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unfamily edited this page Oct 2, 2026 · 67 revisions

Iskandert's Mods Developers Documentation

Notices

The documentation provided uses the old folder structure; from version 3.0.0.0.0 onwards, configs are datapacks, but the syntax remains the same. The issue with the overwritable file being regenerated on disk is gone.

This document provides an overview of the commands and scripting systems provided by the Iska Utils mod.

Minecraft Iskandert's Library
26.1.2 Always — core systems use Iskandert's Library
1.21.1 From Iskandert's Utilities 3.6.0.0.0 onwards (install both mods on 1.21.1 for current releases)

Some features may not strictly require Iskandert's Utilities (Iskandert's Library alone is enough for part of the stack); installing both mods is still recommended. Most datapack type values stay iska_utils:XXX. Exception: shop currencies use canonical iska_lib:shop_currency (aliases iska_utils:shop_currency / shop_valute still work — see Currencies). On 26.1.2, several commands were renamed to iska_lib_* (for example /iska_lib_stage) but behave the same way.

FTB Teams (optional): Shop team sync with FTB Teams runs only if the ftbteams mod is installed. FTB Library alone is not enough. If ftbteams is absent, internal shop teams still work.

list all / clear all (stages): list all shows world, player, and team stages for the target (default @s; the team line includes the resolved team name from the shop/FTB mapping). clear all clears player, world, and team stages for the target’s team (world stages are global; other teams are not cleared).

Table of Contents

  1. Commands Added by the Mod
  2. Scripting
  3. Configurable Tags
  4. Internal Stages
  5. Advanced Features
  6. Overridable Content
  7. Currencies (Library)

Commands Added by the Mod

In 26.1.2, some commands have been renamed to iska_lib_*, but they work in exactly the same way.

/iska_utils_macro list|test

  • list - Displays a list of all loaded macro commands
  • test - Allows testing macro commands without actually executing them

/iska_lib_stage add|remove|list|set|clear

  • add - Adds a stage, with parameters:

    • world, player, team, or team_player for the stage type
    • For player / team_player self: self <stage> [silent] [hide] (example: iska_lib_stage add player self initialized true)
    • For other players: <targets> <stage> [silent] [hide] (example: iska_lib_stage add player @s initialized true)
    • stage - The string identifier for the stage (recommended to avoid spaces)
    • silent / hide - Optional booleans (default false)

  • remove - Same shape as add (including self vs targets for player/team_player)

  • list - Displays stages, with parameters:

    • world - Shows stages saved for the world
    • player - Shows stages saved for the player (target is an optional parameter, default @s)
    • team - Shows stages saved for the team (target is an optional parameter, default @s)
    • all - Shows world, player, and team stages for the target (default @s; team line includes the resolved team name)

  • set - Similar to add/remove, with parameters:

    • world, player, team, or team_player
    • For player/team_player: self <stage> <value> … or <targets> <stage> <value> …
    • value - Boolean (true|false) where true adds the stage and false removes it
    • silent / hide - Optional booleans (default false)

  • clear - Removes all stages, with parameters:

    • world, player, team, team_player, or all
    • For player/team_player: self [silent] [hide] or <targets> [silent] [hide]
    • all - Clears player, world, and team stages for the target’s team (world stages are global)
    • silent / hide - Optional booleans (default false)

  • call_action <target> <action_id> - Runs a stage action for target(s). Target supports @a, @p, @s, @r, @e, @n. Stages are rechecked at execution.

    • force - Bypass onCall=false (optional, default false)
    • silent, hide - Suppress feedback (optional)

/iska_lib_dev

  • hand - Dumps the item in hand (ID, components, tags) for debugging
  • reload - Reloads Utils dynamic configs without a full /reload (command items, stage actions, shop, structures, factory, Suspicious Delivery, Ancient Tablet, Arcane Dictionary). Requires Iska Utils + OP level 2.
  • wiki - Prints a clickable link to the developers wiki (Home)

/iska_utils_shop reload|info|balance|edit

Requires OP level 2.

