`IsItemStolen`

ESO Lua API function — used by 52 of the 3,030 addons we indexed (combined 9,007,015 downloads). Signature from the official ESOUIDocumentation.txt, API version 101050.

Official signature

IsItemStolen([Bag|#Bag] bagId, integer slotIndex)

Returns: bool itemStolen

Real usage — from Advanced Filters - Updated (Inventory sub- & dropdown plugin filters)

                    if isABankDepositPanel or isVendorPanel or not isNoCrafting or isGuildStoreSellPanel or isFencePanel or isLaunderPanel or isMailSendPanel then
                        isItemStolen = IsItemStolen(bagId, slotIndex)

Short excerpt from the shipping addon Advanced Filters - Updated (Inventory sub- & dropdown plugin filters) — its ESOUI page; the code belongs to its author. Shown because documentation without a working example is half a reference.

Most-downloaded addons using it

Addon	Total downloads
Advanced Filters - Updated (Inventory sub- & dropdown plugin filters)	2,602,223
LibFilters-3.0	2,063,617
Loot Log	1,608,502
AlphaGear 2 (Builds, Gear, Skills, Banking)	848,683
Info Panel	368,274
LootDrop Reborn	192,278