diff --git a/zrpc/proto/zed.proto b/zrpc/proto/zed.proto
index cbced82e7b..48b481c5f4 100644
--- a/zrpc/proto/zed.proto
+++ b/zrpc/proto/zed.proto
@@ -8,31 +8,29 @@ message Envelope {
     oneof payload {
         Ping ping = 4;
         Pong pong = 5;
-        Auth auth = 6;
-        AuthResponse auth_response = 7;
-        ShareWorktree share_worktree = 8;
-        ShareWorktreeResponse share_worktree_response = 9;
-        OpenWorktree open_worktree = 10;
-        OpenWorktreeResponse open_worktree_response = 11;
-        UpdateWorktree update_worktree = 12;
-        CloseWorktree close_worktree = 13;
-        OpenBuffer open_buffer = 14;
-        OpenBufferResponse open_buffer_response = 15;
-        CloseBuffer close_buffer = 16;
-        UpdateBuffer update_buffer = 17;
-        SaveBuffer save_buffer = 18;
-        BufferSaved buffer_saved = 19;
-        AddPeer add_peer = 20;
-        RemovePeer remove_peer = 21;
-        GetChannels get_channels = 22;
-        GetChannelsResponse get_channels_response = 23;
-        GetUsers get_users = 24;
-        GetUsersResponse get_users_response = 25;
-        JoinChannel join_channel = 26;
-        JoinChannelResponse join_channel_response = 27;
-        LeaveChannel leave_channel = 28;
-        SendChannelMessage send_channel_message = 29;
-        ChannelMessageSent channel_message_sent = 30;
+        ShareWorktree share_worktree = 6;
+        ShareWorktreeResponse share_worktree_response = 7;
+        OpenWorktree open_worktree = 8;
+        OpenWorktreeResponse open_worktree_response = 9;
+        UpdateWorktree update_worktree = 10;
+        CloseWorktree close_worktree = 11;
+        OpenBuffer open_buffer = 12;
+        OpenBufferResponse open_buffer_response = 13;
+        CloseBuffer close_buffer = 14;
+        UpdateBuffer update_buffer = 15;
+        SaveBuffer save_buffer = 16;
+        BufferSaved buffer_saved = 17;
+        AddPeer add_peer = 18;
+        RemovePeer remove_peer = 19;
+        GetChannels get_channels = 20;
+        GetChannelsResponse get_channels_response = 21;
+        GetUsers get_users = 22;
+        GetUsersResponse get_users_response = 23;
+        JoinChannel join_channel = 24;
+        JoinChannelResponse join_channel_response = 25;
+        LeaveChannel leave_channel = 26;
+        SendChannelMessage send_channel_message = 27;
+        ChannelMessageSent channel_message_sent = 28;
     }
 }
 
@@ -46,15 +44,6 @@ message Pong {
     int32 id = 2;
 }
 
-message Auth {
-    int32 user_id = 1;
-    string access_token = 2;
-}
-
-message AuthResponse {
-    bool credentials_valid = 1;
-}
-
 message ShareWorktree {
     Worktree worktree = 1;
 }
diff --git a/zrpc/src/peer.rs b/zrpc/src/peer.rs
index 7048fcd0a1..06d4b01ae0 100644
--- a/zrpc/src/peer.rs
+++ b/zrpc/src/peer.rs
@@ -514,13 +514,7 @@ mod tests {
             smol::spawn(async move { incoming.next().await }).detach();
 
             let err = client
-                .request(
-                    connection_id,
-                    proto::Auth {
-                        user_id: 42,
-                        access_token: "token".to_string(),
-                    },
-                )
+                .request(connection_id, proto::Ping { id: 42 })
                 .await
                 .unwrap_err();
             assert_eq!(err.to_string(), "connection was closed");
diff --git a/zrpc/src/proto.rs b/zrpc/src/proto.rs
index 173e802f00..0bcbfd4d65 100644
--- a/zrpc/src/proto.rs
+++ b/zrpc/src/proto.rs
@@ -126,8 +126,6 @@ macro_rules! entity_messages {
 
 messages!(
     AddPeer,
-    Auth,
-    AuthResponse,
     BufferSaved,
     ChannelMessageSent,
     CloseBuffer,
@@ -148,6 +146,7 @@ messages!(
     RemovePeer,
     SaveBuffer,
     SendChannelMessage,
+    SendChannelMessageResponse,
     ShareWorktree,
     ShareWorktreeResponse,
     UpdateBuffer,
@@ -155,7 +154,6 @@ messages!(
 );
 
 request_messages!(
-    (Auth, AuthResponse),
     (GetChannels, GetChannelsResponse),
     (GetUsers, GetUsersResponse),
     (JoinChannel, JoinChannelResponse),
@@ -164,6 +162,7 @@ request_messages!(
     (Ping, Pong),
     (SaveBuffer, BufferSaved),
     (ShareWorktree, ShareWorktreeResponse),
+    (SendChannelMessage, SendChannelMessageResponse),
 );
 
 entity_messages!(
@@ -259,12 +258,7 @@ mod tests {
     fn test_round_trip_message() {
         smol::block_on(async {
             let stream = test::Channel::new();
-            let message1 = Auth {
-                user_id: 5,
-                access_token: "the-access-token".into(),
-            }
-            .into_envelope(3, None, None);
-
+            let message1 = Ping { id: 5 }.into_envelope(3, None, None);
             let message2 = OpenBuffer {
                 worktree_id: 0,
                 path: "some/path".to_string(),