diff --git a/api.md b/api.md
index db908c6..ca65370 100644
--- a/api.md
+++ b/api.md
@@ -55,11 +55,11 @@ Action|Description|Parameters
 `dropCaches`|Clears system caches|_none_
 `getUSB`|Returns a list of USB devices connected ot the pineapple|_none
 `getFstab`|Returns the contents of `/etc/config/fstab`|_none_
-`getCSS`||
+`getCSS`|Returns the contents of main.css|_none_
 `saveFstab`|Overwrites `/etc/config/fstab` with a string|<ul><li>`fstab`<li>item2</li><ul><li>A string to be written to `/etc/config/fstab`</li></ul></li></ul>
-`saveCSS`||
-`checkForUpgrade`||
-`downloadUpgrade`||
+`saveCSS`|Overwrites the contents of main.css with a string|<ul><li>`css`<li>item2</li><ul><li>A string to be written to `/pineapple/css/main.css`</li></ul></li></ul>
+`checkForUpgrade`|Fetches the list of upgrades and the description of each|_none_
+`downloadUpgrade`|Upgrades the pineapple to a specified firmare version (see output of `checkForUpgrades`)|<ul><li>`version`<li>item2</li><ul><li>The version to which the pineapple should be upgraded</li></ul></li></ul>
 `getDownloadStatus`||
 `performUpgrade`||
 `getCurrentVersion`||