  • reload - Reloads all shop configurations from files
  • info - Shows general information about the shop system
  • balance [extended] - Shows the current team's balance (compact by default; true = full numbers)
  • edit - Opens the in-game shop JSON editor (one editor at a time)

/iska_lib_team

Team management (from Iskandert's Library; not iska_utils_team):

  • create <teamName> - Creates a new team
  • delete [teamName] - Deletes own team or specified team (admin only)
  • rename <newName> [teamName] - Renames own team or specified team
  • leader <newLeader> [teamName] - Transfers team leadership
  • assistant add|remove <player> [teamName] - Manages team assistants
  • assistant_list [teamName] - Lists team assistants
  • invite <player> [teamName] - Invites player to team
  • cancelInvite <player> [teamName] - Cancels a pending invite
  • accept <teamName> - Accepts team invitation
  • leave - Leaves current team
  • info [teamName] - Shows team information
  • members [teamName] - Lists team members
  • list - Lists all teams
  • invitations - Lists your pending invitations
  • currency list|add|remove|set|move … - Admin team currency (Library 1.10+; was under /iska_utils_shop team)

/iska_lib_dev

  • hand - Dump held item components
  • reload - Quick reload of Utils data/*/load/** (requires Iska Utils)
  • wiki - Clickable developers wiki link (Home)

FTB Quests (Library 1.10+)

Optional types iska_lib:iska_stage and iska_lib:iska_currency (task + reward). See Currencies and Shop.

Scripting

Starting with version 3.0.0.0.0, configs are datapacks, not external scripts under KubeJS.

All files are JSON. Rule (Library 1.12.0.0.0+): data/<any_namespace>/load/<any_subdir>/… — namespace and folder under load/ are free; loaders match the root type. Recommended folder names below are conventions only.

Before version 3.0.0.0.0 the default base directory (can be changed in the mod's config file) was kubejs/external_scripts.

Files are identified by their type parameter:

  • iska_utils:commands_macro - For declaring custom commands that group multiple commands with various conditions and parameters.

    • Location: kubejs/external_scripts/iska_utils_macros/ (legacy) or datapack paths as documented per feature

  • iska_utils:command_item - For declaring items that execute a series of commands, including macros.

    • Location: data/<namespace>/load/iska_utils_command_items/
    • Documentation: Command-Items

  • iska_utils:suspicious_delivery - Loot table for the Suspicious Delivery item (weighted drops and messages on use). Optional entry gates (flat AND/OR or DEF if in do[]) — 3.5.0.0.0+ (gates section). Optional quick_open for shift+bulk open — 3.8.0.0.0+ (bulk section).

    • Location: data/<namespace>/load/iska_utils_suspicious_delivery/
    • Documentation: Suspicious-Delivery

  • iska_utils:stage_item - For declaring stages that limit items, allowing filtering by inventory. For example, this can block items that go into curios slots.

    • Location: any data/<namespace>/load/… with this type (recommended load/iska_utils_stage_items/; alias type iska_lib:stage_item — Library 1.12.0.0.0+)
    • Documentation: Stage-Items

  • iska_utils:stage_actions - Commands when stages are added/removed.

    • Location: any data/<namespace>/load/… with this type (recommended load/iska_utils_stage_actions/; alias type iska_lib:stage_actions — Library 1.12.0.0.0+)
    • Documentation: Stage-Actions

  • iska_lib:tools - startup Library tools (iska_lib:<id>) + AOE (Library 1.12.0.0.0+; new ids need restart).

    • Location: any data/<namespace>/load/… with this type (recommended load/iska_lib_tools/; sidecar iska_lib/tools/)
    • Documentation: Tools-Declare

  • iska_lib:liquid / iska_lib:gas - Liquid and gas definitions (Library 1.12.0.0.0+). Gases rise and dissipate instead of spreading.

    • Location: data/<namespace>/iska_lib/liquids/<id>.json or …/iska_lib/gases/<id>.json
    • Documentation: Liquid-Declare

  • iska_utils:plates - For declaring custom plates that apply potion effects, direct damage, or predefined statuses like fire and freeze.

