diff --git a/codex-rs/app-server/src/message_processor.rs b/codex-rs/app-server/src/message_processor.rs
index de4418f0e9..58efc9de66 100644
--- a/codex-rs/app-server/src/message_processor.rs
+++ b/codex-rs/app-server/src/message_processor.rs
@@ -177,6 +177,9 @@ impl MessageProcessor {
             auth_manager.clone(),
             SessionSource::VSCode,
             config.model_catalog.clone(),
+            config
+                .features
+                .enabled(codex_core::features::Feature::RequestUserInputOutsidePlanMode),
         ));
         let cloud_requirements = Arc::new(RwLock::new(cloud_requirements));
         let codex_message_processor = CodexMessageProcessor::new(CodexMessageProcessorArgs {
diff --git a/codex-rs/app-server/tests/suite/v2/turn_start.rs b/codex-rs/app-server/tests/suite/v2/turn_start.rs
index eaa017d6ae..a16003ba39 100644
--- a/codex-rs/app-server/tests/suite/v2/turn_start.rs
+++ b/codex-rs/app-server/tests/suite/v2/turn_start.rs
@@ -493,6 +493,86 @@ async fn turn_start_accepts_personality_override_v2() -> Result<()> {
     Ok(())
 }
 
+#[tokio::test]
+async fn turn_start_uses_request_user_input_flag_in_collaboration_mode_override_v2() -> Result<()> {
+    skip_if_no_network!(Ok(()));
+
+    let server = responses::start_mock_server().await;
+    let body = responses::sse(vec![
+        responses::ev_response_created("resp-1"),
+        responses::ev_assistant_message("msg-1", "Done"),
+        responses::ev_completed("resp-1"),
+    ]);
+    let response_mock = responses::mount_sse_once(&server, body).await;
+
+    let codex_home = TempDir::new()?;
+    create_config_toml(
+        codex_home.path(),
+        &server.uri(),
+        "never",
+        &BTreeMap::from([(Feature::RequestUserInputOutsidePlanMode, true)]),
+    )?;
+
+    let mut mcp = McpProcess::new(codex_home.path()).await?;
+    timeout(DEFAULT_READ_TIMEOUT, mcp.initialize()).await??;
+
+    let thread_req = mcp
+        .send_thread_start_request(ThreadStartParams {
+            model: Some("gpt-5.2-codex".to_string()),
+            ..Default::default()
+        })
+        .await?;
+    let thread_resp: JSONRPCResponse = timeout(
+        DEFAULT_READ_TIMEOUT,
+        mcp.read_stream_until_response_message(RequestId::Integer(thread_req)),
+    )
+    .await??;
+    let ThreadStartResponse { thread, .. } = to_response::<ThreadStartResponse>(thread_resp)?;
+
+    let collaboration_mode = CollaborationMode {
+        mode: ModeKind::Default,
+        settings: Settings {
+            model: "mock-model-collab".to_string(),
+            reasoning_effort: Some(ReasoningEffort::High),
+            developer_instructions: None,
+        },
+    };
+
+    let turn_req = mcp
+        .send_turn_start_request(TurnStartParams {
+            thread_id: thread.id.clone(),
+            input: vec![V2UserInput::Text {
+                text: "Hello".to_string(),
+                text_elements: Vec::new(),
+            }],
+            model: Some("mock-model-override".to_string()),
+            effort: Some(ReasoningEffort::Low),
+            summary: Some(ReasoningSummary::Auto),
+            output_schema: None,
+            collaboration_mode: Some(collaboration_mode),
+            ..Default::default()
+        })
+        .await?;
+    let turn_resp: JSONRPCResponse = timeout(
+        DEFAULT_READ_TIMEOUT,
+        mcp.read_stream_until_response_message(RequestId::Integer(turn_req)),
+    )
+    .await??;
+    let _turn: TurnStartResponse = to_response::<TurnStartResponse>(turn_resp)?;
+
+    timeout(
+        DEFAULT_READ_TIMEOUT,
+        mcp.read_stream_until_notification_message("turn/completed"),
+    )
+    .await??;
+
+    let request = response_mock.single_request();
+    let payload_text = request.body_json().to_string();
+    assert!(payload_text.contains("The `request_user_input` tool is available in Default mode."));
+
+    Ok(())
+}
+
 #[tokio::test]
