--- /dev/null
+===========================
+ Ceph Storage Cluster APIs
+===========================
+
+The :term:`Ceph Storage Cluster` has a messaging layer protocol that enables
+clients to interact with a :term:`Ceph Monitor` and a :term:`Ceph OSD Daemon`.
+``librados`` provides this functionality to :term:`Ceph Clients` in the form of
+a library. All Ceph Clients either use ``librados`` or the same functionality
+encapsulated in ``librados`` to interact with the object store. For example,
+``librbd`` and ``libcephfs`` leverage this functionality. You may use
+``librados`` to interact with Ceph directly (e.g., an application that talks to
+Ceph, your own interface to Ceph, etc.).
+
+
+.. toctree::
+ :maxdepth: 2
+
+ Introduction to librados <librados-intro>
+ librados (C) <librados>
+ librados (C++) <libradospp>
+ librados (Python) <python>
+ object class <objclass-sdk>