diff --git a/Doxyfile b/Doxyfile
new file mode 100644
index 0000000000000..0545c06d0e623
--- /dev/null
+++ b/Doxyfile
@@ -0,0 +1,19 @@
+PROJECT_NAME = Ceph
+OUTPUT_DIRECTORY = build-doc/doxygen
+STRIP_FROM_PATH = src/
+STRIP_FROM_INC_PATH = src/include
+BUILTIN_STL_SUPPORT = YES
+SYMBOL_CACHE_SIZE = 2
+WARN_IF_UNDOCUMENTED = NO
+INPUT = src
+RECURSIVE = YES
+EXCLUDE = src/gtest \
+	src/test/virtualenv \
+	src/out
+VERBATIM_HEADERS = NO
+GENERATE_HTML = NO
+GENERATE_LATEX = NO
+GENERATE_XML = YES
+XML_PROGRAMLISTING = NO
+HAVE_DOT = YES
+DOT_TRANSPARENT = YES
diff --git a/admin/build-doc b/admin/build-doc
index fd1afe5c36588..aee1a48345c76 100755
--- a/admin/build-doc
+++ b/admin/build-doc
@@ -3,10 +3,15 @@ set -e
 cd "$(dirname "$0")"
 cd ..
 
+install -d -m0755 build-doc
+
+if [ ! -e build-doc/doxygen/xml ]; then
+    doxygen
+fi
+
 dia --filter=png-libart --export=doc/overview.png.tmp doc/overview.dia
 mv -- doc/overview.png.tmp doc/overview.png
 
-install -d -m0755 build-doc
 cd build-doc
 
 if [ ! -e virtualenv ]; then
@@ -16,6 +21,17 @@ if [ ! -x virtualenv/bin/sphinx-build ]; then
     ./virtualenv/bin/pip install sphinx
 fi
 
+# ugly kludge until breathe is distutils-friendly
+install -d breathe
+cd breathe
+if [ ! -e .git ]; then
+    git init
+fi
+if [ -z "$(git rev-parse --default HEAD)" ]; then
+    git pull --ff-only https://github.com/michaeljones/breathe.git master
+fi
+cd ..
+
 install -d -m0755 \
     output/html \
     output/man
diff --git a/doc/api/index.rst b/doc/api/index.rst
new file mode 100644
index 0000000000000..ace387b798407
--- /dev/null
+++ b/doc/api/index.rst
@@ -0,0 +1,8 @@
+===================
+ API documentation
+===================
+
+.. toctree::
+   :glob:
+
+   *
diff --git a/doc/api/librados.rst b/doc/api/librados.rst
new file mode 100644
index 0000000000000..7d9e7ff8622fc
--- /dev/null
+++ b/doc/api/librados.rst
@@ -0,0 +1,9 @@
+==============
+ Librados (C)
+==============
+
+.. doxygenfunction:: rados_pool_list
+
+.. doxygenfunction:: rados_create_with_context
+
+.. todo:: write me!
diff --git a/doc/api/libradospp.rst b/doc/api/libradospp.rst
new file mode 100644
index 0000000000000..efa340abc2298
--- /dev/null
+++ b/doc/api/libradospp.rst
@@ -0,0 +1,8 @@
+==================
+ LibradosPP (C++)
+==================
+
+.. doxygenclass:: librados::RadosClient
+   :members:
+
+.. todo:: write me!
diff --git a/doc/conf.py b/doc/conf.py
index e8b7b6faa617e..b711c5247e14f 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -17,7 +17,12 @@
 html_use_smartypants = True
 html_show_sphinx = False
 
-extensions = ['sphinx.ext.todo']
+# ugly kludge until breathe is distutils-friendly
+import sys; sys.path.append('../build-doc/breathe')
+extensions = [
+    'sphinx.ext.todo',
+    'breathe',
+    ]
 todo_include_todos = True
 
 def _get_manpages():
@@ -56,3 +61,8 @@ def _get_manpages():
                 )
 
 man_pages = list(_get_manpages())
+
+breathe_default_project = 'ceph'
+breathe_projects = dict(
+    ceph='doxygen/xml',
+    )
diff --git a/doc/index.rst b/doc/index.rst
index 507f5a035c0ad..8397157d781ae 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -92,6 +92,7 @@ Table of Contents
    tutorial
    architecture
    ops/index
+   api/index
    man/index
    papers
    glossary