Minecraft mod to locate items in nearby inventories. Press Y over an item to search.

• Fabric API
• YACL

Also embeds JackFredLib.

• Server-side functionality - clients without the mod can use the command /whereis (default, changeable) to use the mod.
• Detailed searching - search by item ID, name, item tag, fluid contents, enchantment, potions, and more, and any combination of the previous.
• Support for recipe viewers, including the vanilla Recipe Book, and for JEI, REI, EMI:
  • Ability to search for items containing specific fluids, and tags for recipes.
  • Custom searches (search for enchantments using enchanted books, and potion effects using potions).
  • Smart favourite handling - add a named Shulker Box in your favourites, and search for it regardless of the contents.

Press Y (by default) to search by item ID.

Hold shift to also search for NBT data.

Will search for tags in the recipe if applicable. If hovered over a fluid, will search for items containing said fluid.

Normally matches the inventory, however certain items contain different behavior:

• Enchanted books will search for any items with that enchantment. Holding shift will specify the level as well.
• Potions will search for the potion effect on any item. Holding shift will match the specific item.

Will try to look for the specific item by looking at name, enchantments or potion effects.

An API is available under the api packages for the following purposes:

• OverlayStackBehavior.EVENT - Build a custom search request from an overlay stack if pressed; used for example to look for enchantments on any item by using enchanted books, or potion effects from potions for example.
• SearchInvoker.EVENT - Client-sided search initiators; could be asking the server or looking through a local cache.
• SearchRequestPopulator.EVENT - Obtaining the correct criteria for a search from a given screen.
• ShouldIgnoreKey.EVENT - Check to see if the keybind should be ignored in that instant - this is used to cancel if a search bar is focused, for example.
• OnResult.EVENT - Called whenever any search returns a value, with all results. Use to, for example, add additional overlays or recording.
• RenderUtils - Information on the currently displayed overlay, as well as scheduling text rendering.

• NestedItemStackSearcher.EVENT - Testing against sub-items, such as for backpacks or other containers.
• BlockSearcher.EVENT - By default, Where Is It uses the Fabric Transfer API to get all stacks in a block. You can use this event to override this for custom behavior/handling.
• ConnectedBlocksGrabber - Used to detect which blocks are connected with each-other, such as chests or storage drawers.
• criteria.Criterion - Class to extend if making new criteria; create a new Criterion.Type<T> to go along with it and register using Criterion#register.

See the wiki.