diff --git a/CHANGELOG.md b/CHANGELOG.md
index e993913632..21178fd88f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,10 +7,15 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+- `WakuRelay.getPeers` method.
+- Use `WakuRelay.getPeers` in web chat app example to disable send button.
+
 ### Changed
 - Enable passing `string`s to `addPeerToAddressBook`.
 - Use `addPeerToAddressBook` in examples and usage doc.
 - Settle on `js-waku` name across the board.
+- **Breaking**: `RelayDefaultTopic` renamed to `DefaultPubsubTopic`.
 
 ## [0.1.0] - 2021-05-12
 
diff --git a/examples/web-chat/src/MessageInput.tsx b/examples/web-chat/src/MessageInput.tsx
index d8a8bfe208..3911bb873b 100644
--- a/examples/web-chat/src/MessageInput.tsx
+++ b/examples/web-chat/src/MessageInput.tsx
@@ -34,11 +34,15 @@ export default function MessageInput(props: Props) {
     }
   };
 
+  // Enable the button if there are relay peers available or the user is sending a command
+  const activeButton =
+    (waku && waku.relay.getPeers().size !== 0) || inputText.startsWith('/');
+
   return (
     <TextComposer
       onKeyDown={keyPressHandler}
       onChange={messageHandler}
-      active={!!waku}
+      active={activeButton}
       onButtonClick={sendMessage}
     >
       <Row align="center">
diff --git a/src/lib/waku_relay/constants.ts b/src/lib/waku_relay/constants.ts
index 9cfee5660c..3733f9b9c7 100644
--- a/src/lib/waku_relay/constants.ts
+++ b/src/lib/waku_relay/constants.ts
@@ -9,7 +9,7 @@ export const RelayCodec = '/vac/waku/relay/2.0.0-beta2';
 /**
  * RelayDefaultTopic is the default gossipsub topic to use for waku relay
  */
-export const RelayDefaultTopic = '/waku/2/default-waku/proto';
+export const DefaultPubsubTopic = '/waku/2/default-waku/proto';
 
 /**
  * RelayGossipFactor affects how many peers we will emit gossip to at each heartbeat.
diff --git a/src/lib/waku_relay/index.spec.ts b/src/lib/waku_relay/index.spec.ts
index cf3265dfb9..843d6a289a 100644
--- a/src/lib/waku_relay/index.spec.ts
+++ b/src/lib/waku_relay/index.spec.ts
@@ -12,7 +12,7 @@ import { delay } from '../delay';
 import { Waku } from '../waku';
 import { WakuMessage } from '../waku_message';
 
-import { RelayCodec, RelayDefaultTopic } from './index';
+import { DefaultPubsubTopic, RelayCodec } from './index';
 
 const log = debug('waku:test');
 
@@ -57,8 +57,8 @@ describe('Waku Relay', () => {
   });
 
   it('Subscribe', async function () {
-    const subscribers1 = waku1.libp2p.pubsub.getSubscribers(RelayDefaultTopic);
-    const subscribers2 = waku2.libp2p.pubsub.getSubscribers(RelayDefaultTopic);
+    const subscribers1 = waku1.libp2p.pubsub.getSubscribers(DefaultPubsubTopic);
+    const subscribers2 = waku2.libp2p.pubsub.getSubscribers(DefaultPubsubTopic);
 
     expect(subscribers1).to.contain(waku2.libp2p.peerId.toB58String());
     expect(subscribers2).to.contain(waku1.libp2p.peerId.toB58String());
@@ -160,7 +160,7 @@ describe('Waku Relay', () => {
       it('nim subscribes to js', async function () {
         const nimPeerId = await nimWaku.getPeerId();
         const subscribers = waku.libp2p.pubsub.getSubscribers(
-          RelayDefaultTopic
+          DefaultPubsubTopic
         );
 
         expect(subscribers).to.contain(nimPeerId.toB58String());
@@ -244,7 +244,7 @@ describe('Waku Relay', () => {
 
         while (subscribers.length === 0) {
           await delay(200);
-          subscribers = waku.libp2p.pubsub.getSubscribers(RelayDefaultTopic);
+          subscribers = waku.libp2p.pubsub.getSubscribers(DefaultPubsubTopic);
         }
 
         const nimPeerId = await nimWaku.getPeerId();
diff --git a/src/lib/waku_relay/index.ts b/src/lib/waku_relay/index.ts
index 2b21a42b3f..951d77648c 100644
--- a/src/lib/waku_relay/index.ts
+++ b/src/lib/waku_relay/index.ts
@@ -19,11 +19,11 @@ import PeerId from 'peer-id';
 import { WakuMessage } from '../waku_message';
 
 import * as constants from './constants';
-import { RelayCodec, RelayDefaultTopic } from './constants';
+import { DefaultPubsubTopic, RelayCodec } from './constants';
 import { getRelayPeers } from './get_relay_peers';
 import { RelayHeartbeat } from './relay_heartbeat';
 
