diff --git a/React/Fabric/RCTSurfacePresenter.mm b/React/Fabric/RCTSurfacePresenter.mm
index 0892963a39b..edb6972ea2d 100644
--- a/React/Fabric/RCTSurfacePresenter.mm
+++ b/React/Fabric/RCTSurfacePresenter.mm
@@ -260,8 +260,8 @@ using namespace facebook::react;
   // Those two pieces eventually should be moved out there:
   // * `RCTImageLoader` should be moved to `RNImageComponentView`.
   // * `ReactNativeConfig` should be set by outside product code.
-  _contextContainer->registerInstance(_reactNativeConfig, "ReactNativeConfig");
-  _contextContainer->registerInstance(wrapManagedObject([_bridge imageLoader]), "RCTImageLoader");
+  _contextContainer->insert("ReactNativeConfig", _reactNativeConfig);
+  _contextContainer->insert("RCTImageLoader", wrapManagedObject([_bridge imageLoader]));
 
   return _contextContainer;
 }
diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/jni/Binding.cpp b/ReactAndroid/src/main/java/com/facebook/react/fabric/jni/Binding.cpp
index 9d2a6c12cac..80295048094 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/jni/Binding.cpp
+++ b/ReactAndroid/src/main/java/com/facebook/react/fabric/jni/Binding.cpp
@@ -136,8 +136,8 @@ void Binding::installFabricUIManager(
 
   std::shared_ptr<const ReactNativeConfig> config =
       std::make_shared<const ReactNativeConfigHolder>(reactNativeConfig);
-  contextContainer->registerInstance(config, "ReactNativeConfig");
-  contextContainer->registerInstance(javaUIManager_, "FabricUIManager");
+  contextContainer->insert("ReactNativeConfig", config);
+  contextContainer->insert("FabricUIManager", javaUIManager_);
 
   auto toolbox = SchedulerToolbox{};
   toolbox.contextContainer = contextContainer;
diff --git a/ReactCommon/fabric/components/slider/platform/android/SliderMeasurementsManager.cpp b/ReactCommon/fabric/components/slider/platform/android/SliderMeasurementsManager.cpp
index ca6e6808f2c..c44288caefc 100644
--- a/ReactCommon/fabric/components/slider/platform/android/SliderMeasurementsManager.cpp
+++ b/ReactCommon/fabric/components/slider/platform/android/SliderMeasurementsManager.cpp
@@ -26,8 +26,7 @@ Size SliderMeasurementsManager::measure(
   }
 
   const jni::global_ref<jobject> &fabricUIManager =
-      contextContainer_->getInstance<jni::global_ref<jobject>>(
-          "FabricUIManager");
+      contextContainer_->at<jni::global_ref<jobject>>("FabricUIManager");
 
   static auto measure =
       jni::findClassStatic("com/facebook/react/fabric/FabricUIManager")
diff --git a/ReactCommon/fabric/imagemanager/platform/ios/ImageManager.mm b/ReactCommon/fabric/imagemanager/platform/ios/ImageManager.mm
index d5c64f5f06b..e3b4074eb24 100644
--- a/ReactCommon/fabric/imagemanager/platform/ios/ImageManager.mm
+++ b/ReactCommon/fabric/imagemanager/platform/ios/ImageManager.mm
@@ -18,7 +18,7 @@ namespace react {
 ImageManager::ImageManager(ContextContainer::Shared const &contextContainer)
 {
   RCTImageLoader *imageLoader =
-      (RCTImageLoader *)unwrapManagedObject(contextContainer->getInstance<std::shared_ptr<void>>("RCTImageLoader"));
+      (RCTImageLoader *)unwrapManagedObject(contextContainer->at<std::shared_ptr<void>>("RCTImageLoader"));
   self_ = (__bridge_retained void *)[[RCTImageManager alloc] initWithImageLoader:imageLoader];
 }
 