  • iska_utils:structure - Multi-block structure definitions (placer item, machine, commands). Loaded by Utilities; core registry in Iskandert's Library on 1.21.1.

    • Location: data/<namespace>/load/iska_utils_structure_definitions/
    • Documentation: Structure-System

  • iska_utils:structure_monouse_item - Consumable item: gives materials and places a structure.

    • Location: data/<namespace>/load/iska_utils_structures_monouse/
    • Documentation: Structure-System

  • iska_utils:ancient_tab - Shared Ancient Tablet / Ancient Table recipe list (see Ancient-Tablet-and-Table). Optional entry gates (mods, stages, if[]) — 3.5.0.0.0+ (gates section).

    • Recipe JSON location: data/<namespace>/recipe/ (type field inside file)

  • iska_utils:factory - Factory machine mappings (recipe/**/*.json). Optional entry gates and DEF if[] → select — 3.5.0.0.0+ (Factory gates).

  • iska_utils:arcane_dictionary - Arcane Dictionary (Arcane Tome) trait pool: weights, luck, consume, reroll catalysts (cat), optional mod/stage gates (mods, stages, *_logic — AND/OR only).

    • Location: data/<namespace>/load/iska_utils_arcane_dictionary/
    • Documentation: Arcane-Dictionary

  • iska_lib:shop_currency - Shop currencies (Library; canonical type). Aliases: iska_utils:shop_currency, iska_utils:shop_valute.

    • Location: data/<namespace>/load/iska_utils_shop/
    • Documentation: Currencies

  • iska_utils:shop_category - For declaring categories to organize shop entries.

    • Location: data/<namespace>/load/… (see Shop)

  • iska_utils:shop_entry - For declaring items available in the shop with prices and properties.

    • Location: data/<namespace>/load/… (see Shop)

Configurable Tags

Tags read by the mod at runtime, extensible via datapack.

Tag: iska_utils:curio_compat/mimic (item)

Optional extra drop on the Artifacts Mimic loot table (only when the Artifacts mod is loaded). Defines which items can appear in that pool — default is suspicious_delivery only (artifacts are obtained by opening the Suspicious Delivery, not from the Mimic directly).

  • Pool chance: 5% per Mimic kill
  • Item selection: 1 item chosen from the tag with equal weight per item

Extend via datapack: data/iska_utils/tags/item/curio_compat/mimic.json with replace: false. Requires the Artifacts mod (optional for players). Primary obtain for Suspicious Delivery remains the Wandering Trader.

Tag: c:wrench_not_rotate (block)

Blacklist for the Swiss Wrench. Blocks in this tag cannot be rotated by the Swiss Wrench.

  • Default: vanilla beds (#minecraft:beds) Extend via datapack: create data/c/tags/block/wrench_not_rotate.json (or your namespace) with replace: false and add block IDs to values.

Internal Stages

The mod uses stages with the iska_utils_internal- prefix for internal logic. The following are documented for Dev and integrations.

Stages for Dev

These stages can be assigned via datapack/macro. Curse stages are scalable: they can be applied at player (single player), team (all members of the player's team), or world (everyone). The mod checks in that order; if any level has the stage, the effect applies.

  • iska_utils_internal-curse_flight (player | team | world)

    • Use: Disables creative flight (and from other mods) while the stage is present at the given level.
    • Where: FlightHandler (player tick event).
    • Effect: Every tick, if the stage is on the player, their team, or the world, mayfly and flying are forced to false; spectator is not affected.

  • iska_utils_internal-curse_flame (player | team | world)

    • Use: Enables "super hot" mode for Burning Brazier and Burning Flame block without using config.
    • Where: BurningBrazierItem (flame placement and inventoryTick), BurningFlameBlock (entityInside), Config (evil_things options comments).
    • Effect: If the stage is on the player, their team, or the world, Brazier and Flame set entities on fire as with burning_brazier_super_hot / burning_flame_super_hot options. For non-player entities in the flame block, only world stage is checked.

