Add SSE support for streaming endpoints

x-api/fundamentals/consuming-streaming-data.mdx

@@ -80,6 +80,47 @@ def connect_to_stream(url, bearer_token):
             print(line.decode("utf-8"))
 ```
 
+### Server-Sent Events (SSE)
+
+All streaming endpoints also support [Server-Sent Events (SSE)](https://www.w3.org/TR/2012/WD-eventsource-20120426/). SSE is a standard protocol that enables servers to push data to clients over HTTP, and is natively supported by most browsers and HTTP client libraries.
+
+To use SSE, include the following header when establishing your connection:
+
+```
+Content-Type: text/event-stream
+```
+
+<Tabs>
+  <Tab title="Python">
+```python
+import requests
+
+def connect_to_stream_sse(url, bearer_token):
+    headers = {
+        "Authorization": f"Bearer {bearer_token}",
+        "Content-Type": "text/event-stream"
+    }
+
+    response = requests.get(url, headers=headers, stream=True)
+
+    for line in response.iter_lines():
+        if line:
+            print(line.decode("utf-8"))
+```
+  </Tab>
+  <Tab title="cURL">
+```bash
+curl -X GET "https://api.x.com/2/tweets/search/stream" \
+  -H "Authorization: Bearer $BEARER_TOKEN" \
+  -H "Content-Type: text/event-stream"
+```
+  </Tab>
+</Tabs>
+
+<Note>
+SSE support is currently available on the staging environment only. This will be rolled out to production in a future update.
+</Note>
+
 ---
 
 ## Consuming data