 async fn turn_start_change_personality_mid_thread_v2() -> Result<()> {
     skip_if_no_network!(Ok(()));
diff --git a/codex-rs/core/config.schema.json b/codex-rs/core/config.schema.json
index de3353e30b..e0bec49cd2 100644
--- a/codex-rs/core/config.schema.json
+++ b/codex-rs/core/config.schema.json
@@ -373,6 +373,9 @@
             "request_rule": {
               "type": "boolean"
             },
+            "request_user_input_outside_plan_mode": {
+              "type": "boolean"
+            },
             "responses_websockets": {
               "type": "boolean"
             },
@@ -1660,6 +1663,9 @@
         "request_rule": {
           "type": "boolean"
         },
+        "request_user_input_outside_plan_mode": {
+          "type": "boolean"
+        },
         "responses_websockets": {
           "type": "boolean"
         },
diff --git a/codex-rs/core/src/codex.rs b/codex-rs/core/src/codex.rs
index 90ed386b12..ebcfc88d0f 100644
--- a/codex-rs/core/src/codex.rs
+++ b/codex-rs/core/src/codex.rs
@@ -8068,6 +8068,9 @@ mod tests {
             config.codex_home.clone(),
             auth_manager.clone(),
             None,
+            config
+                .features
+                .enabled(Feature::RequestUserInputOutsidePlanMode),
         ));
         let model = ModelsManager::get_model_offline_for_tests(config.model.as_deref());
         let model_info =
@@ -8143,6 +8146,9 @@ mod tests {
             config.codex_home.clone(),
             auth_manager.clone(),
             None,
+            config
+                .features
+                .enabled(Feature::RequestUserInputOutsidePlanMode),
         ));
         let agent_control = AgentControl::default();
         let exec_policy = ExecPolicyManager::default();
@@ -8298,6 +8304,9 @@ mod tests {
             config.codex_home.clone(),
             auth_manager.clone(),
             None,
+            config
+                .features
+                .enabled(Feature::RequestUserInputOutsidePlanMode),
         ));
         let agent_control = AgentControl::default();
         let exec_policy = ExecPolicyManager::default();
diff --git a/codex-rs/core/src/features.rs b/codex-rs/core/src/features.rs
index 521eb71468..5f73c04982 100644
--- a/codex-rs/core/src/features.rs
+++ b/codex-rs/core/src/features.rs
@@ -138,6 +138,8 @@ pub enum Feature {
     /// Enable collaboration modes (Plan, Default).
     /// Kept for config backward compatibility; behavior is always collaboration-modes-enabled.
     CollaborationModes,
+    /// Allow request_user_input outside plan mode.
+    RequestUserInputOutsidePlanMode,
     /// Enable personality selection in the TUI.
     Personality,
     /// Enable voice transcription in the TUI composer.
@@ -631,6 +633,16 @@ pub const FEATURES: &[FeatureSpec] = &[
         stage: Stage::Removed,
         default_enabled: true,
     },
+    FeatureSpec {
+        id: Feature::RequestUserInputOutsidePlanMode,
+        key: "request_user_input_outside_plan_mode",
+        stage: Stage::Experimental {
+            name: "Request user input outside Plan mode",
+            menu_description: "Allow Codex to use request_user_input in Default mode too.",
+            announcement: "NEW: request_user_input can be enabled outside Plan mode in /experimental.",
+        },
+        default_enabled: false,
+    },
     FeatureSpec {
         id: Feature::Personality,
         key: "personality",
diff --git a/codex-rs/core/src/models_manager/collaboration_mode_presets.rs b/codex-rs/core/src/models_manager/collaboration_mode_presets.rs
index 7b900609b3..1159229de5 100644
--- a/codex-rs/core/src/models_manager/collaboration_mode_presets.rs
+++ b/codex-rs/core/src/models_manager/collaboration_mode_presets.rs
@@ -3,14 +3,21 @@ use codex_protocol::config_types::ModeKind;
 use codex_protocol::config_types::TUI_VISIBLE_COLLABORATION_MODES;
 use codex_protocol::openai_models::ReasoningEffort;
 
