diff --git a/core/extension/gdextension.cpp b/core/extension/gdextension.cpp
index fa4e7eb2e26..9b3282ecba5 100644
--- a/core/extension/gdextension.cpp
+++ b/core/extension/gdextension.cpp
@@ -807,12 +807,8 @@ void GDExtension::deinitialize_library(InitializationLevel p_level) {
 }
 
 void GDExtension::_bind_methods() {
-	ClassDB::bind_method(D_METHOD("open_library", "path", "entry_symbol"), &GDExtension::open_library);
-	ClassDB::bind_method(D_METHOD("close_library"), &GDExtension::close_library);
 	ClassDB::bind_method(D_METHOD("is_library_open"), &GDExtension::is_library_open);
-
 	ClassDB::bind_method(D_METHOD("get_minimum_library_initialization_level"), &GDExtension::get_minimum_library_initialization_level);
-	ClassDB::bind_method(D_METHOD("initialize_library", "level"), &GDExtension::initialize_library);
 
 	BIND_ENUM_CONSTANT(INITIALIZATION_LEVEL_CORE);
 	BIND_ENUM_CONSTANT(INITIALIZATION_LEVEL_SERVERS);
diff --git a/doc/classes/GDExtension.xml b/doc/classes/GDExtension.xml
index 533b32218f6..c2d46dcf9eb 100644
--- a/doc/classes/GDExtension.xml
+++ b/doc/classes/GDExtension.xml
@@ -12,42 +12,18 @@
 		<link title="GDExtension example in C++">$DOCS_URL/tutorials/scripting/gdextension/gdextension_cpp_example.html</link>
 	</tutorials>
 	<methods>
-		<method name="close_library">
-			<return type="void" />
-			<description>
-				Closes the current library.
-				[b]Note:[/b] You normally should not call this method directly. This is handled automatically by [method GDExtensionManager.unload_extension].
-			</description>
-		</method>
 		<method name="get_minimum_library_initialization_level" qualifiers="const">
 			<return type="int" enum="GDExtension.InitializationLevel" />
 			<description>
 				Returns the lowest level required for this extension to be properly initialized (see the [enum InitializationLevel] enum).
 			</description>
 		</method>
-		<method name="initialize_library">
-			<return type="void" />
-			<param index="0" name="level" type="int" enum="GDExtension.InitializationLevel" />
-			<description>
-				Initializes the library bound to this GDextension at the given initialization [param level].
-				[b]Note:[/b] You normally should not call this method directly. This is handled automatically by [method GDExtensionManager.load_extension].
-			</description>
-		</method>
 		<method name="is_library_open" qualifiers="const">
 			<return type="bool" />
 			<description>
 				Returns [code]true[/code] if this extension's library has been opened.
 			</description>
 		</method>
-		<method name="open_library">
-			<return type="int" enum="Error" />
-			<param index="0" name="path" type="String" />
-			<param index="1" name="entry_symbol" type="String" />
-			<description>
-				Opens the library at the specified [param path].
-				[b]Note:[/b] You normally should not call this method directly. This is handled automatically by [method GDExtensionManager.load_extension].
-			</description>
-		</method>
 	</methods>
 	<constants>
 		<constant name="INITIALIZATION_LEVEL_CORE" value="0" enum="InitializationLevel">
diff --git a/misc/extension_api_validation/4.2-stable.expected b/misc/extension_api_validation/4.2-stable.expected
index a9390487ef6..2a2e74df1f4 100644
--- a/misc/extension_api_validation/4.2-stable.expected
+++ b/misc/extension_api_validation/4.2-stable.expected
@@ -120,3 +120,12 @@ GH-87340
 Validate extension JSON: JSON file: Field was added in a way that breaks compatibility 'classes/RenderingDevice/methods/screen_get_framebuffer_format': arguments
 
 screen_get_framebuffer_format can now specify the screen it should get the format from. The argument defaults to the main window to emulate the behavior of the old function.
+
+
+GH-88418
+--------
+Validate extension JSON: API was removed: classes/GDExtension/methods/close_library
+Validate extension JSON: API was removed: classes/GDExtension/methods/initialize_library
+Validate extension JSON: API was removed: classes/GDExtension/methods/open_library
+
+Since it was basically impossible to use these methods in any useful way, the GDExtension team agreed that breaking compatibility by removing them was OK.