diff --git a/bin/update-readmes.js b/bin/update-readmes.js
index ce9d702bbbba77..d4bf9476710990 100755
--- a/bin/update-readmes.js
+++ b/bin/update-readmes.js
@@ -23,7 +23,7 @@ const packages = [
 	'escape-html',
 	//'html-entities',
 	//'i18n',
-	//'keycodes',
+	'keycodes',
 	//'plugins',
 	//'priority-queue',
 	//'redux-routine',
diff --git a/packages/keycodes/README.md b/packages/keycodes/README.md
index cb7f5cc6e1ebb9..d99081ed5823c2 100644
--- a/packages/keycodes/README.md
+++ b/packages/keycodes/README.md
@@ -34,4 +34,173 @@ onKeyDown( event ) {
 }
 ```
 
+## API
+
+<!-- START TOKEN(Autogenerated API docs) -->
+
+### ALT
+
+[src/index.js#L74-L74](src/index.js#L74-L74)
+
+Keycode for ALT key.
+
+### BACKSPACE
+
+[src/index.js#L30-L30](src/index.js#L30-L30)
+
+Keycode for BACKSPACE key.
+
+### COMMAND
+
+[src/index.js#L82-L82](src/index.js#L82-L82)
+
+Keycode for COMMAND/META key.
+
+### CTRL
+
+[src/index.js#L78-L78](src/index.js#L78-L78)
+
+Keycode for CTRL key.
+
+### DELETE
+
+[src/index.js#L66-L66](src/index.js#L66-L66)
+
+Keycode for DELETE key.
+
+### displayShortcut
+
+[src/index.js#L166-L168](src/index.js#L166-L168)
+
+An object that contains functions to display shortcuts.
+E.g. displayShortcut.primary( 'm' ) will return '⌘M' on Mac.
+
+**Type**
+
+`Object` Keyed map of functions to display shortcuts.
+
+### displayShortcutList
+
+[src/index.js#L135-L158](src/index.js#L135-L158)
+
+Return an array of the parts of a keyboard shortcut chord for display
+E.g displayShortcutList.primary( 'm' ) will return [ '⌘', 'M' ] on Mac.
+
+**Type**
+
+`Object` keyed map of functions to shortcut sequences
+
+### DOWN
+
+[src/index.js#L62-L62](src/index.js#L62-L62)
+
+Keycode for DOWN key.
+
+### ENTER
+
+[src/index.js#L38-L38](src/index.js#L38-L38)
+
+Keycode for ENTER key.
+
+### ESCAPE
+
+[src/index.js#L42-L42](src/index.js#L42-L42)
+
+Keycode for ESCAPE key.
+
+### F10
+
+[src/index.js#L70-L70](src/index.js#L70-L70)
+
+Keycode for F10 key.
+
+### isKeyboardEvent
+
+[src/index.js#L204-L218](src/index.js#L204-L218)
+
+An object that contains functions to check if a keyboard event matches a
+predefined shortcut combination.
+E.g. isKeyboardEvent.primary( event, 'm' ) will return true if the event
+signals pressing ⌘M.
+
+**Type**
+
+`Object` Keyed map of functions to match events.
+
+### LEFT
+
+[src/index.js#L50-L50](src/index.js#L50-L50)
+
+Keycode for LEFT key.
+
+### modifiers
+
+[src/index.js#L103-L114](src/index.js#L103-L114)
+
+Object that contains functions that return the available modifier
+depending on platform.
+
+-   `primary`: takes a isApple function as a parameter.
+-   `primaryShift`: takes a isApple function as a parameter.
+-   `primaryAlt`: takes a isApple function as a parameter.
+-   `secondary`: takes a isApple function as a parameter.
+-   `access`: takes a isApple function as a parameter.
+-   `ctrl`
+-   `alt`
+-   `ctrlShift`
+-   `shift`
+-   `shiftAlt`
+
+### rawShortcut
+
+[src/index.js#L123-L127](src/index.js#L123-L127)
+
+An object that contains functions to get raw shortcuts.