Other internal stages

  • iska_utils_internal-funpack_flight0 / iska_utils_internal-funpack_flight1 (player)

    • Use: Fanpack flight heartbeat: the mod enables flight only when funpack_flight0 is present (set by item/curio).
    • Where: FlightHandler, FanpackItem, FanpackCurioHandler.
    • Effect: Ensures the Fanpack is actually present; do not assign manually for flight.

  • iska_utils_internal-greedy_shield_equip (player)

    • Use: Indicates that the Greedy Shield is equipped.
    • Where: GreedyShieldItem, LivingIncomingDamageEventHandler.

  • iska_utils_internal-necro_crystal_heart_equip (player)

    • Use: Indicates that the Necrotic Crystal Heart is equipped.
    • Where: NecroticCrystalHeartItem, LivingIncomingDamageEventHandler.

  • iska_utils_internal-necrotic_crystal_heart (player)

    • Use: Removed when the player wakes up.
    • Where: PlayerSleep.

  • iska_utils_internal-CH:<year> (e.g. iska_utils_internal-CH:2025)

    • Use: Dynamic stages per year (Calendar/Date events).
    • Where: DateEvents.

Advanced Features

Sub-Command Implementation

The system supports implementing sub-commands using the static parameter type and conditional execution with stages. See the README.md file in the iska_utils_macros folder for a complete example and explanation.

Command Reloading

For a quick reload without restarting, use /iska_lib_dev reload (OP level 2). This reloads: command items, stage actions, stage items, shop, structures, factory recipes, Suspicious Delivery loot table, Ancient Tablet recipes, Arcane Dictionary trait pool. It does not reload macros.

For a full reload, use the standard /reload command or the mod's /reloader macro. This reloads all configs including macros.

If you change a default generated file, set overwritable to false in the file to prevent it from being regenerated.

Overridable Content

Detailed pages for developers:

Topic Page Min mod version
Factory (datapack machine recipes) Factory 3.3.0.0.0+
Command items (scripted items; improved message action) Command-Items message text: 3.4.0.0.0+
Command macros (improved message in do steps) Command-Macros message text: 3.4.0.0.0+
Suspicious Delivery (trader, loot table) Suspicious-Delivery 3.4.0.0.0+
Suspicious Delivery — quick_open / shift bulk Suspicious-Delivery 3.8.0.0.0+
Ancient Tablet & Ancient Table (shared datapack iska_utils:ancient_tab, chaos fuel) Ancient-Tablet-and-Table 3.4.0.0.0+
Arcane Dictionary / Arcane Tome (trait pool, catalysts, consume) Arcane-Dictionary 3.5.0.0.0+
Entry gates on crafting/load JSON (mods, stages, if[]) Suspicious-Delivery, Ancient-Tablet-and-Table, Factory, Arcane-Dictionary 3.5.0.0.0+ (per-page gate sections; base features keep their own min version)
Mod conditions in load JSON (mods, mods_logic, mod_conditions) Command-Items, Command-Macros, Stage-Actions, Stage-Items 3.5.0.0.0+
Stage items Stage-Items Any load/… + type / iska_lib: alias: Library 1.12.0.0.0+
Stage actions Stage-Actions Any load/… + type / iska_lib: alias: Library 1.12.0.0.0+
Liquid & Gas JSON (Library) Liquid-Declare Library 1.12.0.0.0+ (iska_lib:liquid / iska_lib:gas; bootstrap paths in Library config)
Tool AOE / Library tools Tools-Declare Library 1.12.0.0.0+ (iska_lib:tools; JSON creates iska_lib:<id> at startup; harvest via incorrect_for_drops tag; durability = max uses; Java binds any mod item)
Potion plates Potion-Plates
Shop Shop 3.12.0.0.0+ for namespaced types / tags / AutoShop fluid·gas·RF / command·stage (Shop); legacy bare item still loads
Structures Structure-System

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