diff --git a/README.md b/README.md
index 40f041e4..6e689a27 100644
--- a/README.md
+++ b/README.md
@@ -689,6 +689,41 @@ function createPingerClient(options: ClientOptions): PingerClient {
+
+🔗 Client usage supported check
+
+```ts
+import { createClient } from 'graphql-ws';
+
+function supportsGraphQLTransportWS(url: string): Promise {
+ return new Promise((resolve) => {
+ const client = createClient({
+ url,
+ retryAttempts: 0, // fail immediately
+ lazy: false, // connect as soon as the client is created
+ on: {
+ closed: () => resolve(false), // connection rejected, probably not supported
+ connected: () => {
+ resolve(true); // connected = supported
+ client.dispose(); // dispose after check
+ },
+ },
+ });
+ });
+}
+
+const supported = await supportsGraphQLTransportWS(
+ 'ws://some.unknown:4000/enpoint',
+);
+if (supported) {
+ // use graphql-ws
+} else {
+ // fallback (use subscriptions-transport-ws?)
+}
+```
+
+
+
🔗 Client usage in browser