diff --git a/reference/tools.rst b/reference/tools.rst
index f44571a80a4d..227abe37b8fe 100644
--- a/reference/tools.rst
+++ b/reference/tools.rst
@@ -1747,3 +1747,21 @@ for ``compiler.cppstd=17``, and so on.
 
 Parameters:
     - **settings** (Required): Conanfile settings. Use ``self.settings``.
+
+
+.. _tools.stdcpp_library:
+
+tools.stdcpp_library():
+-----------------------
+
+.. code-block:: python
+
+    def stdcpp_library(conanfile)
+
+Returns the corresponding C++ standard library to link with based on the settings of the given conanfile. For instance, it may return ``c++`` for ``compiler.libcxx=libc++``,
+ and it may return ``stdc++`` for ``compiler.libcxx=libstdc++`` or ``compiler.libcxx=libstdc++11``. Returns ``None`` if there is no C++ standard library
+ need to be linked. Usually, this is required to populate ``self.cpp_info.system_libs`` for C++ libraries with plain C API, therefore such libraries might be
+ safely used in pure C projects (or in general, non-C++ projects capable of using C API, such as written in Objective-C, Fortran, etc.).
+
+Parameters:
+    - **conanfile** (Required): ConanFile instance. Usually ``self``.