+use crate::tools::handlers::request_user_input_allowed_for_mode;
+
 const COLLABORATION_MODE_PLAN: &str = include_str!("../../templates/collaboration_mode/plan.md");
 const COLLABORATION_MODE_DEFAULT: &str =
     include_str!("../../templates/collaboration_mode/default.md");
 const KNOWN_MODE_NAMES_PLACEHOLDER: &str = "{{KNOWN_MODE_NAMES}}";
 const REQUEST_USER_INPUT_AVAILABILITY_PLACEHOLDER: &str = "{{REQUEST_USER_INPUT_AVAILABILITY}}";
 
-pub(crate) fn builtin_collaboration_mode_presets() -> Vec<CollaborationModeMask> {
-    vec![plan_preset(), default_preset()]
+pub(crate) fn builtin_collaboration_mode_presets(
+    request_user_input_outside_plan_mode: bool,
+) -> Vec<CollaborationModeMask> {
+    vec![
+        plan_preset(),
+        default_preset(request_user_input_outside_plan_mode),
+    ]
 }
 
 fn plan_preset() -> CollaborationModeMask {
@@ -23,20 +30,24 @@ fn plan_preset() -> CollaborationModeMask {
     }
 }
 
-fn default_preset() -> CollaborationModeMask {
+fn default_preset(request_user_input_outside_plan_mode: bool) -> CollaborationModeMask {
     CollaborationModeMask {
         name: ModeKind::Default.display_name().to_string(),
         mode: Some(ModeKind::Default),
         model: None,
         reasoning_effort: None,
-        developer_instructions: Some(Some(default_mode_instructions())),
+        developer_instructions: Some(Some(default_mode_instructions(
+            request_user_input_outside_plan_mode,
+        ))),
     }
 }
 
-fn default_mode_instructions() -> String {
+fn default_mode_instructions(request_user_input_outside_plan_mode: bool) -> String {
     let known_mode_names = format_mode_names(&TUI_VISIBLE_COLLABORATION_MODES);
-    let request_user_input_availability =
-        request_user_input_availability_message(ModeKind::Default);
+    let request_user_input_availability = request_user_input_availability_message(
+        ModeKind::Default,
+        request_user_input_outside_plan_mode,
+    );
     COLLABORATION_MODE_DEFAULT
         .replace(KNOWN_MODE_NAMES_PLACEHOLDER, &known_mode_names)
         .replace(
@@ -55,9 +66,12 @@ fn format_mode_names(modes: &[ModeKind]) -> String {
     }
 }
 
-fn request_user_input_availability_message(mode: ModeKind) -> String {
+fn request_user_input_availability_message(
+    mode: ModeKind,
+    request_user_input_outside_plan_mode: bool,
+) -> String {
     let mode_name = mode.display_name();
-    if mode.allows_request_user_input() {
+    if request_user_input_allowed_for_mode(mode, request_user_input_outside_plan_mode) {
         format!("The `request_user_input` tool is available in {mode_name} mode.")
     } else {
         format!(
@@ -74,7 +88,7 @@ mod tests {
     #[test]
     fn preset_names_use_mode_display_names() {
         assert_eq!(plan_preset().name, ModeKind::Plan.display_name());
-        assert_eq!(default_preset().name, ModeKind::Default.display_name());
+        assert_eq!(default_preset(false).name, ModeKind::Default.display_name());
         assert_eq!(
             plan_preset().reasoning_effort,
             Some(Some(ReasoningEffort::Medium))
@@ -83,7 +97,7 @@ mod tests {
 
     #[test]
     fn default_mode_instructions_replace_mode_names_placeholder() {
-        let default_instructions = default_preset()
+        let default_instructions = default_preset(false)
             .developer_instructions
             .expect("default preset should include instructions")
             .expect("default instructions should be set");
@@ -96,7 +110,19 @@ mod tests {
         assert!(default_instructions.contains(&expected_snippet));
 
         let expected_availability_message =
-            request_user_input_availability_message(ModeKind::Default);
+            request_user_input_availability_message(ModeKind::Default, false);
+        assert!(default_instructions.contains(&expected_availability_message));
+    }
+
+    #[test]
+    fn default_mode_instructions_reflect_request_user_input_flag() {
+        let default_instructions = default_preset(true)
+            .developer_instructions
+            .expect("default preset should include instructions")
+            .expect("default instructions should be set");
+
+        let expected_availability_message =
+            request_user_input_availability_message(ModeKind::Default, true);
         assert!(default_instructions.contains(&expected_availability_message));
     }
 }
diff --git a/codex-rs/core/src/models_manager/manager.rs b/codex-rs/core/src/models_manager/manager.rs
index e43e318a15..094250fd64 100644
--- a/codex-rs/core/src/models_manager/manager.rs
+++ b/codex-rs/core/src/models_manager/manager.rs
@@ -50,6 +50,7 @@ pub struct ModelsManager {
     etag: RwLock<Option<String>>,
     cache_manager: ModelsCacheManager,
     provider: ModelProviderInfo,
+    request_user_input_outside_plan_mode: bool,
 }
 
