diff --git a/docs/api-reference.md b/docs/api-reference.md
index 68a485e..87dc87b 100644
--- a/docs/api-reference.md
+++ b/docs/api-reference.md
@@ -13,7 +13,14 @@ GET /api/tracks/:trackId is the canonical audio URL.
 
 ## Base URL
 
-Default local server:
+Reference server:
+
+```text
+HTTP: http://mhsgroove.peterino.com:3001
+WS:   ws://mhsgroove.peterino.com:3001
+```
+
+Local development server:
 
 ```text
 HTTP: http://localhost:3001
@@ -738,7 +745,13 @@ Response:
 
 Connect to live channel state.
 
-Example URL:
+Reference server example URL:
+
+```text
+ws://mhsgroove.peterino.com:3001/api/channels/default/ws
+```
+
+Local example URL:
 
 ```text
 ws://localhost:3001/api/channels/default/ws
@@ -1512,4 +1525,3 @@ A working synced frontend only needs:
 7. Queue rendering that accepts sparse `queue` updates.
 
 Everything else is additive.
-
diff --git a/docs/buildme.md b/docs/buildme.md
index 64dcade..a7f74fb 100644
--- a/docs/buildme.md
+++ b/docs/buildme.md
@@ -20,6 +20,10 @@ Use the Blastoise API documented in docs/api-reference.md. The server owns
 channel state and time. The client owns UI, local audio playback, local caching,
 and drift correction.
 
+Reference server for testing:
+- HTTP base URL: http://mhsgroove.peterino.com:3001
+- WebSocket base URL: ws://mhsgroove.peterino.com:3001
+
 Core rule:
 - Always identify tracks by track.id.
 - Always play audio from /api/tracks/:trackId.