Contributors:

kh498, cybermaxke (backend API, https://github.com/Cybermaxke/MerchantsAPI)

Supported Minecraft Versions:

• 1.8, 1.9, 1.10, 1.11

Note: When a new minecraft version comes out it is possible to use an updated api. Simply drop the desired version into the plugin directory and you're good to go.
It can be found here: https://github.com/Cybermaxke/MerchantsAPI

Synapsis
TraderSk let's you open merchant GUIs (the one vanilla mc villagers use) and customize everything about them.

Features

• Let's you choose whatever items you want
• Add as many pages you want
• Let one of the input items be air
• Change and color the title

Effects

Create trader

Code (Skript):

1. (create|make) [a] [merchant] trader [named] %string%

remove a trader

Code (Skript):

1. (remove|clear) [the] [merchant] trader [named] %string%

Change items in a page

Code (Skript):

1. set items in page %number% (for|of) [merchant] trader %string% to %itemstack% as output[ item](,| and) %itemstack%[ and %-itemstack%] as input[ item[s]]

Remove a page from a trader

Code (Skript):

1. (remove|clear|delete) page %number% (from|of|for) [merchant] trader %string%

remove all traders

Code (Skript):

1. (remove|clear|delete) all [merchant] traders

show the trader to player

Code (Skript):

1. (open|show) [merchant] trader %string% to %player%

Change the title in the gui

Code (Skript):

1. (rename|set name [of|for]) [merchant] trader %string% to %string%

save changes to disk (this actions is not performed automatically)

Code (Skript):

1. save all [merchant] trader[s]

Example
A test script:
https://github.com/kh498/TraderSk#example
Pictures

Spoiler: Pictures