 impl ModelsManager {
@@ -62,6 +63,7 @@ impl ModelsManager {
         codex_home: PathBuf,
         auth_manager: Arc<AuthManager>,
         model_catalog: Option<ModelsResponse>,
+        request_user_input_outside_plan_mode: bool,
     ) -> Self {
         let cache_path = codex_home.join(MODEL_CACHE_FILE);
         let cache_manager = ModelsCacheManager::new(cache_path, DEFAULT_MODEL_CACHE_TTL);
@@ -79,6 +81,7 @@ impl ModelsManager {
             etag: RwLock::new(None),
             cache_manager,
             provider: ModelProviderInfo::create_openai_provider(),
+            request_user_input_outside_plan_mode,
         }
     }
 
@@ -97,7 +100,7 @@ impl ModelsManager {
     ///
     /// Returns a static set of presets seeded with the configured model.
     pub fn list_collaboration_modes(&self) -> Vec<CollaborationModeMask> {
-        builtin_collaboration_mode_presets()
+        builtin_collaboration_mode_presets(self.request_user_input_outside_plan_mode)
     }
 
     /// Attempt to list models without blocking, using the current cached state.
@@ -348,6 +351,7 @@ impl ModelsManager {
             etag: RwLock::new(None),
             cache_manager,
             provider,
+            request_user_input_outside_plan_mode: false,
         }
     }
 
@@ -470,7 +474,8 @@ mod tests {
             .expect("load default test config");
         let auth_manager =
             AuthManager::from_auth_for_testing(CodexAuth::from_api_key("Test API Key"));
-        let manager = ModelsManager::new(codex_home.path().to_path_buf(), auth_manager, None);
+        let manager =
+            ModelsManager::new(codex_home.path().to_path_buf(), auth_manager, None, false);
         let known_slug = manager
             .get_remote_models()
             .await
@@ -507,6 +512,7 @@ mod tests {
             Some(ModelsResponse {
                 models: vec![remote_model("gpt-overlay", "Overlay", 0)],
             }),
+            false,
         );
 
         let model_info = manager
diff --git a/codex-rs/core/src/test_support.rs b/codex-rs/core/src/test_support.rs
index 5e6d611adc..3084d92fa8 100644
--- a/codex-rs/core/src/test_support.rs
+++ b/codex-rs/core/src/test_support.rs
@@ -85,5 +85,5 @@ pub fn all_model_presets() -> &'static Vec<ModelPreset> {
 }
 
 pub fn builtin_collaboration_mode_presets() -> Vec<CollaborationModeMask> {
-    collaboration_mode_presets::builtin_collaboration_mode_presets()
+    collaboration_mode_presets::builtin_collaboration_mode_presets(false)
 }
diff --git a/codex-rs/core/src/thread_manager.rs b/codex-rs/core/src/thread_manager.rs
index cb7c464362..525c1ec85a 100644
--- a/codex-rs/core/src/thread_manager.rs
+++ b/codex-rs/core/src/thread_manager.rs
@@ -143,6 +143,7 @@ impl ThreadManager {
         auth_manager: Arc<AuthManager>,
         session_source: SessionSource,
         model_catalog: Option<ModelsResponse>,
+        request_user_input_outside_plan_mode: bool,
     ) -> Self {
         let (thread_created_tx, _) = broadcast::channel(THREAD_CREATED_CHANNEL_CAPACITY);
         let skills_manager = Arc::new(SkillsManager::new(codex_home.clone()));
@@ -155,6 +156,7 @@ impl ThreadManager {
                     codex_home,
                     auth_manager.clone(),
                     model_catalog,
+                    request_user_input_outside_plan_mode,
                 )),
                 skills_manager,
                 file_watcher,
diff --git a/codex-rs/core/src/tools/handlers/mod.rs b/codex-rs/core/src/tools/handlers/mod.rs
index e5229aa1d4..8646ccde47 100644
--- a/codex-rs/core/src/tools/handlers/mod.rs
+++ b/codex-rs/core/src/tools/handlers/mod.rs
@@ -31,6 +31,7 @@ pub use multi_agents::MultiAgentHandler;
 pub use plan::PlanHandler;
 pub use read_file::ReadFileHandler;
 pub use request_user_input::RequestUserInputHandler;
+pub(crate) use request_user_input::request_user_input_allowed_for_mode;
 pub(crate) use request_user_input::request_user_input_tool_description;
 pub(crate) use search_tool_bm25::DEFAULT_LIMIT as SEARCH_TOOL_BM25_DEFAULT_LIMIT;
 pub(crate) use search_tool_bm25::SEARCH_TOOL_BM25_TOOL_NAME;
diff --git a/codex-rs/core/src/tools/handlers/request_user_input.rs b/codex-rs/core/src/tools/handlers/request_user_input.rs
index 134294d428..eb51cb25aa 100644
--- a/codex-rs/core/src/tools/handlers/request_user_input.rs
+++ b/codex-rs/core/src/tools/handlers/request_user_input.rs
@@ -1,6 +1,7 @@
 use async_trait::async_trait;
 use codex_protocol::models::FunctionCallOutputBody;
 
