diff --git a/src/app/app.ts b/src/app/app.ts
index 476962c..dab6286 100644
--- a/src/app/app.ts
+++ b/src/app/app.ts
@@ -44,6 +44,31 @@ export default class Enclave<P = Page> {
     return this.accounts?.accounts[this.accounts.activeAccount] || null;
   }
 
+  public sendMessage(content: string, channelId: string) {
+    const clientSecretKey = this.getClientSecretKey();
+
+    if (!clientSecretKey) {
+      console.error("Acccount not found");
+      return;
+    }
+
+    const timestamp = Date.now();
+
+    const signature = new TextEncoder().encode(
+      `${timestamp}@${this.server?.hostname}@${content}`,
+    );
+
+    this.server?.websocket?.send({
+      method: "SendMessage",
+      channel_id: channelId,
+      data: {
+        content,
+        timestamp,
+        signature: base58.encode(ed.sign(signature, clientSecretKey)),
+      },
+    });
+  }
+
   public async connectToServer(hostname: string, isSecure: boolean) {
     if (this.server) {
       this.server.disconnect();
diff --git a/src/app/protocol.ts b/src/app/protocol.ts
index 5d51ed8..23c206f 100644
--- a/src/app/protocol.ts
+++ b/src/app/protocol.ts
@@ -6,6 +6,17 @@ export interface ServerMeta {
   channels: Channel[];
 }
 
+export interface MessageData {
+  content: string;
+  timestamp: number;
+  signature: string;
+}
+
+export interface StoredMessage extends MessageData {
+  id: string;
+  author: string;
+}
+
 export type ClientMethod =
   | {
       method: "Initialized";
@@ -30,6 +41,11 @@ export type ServerMethod =
   | {
       method: "Meta";
     }
+  | {
+      method: "SendMessage";
+      channel_id: string;
+      data: MessageData;
+    }
   | {
       method: "Error";
       error: string;
diff --git a/src/components/page/channel/TextChannel.tsx b/src/components/page/channel/TextChannel.tsx
index e57dc4a..b584951 100644
--- a/src/components/page/channel/TextChannel.tsx
+++ b/src/components/page/channel/TextChannel.tsx
@@ -6,5 +6,17 @@ export default function TextChannel({
 }: {
   appRef: React.RefObject<Enclave<ChannelPageProps> | null>;
 }) {
-  return <div>{appRef.current?.page?.channel.name}</div>;
+  const channel = appRef.current?.page?.channel;
+
+  if (!channel) return null;
+
+  return (
+    <div
+      onClick={() => {
+        appRef.current?.sendMessage("Hello, World", channel.id);
+      }}
+    >
+      {channel.name}
+    </div>
+  );
 }