This is no longer a part of the World of Warcraft API. Crafting API was absorbed into Tradeskill API. It was removed in patch 3.0.

This command tells the caller how many reagents are required for said craft.

numRequiredReagents = GetCraftNumReagents(index)

Parameters Edit

Arguments Edit

index 

Numeric. Number from 1 to X, where X is the total number of possible crafts.

Returns Edit

numRequiredReagents 

Integer. This is the number of required reagents for said craft. ie, 4 (for any craft that requires 4 reagents to perform...)