+use crate::features::Feature;
 use crate::function_tool::FunctionCallError;
 use crate::tools::context::ToolInvocation;
 use crate::tools::context::ToolOutput;
@@ -12,23 +13,35 @@ use codex_protocol::config_types::ModeKind;
 use codex_protocol::config_types::TUI_VISIBLE_COLLABORATION_MODES;
 use codex_protocol::request_user_input::RequestUserInputArgs;
 
-fn format_allowed_modes() -> String {
+pub(crate) fn request_user_input_allowed_for_mode(
+    mode: ModeKind,
+    request_user_input_outside_plan_mode: bool,
+) -> bool {
+    mode.allows_request_user_input() || request_user_input_outside_plan_mode
+}
+
+fn format_allowed_modes(request_user_input_outside_plan_mode: bool) -> String {
     let mode_names: Vec<&str> = TUI_VISIBLE_COLLABORATION_MODES
         .into_iter()
-        .filter(|mode| mode.allows_request_user_input())
+        .filter(|mode| {
+            request_user_input_allowed_for_mode(*mode, request_user_input_outside_plan_mode)
+        })
         .map(ModeKind::display_name)
         .collect();
 
     match mode_names.as_slice() {
         [] => "no modes".to_string(),
         [mode] => format!("{mode} mode"),
-        [first, second] => format!("{first} or {second} mode"),
-        [..] => format!("modes: {}", mode_names.join(",")),
+        [first, second] => format!("{first} and {second} modes"),
+        [..] => format!("modes: {}", mode_names.join(", ")),
     }
 }
 
-pub(crate) fn request_user_input_unavailable_message(mode: ModeKind) -> Option<String> {
-    if mode.allows_request_user_input() {
+pub(crate) fn request_user_input_unavailable_message(
+    mode: ModeKind,
+    request_user_input_outside_plan_mode: bool,
+) -> Option<String> {
+    if request_user_input_allowed_for_mode(mode, request_user_input_outside_plan_mode) {
         None
     } else {
         let mode_name = mode.display_name();
@@ -38,8 +51,10 @@ pub(crate) fn request_user_input_unavailable_message(mode: ModeKind) -> Option<S
     }
 }
 
-pub(crate) fn request_user_input_tool_description() -> String {
-    let allowed_modes = format_allowed_modes();
+pub(crate) fn request_user_input_tool_description(
+    request_user_input_outside_plan_mode: bool,
+) -> String {
+    let allowed_modes = format_allowed_modes(request_user_input_outside_plan_mode);
     format!(
         "Request user input for one to three short questions and wait for the response. This tool is only available in {allowed_modes}."
     )
@@ -71,8 +86,13 @@ impl ToolHandler for RequestUserInputHandler {
             }
         };
 
+        let request_user_input_outside_plan_mode = session
+            .features()
+            .enabled(Feature::RequestUserInputOutsidePlanMode);
         let mode = session.collaboration_mode().await.mode;
-        if let Some(message) = request_user_input_unavailable_message(mode) {
+        if let Some(message) =
+            request_user_input_unavailable_message(mode, request_user_input_outside_plan_mode)
+        {
             return Err(FunctionCallError::RespondToModel(message));
         }
 