+E.g. rawShortcut.primary( 'm' ) will return 'meta+m' on Mac.
+These are intended for user with the KeyboardShortcuts component or TinyMCE.
+
+**Type**
+
+`Object` Keyed map of functions to raw shortcuts.
+
+### RIGHT
+
+[src/index.js#L58-L58](src/index.js#L58-L58)
+
+Keycode for RIGHT key.
+
+### SHIFT
+
+[src/index.js#L86-L86](src/index.js#L86-L86)
+
+Keycode for SHIFT key.
+
+### shortcutAriaLabel
+
+[src/index.js#L174-L194](src/index.js#L174-L194)
+
+An object that contains functions to return an aria label for a keyboard shortcut.
+E.g. shortcutAriaLabel.primary( '.' ) will return 'Command + Period' on Mac.
+
+### SPACE
+
+[src/index.js#L46-L46](src/index.js#L46-L46)
+
+Keycode for SPACE key.
+
+### TAB
+
+[src/index.js#L34-L34](src/index.js#L34-L34)
+
+Keycode for TAB key.
+
+### UP
+
+[src/index.js#L54-L54](src/index.js#L54-L54)
+
+Keycode for UP key.
+
+
+<!-- END TOKEN(Autogenerated API docs) -->
+
 <br/><br/><p align="center"><img src="https://s.w.org/style/images/codeispoetry.png?1" alt="Code is Poetry." /></p>
diff --git a/packages/keycodes/src/index.js b/packages/keycodes/src/index.js
index 5465b9df19184d..ea0047a6596f45 100644
--- a/packages/keycodes/src/index.js
+++ b/packages/keycodes/src/index.js
@@ -24,24 +24,82 @@ import { __ } from '@wordpress/i18n';
  */
 import { isAppleOS } from './platform';
 
+/**
+ * Keycode for BACKSPACE key.
+ */
 export const BACKSPACE = 8;
+/**
+ * Keycode for TAB key.
+ */
 export const TAB = 9;
+/**
+ * Keycode for ENTER key.
+ */
 export const ENTER = 13;
+/**
+ * Keycode for ESCAPE key.
+ */
 export const ESCAPE = 27;
+/**
+ * Keycode for SPACE key.
+ */
 export const SPACE = 32;
+/**
+ * Keycode for LEFT key.
+ */
 export const LEFT = 37;
+/**
+ * Keycode for UP key.
+ */
 export const UP = 38;
+/**
+ * Keycode for RIGHT key.
+ */
 export const RIGHT = 39;
+/**
+ * Keycode for DOWN key.
+ */
 export const DOWN = 40;
+/**
+ * Keycode for DELETE key.
+ */
 export const DELETE = 46;
-
+/**
+ * Keycode for F10 key.
+ */
 export const F10 = 121;
-
+/**
+ * Keycode for ALT key.
+ */
 export const ALT = 'alt';
+/**
+ * Keycode for CTRL key.
+ */
 export const CTRL = 'ctrl';
+/**
+ * Keycode for COMMAND/META key.
+ */
 export const COMMAND = 'meta';
+/**
+ * Keycode for SHIFT key.
+ */
 export const SHIFT = 'shift';
 
+/**
+ * Object that contains functions that return the available modifier
+ * depending on platform.
+ *
+ * - `primary`: takes a isApple function as a parameter.
+ * - `primaryShift`: takes a isApple function as a parameter.
+ * - `primaryAlt`: takes a isApple function as a parameter.
+ * - `secondary`: takes a isApple function as a parameter.
+ * - `access`: takes a isApple function as a parameter.
+ * - `ctrl`
+ * - `alt`
+ * - `ctrlShift`
+ * - `shift`
+ * - `shiftAlt`
+ */
 export const modifiers = {
 	primary: ( _isApple ) => _isApple() ? [ COMMAND ] : [ CTRL ],
 	primaryShift: ( _isApple ) => _isApple() ? [ SHIFT, COMMAND ] : [ CTRL, SHIFT ],