diff --git a/ReactCommon/fabric/textlayoutmanager/platform/android/TextLayoutManager.cpp b/ReactCommon/fabric/textlayoutmanager/platform/android/TextLayoutManager.cpp
index b6e04fe311e..46e9fb6e68f 100644
--- a/ReactCommon/fabric/textlayoutmanager/platform/android/TextLayoutManager.cpp
+++ b/ReactCommon/fabric/textlayoutmanager/platform/android/TextLayoutManager.cpp
@@ -27,8 +27,7 @@ Size TextLayoutManager::measure(
     ParagraphAttributes paragraphAttributes,
     LayoutConstraints layoutConstraints) const {
   const jni::global_ref<jobject> &fabricUIManager =
-      contextContainer_->getInstance<jni::global_ref<jobject>>(
-          "FabricUIManager");
+      contextContainer_->at<jni::global_ref<jobject>>("FabricUIManager");
 
   static auto measure =
       jni::findClassStatic("com/facebook/react/fabric/FabricUIManager")
diff --git a/ReactCommon/fabric/uimanager/Scheduler.cpp b/ReactCommon/fabric/uimanager/Scheduler.cpp
index 1eb3fcd969f..9b78bdc649e 100644
--- a/ReactCommon/fabric/uimanager/Scheduler.cpp
+++ b/ReactCommon/fabric/uimanager/Scheduler.cpp
@@ -22,8 +22,8 @@ Scheduler::Scheduler(SchedulerToolbox schedulerToolbox) {
   runtimeExecutor_ = schedulerToolbox.runtimeExecutor;
 
   reactNativeConfig_ =
-      schedulerToolbox.contextContainer->getInstance<std::shared_ptr<const ReactNativeConfig>>(
-          "ReactNativeConfig");
+      schedulerToolbox.contextContainer
+          ->at<std::shared_ptr<const ReactNativeConfig>>("ReactNativeConfig");
 
   auto uiManager = std::make_unique<UIManager>();
   auto &uiManagerRef = *uiManager;
@@ -64,10 +64,10 @@ Scheduler::Scheduler(SchedulerToolbox schedulerToolbox) {
     UIManagerBinding::install(runtime, uiManagerBinding_);
   });
 
-  schedulerToolbox.contextContainer->registerInstance(
+  schedulerToolbox.contextContainer->insert(
+      "ComponentDescriptorRegistry_DO_NOT_USE_PRETTY_PLEASE",
       std::weak_ptr<ComponentDescriptorRegistry const>(
-          componentDescriptorRegistry_),
-      "ComponentDescriptorRegistry_DO_NOT_USE_PRETTY_PLEASE");
+          componentDescriptorRegistry_));
 }
 
 Scheduler::~Scheduler() {
diff --git a/ReactCommon/utils/ContextContainer.h b/ReactCommon/utils/ContextContainer.h
index 4e5a653607b..4889a43bc7b 100644
--- a/ReactCommon/utils/ContextContainer.h
+++ b/ReactCommon/utils/ContextContainer.h
@@ -27,6 +27,7 @@ class ContextContainer final {
   /*
    * Registers an instance of the particular type `T` in the container
    * using the provided `key`. Only one instance can be registered per key.
+   * The method does nothing if given `key` already exists in the container.
    *
    * Convention is to use the plain base class name for the key, so for
    * example if the type `T` is `std::shared_ptr<const ReactNativeConfig>`,
@@ -35,12 +36,9 @@ class ContextContainer final {
    *`EmptyReactNativeConfig`.
    */
   template <typename T>
-  void registerInstance(T const &instance, std::string const &key) const {
+  void insert(std::string const &key, T const &instance) const {
     std::unique_lock<better::shared_mutex> lock(mutex_);
 
-    assert(
-        instances_.find(key) == instances_.end() &&
-        "ContextContainer already had instance for given key.");
     instances_.insert({key, std::make_shared<T>(instance)});
 
 #ifndef NDEBUG
@@ -54,7 +52,7 @@ class ContextContainer final {
    * Throws an exception if the instance could not be found.
    */
   template <typename T>
-  T getInstance(std::string const &key) const {
+  T at(std::string const &key) const {
     std::shared_lock<better::shared_mutex> lock(mutex_);
 
     assert(
@@ -72,7 +70,7 @@ class ContextContainer final {
    * Returns an empty optional if the instance could not be found.
    */
   template <typename T>
-  better::optional<T> findInstance(std::string const &key) const {
+  better::optional<T> find(std::string const &key) const {
     std::shared_lock<better::shared_mutex> lock(mutex_);
 
     auto iterator = instances_.find(key);