@@ -126,17 +146,20 @@ mod tests {
 
     #[test]
     fn request_user_input_unavailable_messages_use_default_name_for_default_modes() {
-        assert_eq!(request_user_input_unavailable_message(ModeKind::Plan), None);
         assert_eq!(
-            request_user_input_unavailable_message(ModeKind::Default),
+            request_user_input_unavailable_message(ModeKind::Plan, false),
+            None
+        );
+        assert_eq!(
+            request_user_input_unavailable_message(ModeKind::Default, false),
             Some("request_user_input is unavailable in Default mode".to_string())
         );
         assert_eq!(
-            request_user_input_unavailable_message(ModeKind::Execute),
+            request_user_input_unavailable_message(ModeKind::Execute, false),
             Some("request_user_input is unavailable in Execute mode".to_string())
         );
         assert_eq!(
-            request_user_input_unavailable_message(ModeKind::PairProgramming),
+            request_user_input_unavailable_message(ModeKind::PairProgramming, false),
             Some("request_user_input is unavailable in Pair Programming mode".to_string())
         );
     }
@@ -144,8 +167,27 @@ mod tests {
     #[test]
     fn request_user_input_tool_description_mentions_plan_only() {
         assert_eq!(
-            request_user_input_tool_description(),
+            request_user_input_tool_description(false),
             "Request user input for one to three short questions and wait for the response. This tool is only available in Plan mode.".to_string()
         );
     }
+
+    #[test]
+    fn request_user_input_outside_plan_mode_allows_all_non_plan_modes() {
+        assert!(request_user_input_allowed_for_mode(ModeKind::Plan, true));
+        assert!(request_user_input_allowed_for_mode(ModeKind::Default, true));
+        assert!(request_user_input_allowed_for_mode(ModeKind::Execute, true));
+        assert!(request_user_input_allowed_for_mode(
+            ModeKind::PairProgramming,
+            true
+        ));
+        assert_eq!(
+            request_user_input_unavailable_message(ModeKind::Default, true),
+            None
+        );
+        assert_eq!(
+            request_user_input_tool_description(true),
+            "Request user input for one to three short questions and wait for the response. This tool is only available in Default and Plan modes.".to_string()
+        );
+    }
 }
diff --git a/codex-rs/core/src/tools/spec.rs b/codex-rs/core/src/tools/spec.rs
index 60bd8bb03e..b92f629f1b 100644
--- a/codex-rs/core/src/tools/spec.rs
+++ b/codex-rs/core/src/tools/spec.rs
@@ -44,6 +44,7 @@ pub(crate) struct ToolsConfig {
     pub js_repl_tools_only: bool,
     pub collab_tools: bool,
     pub collaboration_modes_tools: bool,
+    pub request_user_input_outside_plan_mode: bool,
     pub experimental_supported_tools: Vec<String>,
 }
 
@@ -66,6 +67,8 @@ impl ToolsConfig {
             include_js_repl && features.enabled(Feature::JsReplToolsOnly);
         let include_collab_tools = features.enabled(Feature::Collab);
         let include_collaboration_modes_tools = true;
+        let request_user_input_outside_plan_mode =
+            features.enabled(Feature::RequestUserInputOutsidePlanMode);
         let include_search_tool = features.enabled(Feature::Apps);
 
         let shell_type = if !features.enabled(Feature::ShellTool) {
@@ -106,6 +109,7 @@ impl ToolsConfig {
             js_repl_tools_only: include_js_repl_tools_only,
             collab_tools: include_collab_tools,
             collaboration_modes_tools: include_collaboration_modes_tools,
+            request_user_input_outside_plan_mode,
             experimental_supported_tools: model_info.experimental_supported_tools.clone(),
         }
     }
@@ -668,7 +672,7 @@ fn create_wait_tool() -> ToolSpec {
     })
 }
 
-fn create_request_user_input_tool() -> ToolSpec {
+fn create_request_user_input_tool(request_user_input_outside_plan_mode: bool) -> ToolSpec {
     let mut option_props = BTreeMap::new();
     option_props.insert(
         "label".to_string(),
@@ -739,7 +743,7 @@ fn create_request_user_input_tool() -> ToolSpec {
 
