diff --git a/docs/api/models.rst b/docs/api/models.rst
new file mode 100644
index 00000000..75f9ab02
--- /dev/null
+++ b/docs/api/models.rst
@@ -0,0 +1,8 @@
+*********************************************
+:mod:`mopidy.models` -- Immutable data models
+*********************************************
+
+.. automodule:: mopidy.models
+    :synopsis: Immutable data models.
+    :members:
+    :undoc-members:
diff --git a/docs/conf.py b/docs/conf.py
index f0d29003..8cb63290 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -16,13 +16,13 @@ import sys, os
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
-#sys.path.append(os.path.abspath('.'))
+sys.path.append(os.path.abspath(os.path.dirname(__file__) + '/../'))
 
 # -- General configuration -----------------------------------------------------
 
 # Add any Sphinx extension module names here, as strings. They can be extensions
 # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
-extensions = []
+extensions = ['sphinx.ext.autodoc']
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
@@ -147,7 +147,7 @@ html_static_path = ['_static']
 #html_split_index = False
 
 # If true, links to the reST sources are added to the pages.
-#html_show_sourcelink = True
+html_show_sourcelink = False
 
 # If true, an OpenSearch description file will be output, and all pages will
 # contain a <link> tag referring to it.  The value of this option must be the
diff --git a/docs/development.rst b/docs/development.rst
index 68239393..959dcd58 100644
--- a/docs/development.rst
+++ b/docs/development.rst
@@ -6,6 +6,15 @@ Development of Mopidy is coordinated through the IRC channel ``#mopidy`` at
 ``irc.freenode.net`` and through `GitHub <http://github.com/>`_.
 
 
+API documentation
+=================
+
+.. toctree::
+    :glob:
+
+    api/*
+
+
 Scope
 =====
 
diff --git a/docs/index.rst b/docs/index.rst
index 08a9dacd..7c618dc3 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -14,5 +14,6 @@ Indices and tables
 ==================
 
 * :ref:`genindex`
+* :ref:`modindex`
 * :ref:`search`
 
diff --git a/mopidy/models.py b/mopidy/models.py
index bd47c1ef..d81dfe4f 100644
--- a/mopidy/models.py
+++ b/mopidy/models.py
@@ -1,20 +1,40 @@
 from copy import copy
 
 class Artist(object):
+    """
+    :param uri: artist URI
+    :type uri: string
+    :param name: artist name
+    :type name: string
+    """
+
     def __init__(self, uri=None, name=None):
         self._uri = None
         self._name = name
 
     @property
     def uri(self):
+        """The artist URI. Read-only."""
         return self._uri
 
     @property
     def name(self):
+        """The artist name. Read-only."""
         return self._name
 
 
 class Album(object):
+    """
+    :param uri: album URI
+    :type uri: string
+    :param name: album name
+    :type name: string
+    :param artists: album artists
+    :type artists: list of :class:`Artist`
+    :param num_tracks: number of tracks in album
+    :type num_tracks: integer
+    """
+
     def __init__(self, uri=None, name=None, artists=None, num_tracks=0):
         self._uri = uri
         self._name = name
@@ -23,22 +43,45 @@ class Album(object):
 
     @property
     def uri(self):
+        """The album URI. Read-only."""
         return self._uri
 
     @property
     def name(self):
+        """The album name. Read-only."""
         return self._name
 
     @property
     def artists(self):
+        """List of :class:`Artist` elements. Read-only."""
         return copy(self._artists)
 
     @property
     def num_tracks(self):
+        """The number of tracks in the album. Read-only."""
         return self._num_tracks
 
 
 class Track(object):
+    """
+    :param uri: track URI
+    :type uri: string
+    :param title: track title
+    :type title: string
+    :param artists: track artists
+    :type artists: list of :class:`Artist`
+    :param album: track album
+    :type album: :class:`Album`
+    :param track_no: track number in album
+    :type track_no: integer
+    :param date: track release date
+    :type date: :class:`datetime.date`
+    :param length: track length in milliseconds
+    :type length: integer
+    :param id: track ID (unique and non-changing as long as the process lives)
+    :type id: integer
+    """
+
     def __init__(self, uri=None, title=None, artists=None, album=None,
             track_no=0, date=None, length=None, id=None):
         self._uri = uri
@@ -52,37 +95,52 @@ class Track(object):
 
     @property
     def uri(self):
+        """The track URI. Read-only."""
         return self._uri
 
     @property
     def title(self):
+        """The track title. Read-only."""
         return self._title
 
     @property
     def artists(self):
+        """List of :class:`Artist`. Read-only."""
         return copy(self._artists)
 
     @property
     def album(self):
+        """The track :class:`Album`. Read-only."""
         return self._album
 
     @property
     def track_no(self):
+        """The track number in album. Read-only."""
         return self._track_no
 
     @property
     def date(self):
+        """The track release date. Read-only."""
         return self._date
 
     @property
     def length(self):
+        """The track length in milliseconds. Read-only."""
         return self._length
 
     @property
     def id(self):
+        """The track ID. Read-only."""
         return self._id
 
     def mpd_format(self, position=0):
+        """
+        Format track for output to MPD client.
+
+        :param position: track's position in playlist
+        :type position: integer
+        :rtype: list of two-tuples
+        """
         return [
             ('file', self.uri),
             ('Time', self.length // 1000),
@@ -96,10 +154,24 @@ class Track(object):
         ]
 
     def mpd_format_artists(self):
+        """
+        Format track artists for output to MPD client.
+
+        :rtype: string
+        """
         return u', '.join([a.name for a in self.artists])
 
 
 class Playlist(object):
+    """
+        :param uri: playlist URI
+        :type uri: string
+        :param name: playlist name
+        :type name: string
+        :param tracks: playlist's tracks
+        :type tracks: list of :class:`Track` elements
+    """
+
     def __init__(self, uri=None, name=None, tracks=None):
         self._uri = uri
         self._name = name
@@ -107,21 +179,30 @@ class Playlist(object):
 
     @property
     def uri(self):
+        """The playlist URI. Read-only."""
         return self._uri
 
     @property
     def name(self):
+        """The playlist name. Read-only."""
         return self._name
 
     @property
     def tracks(self):
+        """List of :class:`Track` elements. Read-only."""
         return copy(self._tracks)
 
     @property
     def length(self):
+        """The number of tracks in the playlist. Read-only."""
         return len(self._tracks)
 
     def mpd_format(self, start=0, end=None):
+        """
+        Format playlist for output to MPD client.
+
+        :rtype: list of lists of two-tuples
+        """
         if end is None:
             end = self.length
         tracks = []