Bagshui automatically learns about each character's professions and can identify both reagents and crafted items (via ProfessionReagent() and ProfessionCraft()).

Bagshui does not have a pre-populated database of profession data and learns when your character does.

Arbitrary access to this information is simply not available in Vanilla and only becomes accessible when the tradeskill interface is displayed.

Items like Mana Oil and Wizard Oil will never be matched by ProfessionCraft(). ^{Unlike all other professions, Enchanting uses the Craft API instead of TradeSkill. As a result, only spell IDs can be obtained.}