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+<!-- Copyright 2015 The Chromium Authors. All rights reserved.
+     Use of this source code is governed by a BSD-style license that can be
+     found in the LICENSE file.
+-->
+## devil
+
+😈
+
+devil is a library used by the Chromium developers to interact with Android
+devices. It currently supports SDK level 16 and above.
+
+## Interfaces
+
+devil provides python APIs:
+  - [`devil.android.adb_wrapper`](docs/adb_wrapper.md) provides a thin wrapper
+    around the adb binary. Most functions and methods have direct analogues on
+    the adb command-line.
+  - [`devil.android.device_utils`](docs/device_utils.md) provides higher-level
+    functionality built on top of `adb_wrapper`. **This is the primary
+    mechanism through which chromium's scripts interact with devices.**
+
+## Utilities
+
+devil also provides command-line utilities:
+ - [`devil/utils/markdown.py`](docs/markdown.md) generated markdown
+   documentation for python modules.
+
+## Constraints and Caveats
+
+devil is used with python 2.7. Its compatibility with python 3 has not been
+tested, and neither achieving nor maintaining said compatibility is currently
+a priority.
+
+## Contributing
+
+Please see the [contributor's guide](https://github.com/catapult-project/catapult/blob/master/CONTRIBUTING.md).
+