The Handlers Guild oversees research into the breeding, sale, care, and training of animals. In addition to managing the House Vadalis ranches, licensed handlers can be found working with farming communities, stables, and caravans across Khorvaire, seeing to the care and training of animals. Although magebreeders might have the higher public profile, guild members also serve as drovers, shepherds, and stable hands. Anything tied to the care of animals is within the purview of the Handlers Guild.

The Handlers Guild is a mercantile guild under the control of House Vadalis. Unlike the dragonmarked houses in which guilds control industry while the house handles administrative tasks, Vadalis divides responsibilities in a different fashion.

The house handles research into new types of animals and new breeding programs, as well as the sale, care, and training of those animals. The Handlers Guild functions much as an outreach program, operating primarily in areas where Vadalis does not have official house enclaves. The guild serves to gather independent ranchers and breeders, share information and bloodlines, and sell Vadalis methods and training to those who want to improve their own herds through nonmagical means. In addition, the guild licenses the teamsters, drovers, stablehands, and handlers that comprise the most common face of the house in Khorvaire.

The Handlers Guild provides certification for its members, allowing them to find work with wealthy patrons who need their lands and livestock managed. It also deals with business the house does outside the Eldeen Reaches. It has almost no enclaves or outposts, its members instead meeting up wherever their travels happen to take them. Some have noted that such a fluid presence would make an excellent front for any number of sinister causes, but no evidence of such activity in Vadalis has ever been found.