-export { RelayCodec, RelayDefaultTopic };
+export { RelayCodec, DefaultPubsubTopic };
 
 /**
  * See {GossipOptions} from libp2p-gossipsub
@@ -94,7 +94,7 @@ export class WakuRelay extends Gossipsub implements Pubsub {
    * @returns {void}
    */
   public start(): void {
-    this.on(constants.RelayDefaultTopic, (event) => {
+    this.on(constants.DefaultPubsubTopic, (event) => {
       const wakuMsg = WakuMessage.decode(event.data);
       if (this.observers['']) {
         this.observers[''].forEach((callbackFn) => {
@@ -111,7 +111,7 @@ export class WakuRelay extends Gossipsub implements Pubsub {
     });
 
     super.start();
-    super.subscribe(constants.RelayDefaultTopic);
+    super.subscribe(constants.DefaultPubsubTopic);
   }
 
   /**
@@ -122,7 +122,7 @@ export class WakuRelay extends Gossipsub implements Pubsub {
    */
   public async send(message: WakuMessage): Promise<void> {
     const msg = message.encode();
-    await super.publish(constants.RelayDefaultTopic, Buffer.from(msg));
+    await super.publish(constants.DefaultPubsubTopic, Buffer.from(msg));
   }
 
   /**
@@ -152,6 +152,18 @@ export class WakuRelay extends Gossipsub implements Pubsub {
     }
   }
 
+  /**
+   * Return the relay peers we are connected to and we would publish a message to
+   */
+  getPeers(): Set<string> {
+    return getRelayPeers(this, DefaultPubsubTopic, this._options.D, (id) => {
+      // Filter peers we would not publish to
+      return (
+        this.score.score(id) >= this._options.scoreThresholds.publishThreshold
+      );
+    });
+  }
+
   /**
    * Join pubsub topic.
    * This is present to override the behavior of Gossipsub and should not
diff --git a/src/lib/waku_store/history_rpc.ts b/src/lib/waku_store/history_rpc.ts
index 3e3fdb537a..41d057ce8b 100644
--- a/src/lib/waku_store/history_rpc.ts
+++ b/src/lib/waku_store/history_rpc.ts
@@ -3,7 +3,7 @@ import { v4 as uuid } from 'uuid';
 
 import * as proto from '../../proto/waku/v2/store';
 import { DefaultContentTopic } from '../waku_message';
-import { RelayDefaultTopic } from '../waku_relay';
+import { DefaultPubsubTopic } from '../waku_relay';
 
 export class HistoryRPC {
   public constructor(public proto: proto.HistoryRPC) {}
@@ -11,7 +11,7 @@ export class HistoryRPC {
   static createQuery(
     contentTopics: string[] = [DefaultContentTopic],
     cursor?: proto.Index,
-    pubsubTopic: string = RelayDefaultTopic
+    pubsubTopic: string = DefaultPubsubTopic
   ): HistoryRPC {
     const pagingInfo = {
       pageSize: 10,
diff --git a/src/test_utils/nim_waku.ts b/src/test_utils/nim_waku.ts
index bb9040499a..b20d3d5cb6 100644
--- a/src/test_utils/nim_waku.ts
+++ b/src/test_utils/nim_waku.ts
@@ -13,7 +13,7 @@ import { Multiaddr, multiaddr } from 'multiaddr';
 import PeerId from 'peer-id';
 
 import { WakuMessage } from '../lib/waku_message';
-import { RelayDefaultTopic } from '../lib/waku_relay';
+import { DefaultPubsubTopic } from '../lib/waku_relay';
 import * as proto from '../proto/waku/v2/message';
 
 import { existsAsync, mkdirAsync, openAsync } from './async_fs';
@@ -167,7 +167,7 @@ export class NimWaku {
     };
 
     return this.rpcCall<boolean>('post_waku_v2_relay_v1_message', [
-      RelayDefaultTopic,
+      DefaultPubsubTopic,
       rpcMessage,
     ]);
   }
@@ -176,7 +176,7 @@ export class NimWaku {
     this.checkProcess();
 
     return this.rpcCall<proto.WakuMessage[]>('get_waku_v2_relay_v1_messages', [
-      RelayDefaultTopic,
+      DefaultPubsubTopic,
     ]).then((msgs) => msgs.map((protoMsg) => new WakuMessage(protoMsg)));
   }