Automaticaly buy reagents (or anythig), sells gray items and repair armor. MP goal is to automate anything that can be automated while interacting with merchants and be as light weight as possible.
Each time you interact with a merchant, MP will try to sell grays items, repair your armor, and it can be configured to buy reagents (or anything else) if they're availables.

Syntax:

/mp	Will show addon version and the items you want MP to buy.
/mp guild yes	repair using guild gold. ("yes" is localised, in spanish use "si", "oui" in french and "ja" in german)
/mp guild no	repair using our gold. ("no" is localised, in spanish use "no", "no" in french and "nein" in german)
/mp [Item link] n	Tells MP to maitain a stock of n (n is a number) units. If you interact with a vendor, and have less than n units of that item MP will buy the difference. If you want to stop buying something just type this again with n=0. [Item link] must be placed SHIFT-LEFT CLICKING on the item (don't try to write item name between brackets because it won't work), either from the inventory or the merchant window. If merchant window was opened while configuring MP you need to close it and open it again.

Explicación en español: http://tomaplomo.foroes.org/t64-addon-marcopolo

MarcoPolo