diff --git a/crates/tui/src/core/engine/tests.rs b/crates/tui/src/core/engine/tests.rs
index 4ef41314..59d30617 100644
--- a/crates/tui/src/core/engine/tests.rs
+++ b/crates/tui/src/core/engine/tests.rs
@@ -460,6 +460,7 @@ fn turn_tool_registry_builder_keeps_plan_mode_read_only_for_files() {
     assert!(registry.contains("update_plan"));
     assert!(registry.contains("task_list"));
     assert!(registry.contains("task_read"));
+    assert!(registry.contains("recall_archive"));
 
     let plan_state_tools = [
         "checklist_add",
@@ -488,6 +489,26 @@ fn turn_tool_registry_builder_keeps_plan_mode_read_only_for_files() {
     );
 }
 
+#[test]
+fn parent_turn_registry_includes_recall_archive_for_investigative_modes() {
+    let (engine, _handle) = Engine::new(EngineConfig::default(), &Config::default());
+
+    for mode in [AppMode::Plan, AppMode::Agent, AppMode::Yolo] {
+        let registry = engine
+            .build_turn_tool_registry_builder(
+                mode,
+                engine.config.todos.clone(),
+                engine.config.plan_state.clone(),
+            )
+            .build(engine.build_tool_context(mode, false));
+
+        assert!(
+            registry.contains("recall_archive"),
+            "parent {mode:?} registry should expose recall_archive"
+        );
+    }
+}
+
 #[test]
 fn agent_mode_can_build_auto_approved_tool_context() {
     let (engine, _handle) = Engine::new(EngineConfig::default(), &Config::default());
diff --git a/crates/tui/src/core/engine/tool_setup.rs b/crates/tui/src/core/engine/tool_setup.rs
index 32a8bd69..799f4b44 100644
--- a/crates/tui/src/core/engine/tool_setup.rs
+++ b/crates/tui/src/core/engine/tool_setup.rs
@@ -61,7 +61,8 @@ impl Engine {
         builder = builder
             .with_review_tool(self.deepseek_client.clone(), self.session.model.clone())
             .with_user_input_tool()
-            .with_parallel_tool();
+            .with_parallel_tool()
+            .with_recall_archive_tool();
 
         if mode != AppMode::Plan {
             builder = builder