diff --git a/codex-rs/Cargo.lock b/codex-rs/Cargo.lock
index 1b92b5afd0..5c82ba04f1 100644
--- a/codex-rs/Cargo.lock
+++ b/codex-rs/Cargo.lock
@@ -3645,6 +3645,7 @@ dependencies = [
  "codex-app-server-client",
  "codex-app-server-protocol",
  "codex-arg0",
+ "codex-backend-client",
  "codex-chatgpt",
  "codex-cli",
  "codex-cloud-requirements",
diff --git a/codex-rs/backend-client/src/types.rs b/codex-rs/backend-client/src/types.rs
index ca081d57bc..c31f428d08 100644
--- a/codex-rs/backend-client/src/types.rs
+++ b/codex-rs/backend-client/src/types.rs
@@ -49,6 +49,43 @@ impl CodexWorkspaceMessagesResponse {
     }
 }
 
+#[cfg(test)]
+mod workspace_message_tests {
+    use super::*;
+    use pretty_assertions::assert_eq;
+
+    #[test]
+    fn workspace_messages_response_deserializes_headlines_and_announcements() {
+        let response: CodexWorkspaceMessagesResponse = serde_json::from_value(serde_json::json!({
+            "messages": [
+                {
+                    "message_id": "headline-id",
+                    "message_type": "headline",
+                    "message_body": "Headline body"
+                },
+                {
+                    "message_id": "announcement-id",
+                    "message_type": "announcement",
+                    "message_body": "Announcement body"
+                }
+            ]
+        }))
+        .expect("workspace messages response should deserialize");
+
+        let headlines = response
+            .headlines()
+            .map(|message| message.message_id.as_str())
+            .collect::<Vec<_>>();
+        let announcements = response
+            .announcements()
+            .map(|message| message.message_id.as_str())
+            .collect::<Vec<_>>();
+
+        assert_eq!(headlines, vec!["headline-id"]);
+        assert_eq!(announcements, vec!["announcement-id"]);
+    }
+}
+
 /// Hand-rolled models for the Cloud Tasks task-details response.
 /// The generated OpenAPI models are pretty bad. This is a half-step
 /// towards hand-rolling them.
diff --git a/codex-rs/tui/Cargo.toml b/codex-rs/tui/Cargo.toml
index c5538c02ed..2532b12d4b 100644
--- a/codex-rs/tui/Cargo.toml
+++ b/codex-rs/tui/Cargo.toml
@@ -29,6 +29,7 @@ codex-ansi-escape = { workspace = true }
 codex-app-server-client = { workspace = true }
 codex-app-server-protocol = { workspace = true }
 codex-arg0 = { workspace = true }
+codex-backend-client = { workspace = true }
 codex-install-context = { workspace = true }
 codex-chatgpt = { workspace = true }
 codex-cloud-requirements = { workspace = true }
diff --git a/codex-rs/tui/src/lib.rs b/codex-rs/tui/src/lib.rs
index b2e92a19b4..3f4aec7c0c 100644
--- a/codex-rs/tui/src/lib.rs
+++ b/codex-rs/tui/src/lib.rs
@@ -42,6 +42,7 @@ use codex_config::format_config_error_with_source;
 use codex_exec_server::EnvironmentManager;
 use codex_exec_server::EnvironmentManagerArgs;
 use codex_exec_server::ExecServerRuntimePaths;
+use codex_features::Feature;
 use codex_login::AuthConfig;
 use codex_login::default_client::set_default_client_residency_requirement;
 use codex_login::enforce_login_restrictions;
@@ -190,6 +191,7 @@ mod version;
 mod voice;
 mod width;
 mod workspace_command;
+mod workspace_messages;
 #[cfg(target_os = "linux")]
 #[allow(dead_code)]
 mod voice {
@@ -1106,6 +1108,9 @@ async fn run_ratatui_app(
     color_eyre::install()?;
 
     tooltips::announcement::prewarm();
+    if initial_config.features.enabled(Feature::WorkspaceMessages) {
+        workspace_messages::prewarm_workspace_messages(&initial_config);
+    }
 
     // Forward panic reports through tracing so they appear in the UI status
     // line, but do not swallow the default/color-eyre panic handler.
diff --git a/codex-rs/tui/src/workspace_messages.rs b/codex-rs/tui/src/workspace_messages.rs
new file mode 100644
index 0000000000..0d4defb26f
--- /dev/null
+++ b/codex-rs/tui/src/workspace_messages.rs
@@ -0,0 +1,42 @@
+use crate::legacy_core::config::Config;
+use codex_backend_client::Client as BackendClient;
+use codex_backend_client::CodexWorkspaceMessagesResponse;
+use codex_login::AuthManager;
+use std::sync::OnceLock;
+use std::time::Duration;
+use tokio::time::timeout;
+
+const WORKSPACE_MESSAGES_FETCH_TIMEOUT: Duration = Duration::from_millis(1000);
+
+static WORKSPACE_MESSAGES: OnceLock<Option<CodexWorkspaceMessagesResponse>> = OnceLock::new();
+static WORKSPACE_MESSAGES_FETCH_STARTED: OnceLock<()> = OnceLock::new();
+
+pub(crate) fn prewarm_workspace_messages(config: &Config) {
+    if WORKSPACE_MESSAGES_FETCH_STARTED.set(()).is_err() {
+        return;
+    }
+
+    let config = config.clone();
+    tokio::spawn(async move {
+        let messages = timeout(
+            WORKSPACE_MESSAGES_FETCH_TIMEOUT,
+            fetch_workspace_messages(config),
+        )
+        .await
+        .ok()
+        .flatten();
+        let _ = WORKSPACE_MESSAGES.set(messages);
+    });
+}
+
+async fn fetch_workspace_messages(config: Config) -> Option<CodexWorkspaceMessagesResponse> {
+    let auth_manager =
+        AuthManager::shared_from_config(&config, /*enable_codex_api_key_env*/ false).await;
+    let auth = auth_manager.auth().await?;
+    if !auth.uses_codex_backend() {
+        return None;
+    }
+
+    let client = BackendClient::from_auth(config.chatgpt_base_url, &auth).ok()?;
+    client.list_workspace_messages().await.ok()
+}