     ToolSpec::Function(ResponsesApiTool {
         name: "request_user_input".to_string(),
-        description: request_user_input_tool_description(),
+        description: request_user_input_tool_description(request_user_input_outside_plan_mode),
         strict: false,
         parameters: JsonSchema::Object {
             properties,
@@ -1520,7 +1524,9 @@ pub(crate) fn build_specs(
     }
 
     if config.collaboration_modes_tools {
-        builder.push_spec(create_request_user_input_tool());
+        builder.push_spec(create_request_user_input_tool(
+            config.request_user_input_outside_plan_mode,
+        ));
         builder.register_handler("request_user_input", request_user_input_handler);
     }
 
@@ -1836,7 +1842,7 @@ mod tests {
             create_exec_command_tool(true),
             create_write_stdin_tool(),
             PLAN_TOOL.clone(),
-            create_request_user_input_tool(),
+            create_request_user_input_tool(false),
             create_apply_patch_freeform_tool(),
             ToolSpec::WebSearch {
                 external_web_access: Some(true),
diff --git a/codex-rs/core/tests/suite/client.rs b/codex-rs/core/tests/suite/client.rs
index 5fc94a033e..84a00551f5 100644
--- a/codex-rs/core/tests/suite/client.rs
+++ b/codex-rs/core/tests/suite/client.rs
@@ -584,6 +584,9 @@ async fn prefers_apikey_when_config_prefers_apikey_even_with_chatgpt_tokens() {
         auth_manager,
         SessionSource::Exec,
         config.model_catalog.clone(),
+        config
+            .features
+            .enabled(Feature::RequestUserInputOutsidePlanMode),
     );
     let NewThread { thread: codex, .. } = thread_manager
         .start_thread(config)
diff --git a/codex-rs/core/tests/suite/model_info_overrides.rs b/codex-rs/core/tests/suite/model_info_overrides.rs
index 7a92e99f1e..4fb12f18be 100644
--- a/codex-rs/core/tests/suite/model_info_overrides.rs
+++ b/codex-rs/core/tests/suite/model_info_overrides.rs
@@ -12,7 +12,7 @@ async fn offline_model_info_without_tool_output_override() {
     let auth_manager = codex_core::test_support::auth_manager_from_auth(
         CodexAuth::create_dummy_chatgpt_auth_for_testing(),
     );
-    let manager = ModelsManager::new(config.codex_home.clone(), auth_manager, None);
+    let manager = ModelsManager::new(config.codex_home.clone(), auth_manager, None, false);
 
     let model_info = manager.get_model_info("gpt-5.1", &config).await;
 
@@ -30,7 +30,7 @@ async fn offline_model_info_with_tool_output_override() {
     let auth_manager = codex_core::test_support::auth_manager_from_auth(
         CodexAuth::create_dummy_chatgpt_auth_for_testing(),
     );
-    let manager = ModelsManager::new(config.codex_home.clone(), auth_manager, None);
+    let manager = ModelsManager::new(config.codex_home.clone(), auth_manager, None, false);
 
     let model_info = manager.get_model_info("gpt-5.1-codex", &config).await;
 
diff --git a/codex-rs/core/tests/suite/request_user_input.rs b/codex-rs/core/tests/suite/request_user_input.rs
index ac6c1d2f3f..26c192e062 100644
--- a/codex-rs/core/tests/suite/request_user_input.rs
+++ b/codex-rs/core/tests/suite/request_user_input.rs
@@ -71,10 +71,13 @@ fn call_output_content_and_success(
 
 #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
 async fn request_user_input_round_trip_resolves_pending() -> anyhow::Result<()> {
-    request_user_input_round_trip_for_mode(ModeKind::Plan).await
+    request_user_input_round_trip_for_mode(ModeKind::Plan, false).await
 }
 
-async fn request_user_input_round_trip_for_mode(mode: ModeKind) -> anyhow::Result<()> {
+async fn request_user_input_round_trip_for_mode(
+    mode: ModeKind,
+    request_user_input_outside_plan_mode: bool,
+) -> anyhow::Result<()> {
     skip_if_no_network!(Ok(()));
 
     let server = start_mock_server().await;
@@ -86,8 +89,13 @@ async fn request_user_input_round_trip_for_mode(mode: ModeKind) -> anyhow::Resul
         session_configured,
         ..
     } = builder
-        .with_config(|config| {
+        .with_config(move |config| {
             config.features.enable(Feature::CollaborationModes);
+            if request_user_input_outside_plan_mode {
+                config
+                    .features
+                    .enable(Feature::RequestUserInputOutsidePlanMode);
+            }
         })
         .build(&server)
         .await?;
@@ -190,6 +198,24 @@ async fn request_user_input_round_trip_for_mode(mode: ModeKind) -> anyhow::Resul
     Ok(())
 }
 
