Primary stats and node unlock changes

There is a request for item in character's inventory (i.e http://www.bungie.net/Platform/Destiny/1/Account/4611686018433249821/Character/2305843009216254186/Inventory/6917529028763633792/?lc=en&fmt=true&lcin=true&definitions=true). In response, there are nodes 'primaryStat' and 'statsOnNodes' that describe basic stats of an item and how they will change, when perks are unlocked. Is there any public endpoint, that describes same thing for arbitrary item? I understand that specific perks and stats may be connected with specific character, but may be there any list of all possible modifications? I.e. talentgridnode -> stat modifications.