primary p-2 shadow-sm">
+<form
+	class="flex items-end gap-2 border-t border-ss-secondary bg-sb-primary p-2 shadow-sm"
+	bind:this={form}
+	on:submit|preventDefault={submit}
+>
 	<Button class="p-1.5">
 		<svg
 			xmlns="http://www.w3.org/2000/svg"
@@ -24,8 +69,14 @@
 		</svg>
 		<span class="sr-only">Attach</span>
 	</Button>
-	<RichTextInput bind:delta placeholder="Message" class="max-h-40 flex-1" />
-	<Button class="p-1.5" variant="primary">
+	<RichTextInput
+		bind:delta
+		bind:plainText
+		placeholder="Message"
+		class="max-h-40 flex-1"
+		on:keydown={onInputKeydown}
+	/>
+	<Button class="p-1.5" variant="primary" type="submit" disabled={sendDisabled}>
 		<svg
 			xmlns="http://www.w3.org/2000/svg"
 			viewBox="0 0 24 24"
@@ -38,4 +89,4 @@
 		</svg>
 		<span class="sr-only">Send</span>
 	</Button>
-</div>
+</form>