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn request_user_input_round_trip_resolves_pending_in_default_mode_with_flag()
+-> anyhow::Result<()> {
+    request_user_input_round_trip_for_mode(ModeKind::Default, true).await
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn request_user_input_round_trip_resolves_pending_in_execute_mode_with_flag()
+-> anyhow::Result<()> {
+    request_user_input_round_trip_for_mode(ModeKind::Execute, true).await
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn request_user_input_round_trip_resolves_pending_in_pair_mode_with_flag()
+-> anyhow::Result<()> {
+    request_user_input_round_trip_for_mode(ModeKind::PairProgramming, true).await
+}
+
 async fn assert_request_user_input_rejected<F>(mode_name: &str, build_mode: F) -> anyhow::Result<()>
 where
     F: FnOnce(String) -> CollaborationMode,
diff --git a/codex-rs/exec/src/lib.rs b/codex-rs/exec/src/lib.rs
index 89180d89e6..c70df6c4d8 100644
--- a/codex-rs/exec/src/lib.rs
+++ b/codex-rs/exec/src/lib.rs
@@ -374,6 +374,9 @@ pub async fn run_main(cli: Cli, codex_linux_sandbox_exe: Option<PathBuf>) -> any
         auth_manager.clone(),
         SessionSource::Exec,
         config.model_catalog.clone(),
+        config
+            .features
+            .enabled(codex_core::features::Feature::RequestUserInputOutsidePlanMode),
     ));
     let default_model = thread_manager
         .get_models_manager()
diff --git a/codex-rs/mcp-server/src/message_processor.rs b/codex-rs/mcp-server/src/message_processor.rs
index 95d48aa822..7cf24478e4 100644
--- a/codex-rs/mcp-server/src/message_processor.rs
+++ b/codex-rs/mcp-server/src/message_processor.rs
@@ -62,6 +62,9 @@ impl MessageProcessor {
             auth_manager,
             SessionSource::Mcp,
             config.model_catalog.clone(),
+            config
+                .features
+                .enabled(codex_core::features::Feature::RequestUserInputOutsidePlanMode),
         ));
         Self {
             outgoing,
diff --git a/codex-rs/tui/src/app.rs b/codex-rs/tui/src/app.rs
index 160db04ce3..0999b930ec 100644
--- a/codex-rs/tui/src/app.rs
+++ b/codex-rs/tui/src/app.rs
@@ -1234,6 +1234,9 @@ impl App {
             auth_manager.clone(),
             SessionSource::Cli,
             config.model_catalog.clone(),
+            config
+                .features
+                .enabled(codex_core::features::Feature::RequestUserInputOutsidePlanMode),
         ));
         let mut model = thread_manager
             .get_models_manager()
diff --git a/codex-rs/tui/src/chatwidget/tests.rs b/codex-rs/tui/src/chatwidget/tests.rs
index f05f7bd82b..352fd41138 100644
--- a/codex-rs/tui/src/chatwidget/tests.rs
+++ b/codex-rs/tui/src/chatwidget/tests.rs
@@ -1632,7 +1632,12 @@ async fn make_chatwidget_manual(
     let auth_manager =
         codex_core::test_support::auth_manager_from_auth(CodexAuth::from_api_key("test"));
     let codex_home = cfg.codex_home.clone();
-    let models_manager = Arc::new(ModelsManager::new(codex_home, auth_manager.clone(), None));
+    let models_manager = Arc::new(ModelsManager::new(
+        codex_home,
+        auth_manager.clone(),
+        None,
+        false,
+    ));
     let reasoning_effort = None;
     let base_mode = CollaborationMode {
         mode: ModeKind::Default,
@@ -1755,6 +1760,7 @@ fn set_chatgpt_auth(chat: &mut ChatWidget) {
         chat.config.codex_home.clone(),
         chat.auth_manager.clone(),
         None,
+        false,
     ));
 }