diff --git a/crates/ely_browser_core/src/state.rs b/crates/ely_browser_core/src/state.rs
index 21ccb14..a744695 100644
--- a/crates/ely_browser_core/src/state.rs
+++ b/crates/ely_browser_core/src/state.rs
@@ -181,6 +181,10 @@ impl BrowserCore {
                 self.open_tab(url);
                 self.command_query.clear();
             }
+            CommandIntent::Command(command) if self.submit_named_command(command)? => {
+                self.command_query.clear();
+            }
+            CommandIntent::Command(_) => {}
             CommandIntent::ScopedSearch { scope: CommandScope::Tabs, query } => {
                 if let Some(tab_id) = self.find_tab_match(query) {
                     self.select_tab(&tab_id)?;
@@ -231,6 +235,24 @@ impl BrowserCore {
         Ok(next_tab_id)
     }
 
+    fn submit_named_command(&mut self, command: &str) -> Result<bool, CoreError> {
+        match command.trim().to_ascii_lowercase().as_str() {
+            "new-tab" => {
+                self.open_tab(self.new_tab_url.clone());
+                Ok(true)
+            }
+            "close-tab" => {
+                self.close_active_tab()?;
+                Ok(true)
+            }
+            "favorite" | "toggle-favorite" => {
+                self.toggle_active_tab_favorite()?;
+                Ok(true)
+            }
+            _ => Ok(false),
+        }
+    }
+
     fn active_tab_index(&self) -> Result<usize, CoreError> {
         self.tabs
             .iter()
diff --git a/crates/ely_browser_core/tests/commands.rs b/crates/ely_browser_core/tests/commands.rs
new file mode 100644
index 0000000..68e03e7
--- /dev/null
+++ b/crates/ely_browser_core/tests/commands.rs
@@ -0,0 +1,69 @@
+use std::error::Error;
+
+use ely_browser_core::{BrowserCore, InitialBrowserConfig};
+use ely_domain::{CommandIntent, UrlText};
+
+#[test]
+fn favorite_command_toggles_active_tab() -> Result<(), Box<dyn Error>> {
+    let mut core = BrowserCore::new(InitialBrowserConfig::ely_defaults()?)?;
+
+    core.set_command_query(">favorite");
+    let intent = core.submit_command()?;
+    let snapshot = core.snapshot()?;
+
+    assert_eq!(intent, Some(CommandIntent::Command("favorite".to_string())));
+    assert_eq!(snapshot.favorites.len(), 1);
+    assert_eq!(snapshot.favorites[0].id(), &snapshot.active_tab_id);
+    assert_eq!(snapshot.command_query, "");
+    Ok(())
+}
+
+#[test]
+fn new_tab_command_opens_new_tab() -> Result<(), Box<dyn Error>> {
+    let mut core = BrowserCore::new(InitialBrowserConfig::ely_defaults()?)?;
+
+    core.set_command_query(">new-tab");
+    let intent = core.submit_command()?;
+    let snapshot = core.snapshot()?;
+    let active_tab = core.active_tab()?;
+
+    assert_eq!(intent, Some(CommandIntent::Command("new-tab".to_string())));
+    assert_eq!(snapshot.tabs.len(), 2);
+    assert_eq!(active_tab.url().as_str(), "ely://new-tab");
+    assert_eq!(snapshot.command_query, "");
+    Ok(())
+}
+
+#[test]
+fn close_tab_command_closes_active_tab() -> Result<(), Box<dyn Error>> {
+    let mut core = BrowserCore::new(InitialBrowserConfig::ely_defaults()?)?;
+    let first_tab_id = core.active_tab()?.id().clone();
+    let second_tab_id = core.open_tab(UrlText::parse("https://example.com")?);
+
+    core.set_command_query(">close-tab");
+    let intent = core.submit_command()?;
+    let snapshot = core.snapshot()?;
+
+    assert_eq!(intent, Some(CommandIntent::Command("close-tab".to_string())));
+    assert_eq!(snapshot.tabs.len(), 1);
+    assert_eq!(snapshot.active_tab_id, first_tab_id);
+    assert!(snapshot.tabs.iter().all(|tab| tab.id() != &second_tab_id));
+    assert_eq!(snapshot.command_query, "");
+    Ok(())
+}
+
+#[test]
+fn unknown_command_preserves_query() -> Result<(), Box<dyn Error>> {
+    let mut core = BrowserCore::new(InitialBrowserConfig::ely_defaults()?)?;
+    let active_tab_id = core.active_tab()?.id().clone();
+
+    core.set_command_query(">missing");
+    let intent = core.submit_command()?;
+    let snapshot = core.snapshot()?;
+
+    assert_eq!(intent, Some(CommandIntent::Command("missing".to_string())));
+    assert_eq!(snapshot.tabs.len(), 1);
+    assert_eq!(snapshot.active_tab_id, active_tab_id);
+    assert_eq!(snapshot.command_query, ">missing");
+    Ok(())
+}