ModsFinder

Curios API

by TheIllusiveC4

Curios gives mod developers a way to add extra accessory and equipment slots, and lets players set up those slots to their own taste.

FabricForgeNeoForgeClient and serverGNU Lesser General Public License v3.0 or laterOpen source1.13.2 – 26.3

What it does

On its own, Curios adds no content beyond an inventory screen. It defines no slots and no items for players, apart from two example items that appear only in the Creative menu. Their purpose is to show developers how to build their own integration.

Other mods register slots through Curios, and players then use the slot settings to decide how many of each slot type they have. Commands and an example datapack are included for testing and setup. Curios is client and server, so server owners and each player install it. It requires Fabric API on Fabric, and it is published for Fabric, Forge and NeoForge across 32 release versions covering 1.13.2 – 26.3. The license is GNU Lesser General Public License v3.0 or later, and the project is open source.

Key features

  1. Developer slot API

    Developers can add accessory and equipment slots through a shared interface, so their mods work with other Curios-based mods.

  2. Configurable slots

    Players and server owners can adjust the number and type of slots to suit their preferences.

  3. Commands

    Commands are included for managing and checking slots, which helps with testing integrations.

  4. Example datapack

    An example datapack shows how slot data is set up, giving developers a reference point.

  5. Development setup guide

    The project includes a guide to setting up a development environment for building Curios integrations.

Compatibility

Latest build for each game version and loader.

26.x5 of 5 versions with builds
26.3Not availableNot available17.0.0-beta.3+26.3
26.2Not availableNot available16.0.0+26.2
26.1.2Not availableNot available15.0.0+26.1.2
26.1.1Not availableNot available15.0.0+26.1.2
26.1Not availableNot available15.0.0+26.1.2
1.21.x9 of 9 versions with builds
1.21.11Not availableNot available14.0.0+1.21.11
1.21.10Not availableNot available13.0.0+1.21.10
1.21.9Not availableNot available13.0.0+1.21.10
1.21.8Not availableNot available12.0.0+1.21.8
1.21.7Not availableNot available12.0.0+1.21.8
1.21.6Not availableNot available12.0.0+1.21.8
1.21.5Not availableNot available11.0.1+1.21.5
1.21.4Not availableNot available10.0.1+1.21.4
1.21.1Not availableNot available9.5.1+1.21.1
1.20.x6 of 6 versions with builds
1.19.x5 of 5 versions with builds
1.18.x1 of 1 version with builds
1.17.x1 of 1 version with builds
1.16.x2 of 2 versions with builds
1.15.x1 of 1 version with builds
1.14.x1 of 1 version with builds
1.13.x1 of 1 version with builds
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

Required by 559 mods

L_Ender's Cataclysm1.19.2 – 1.21.5Elytra Slot1.13.2 – 1.21.5Charm of Undying1.13.2 – 1.21.1[Let's Do] Beachparty1.19.2 – 1.21.1Goety - The Dark Arts1.16.5 – 1.21.1Spell Engine1.19 – 26.3

Use cases

Adding accessory slots to a modpack

A pack author can add accessory slots from other mods and set how many each player receives.

Building a new integration

A developer can use the example items and datapack to learn how to register slots in their own mod.

Who it’s for: Mod developers who want to add accessory or equipment slots, and server owners or modpack authors who want to configure those slots.

How it compares

Full comparison

Accessories runs client and server, is published for Fabric, Forge and NeoForge across 1.20.1 – 1.21.10, and is open source under the MIT License. Spyglass Improvements runs client-side only, is published for Fabric, Forge, NeoForge and Quilt across 1.18.1 – 26.2, and is open source under the GNU General Public License v3.0 only. Elytra Accessory is client and server, open source under the MIT License, and covers 1.21 – 26.1.2.

ModLoadersGame versionsEnvironmentUpdated
Curios APIFabric, Forge and NeoForge1.13.2 – 26.3Client and server2026-10-11
AccessoriesFabric, Forge and NeoForge1.20.1 – 1.21.10Client and server2026-02-06
Spyglass ImprovementsFabric, Forge, NeoForge and Quilt1.18.1 – 26.2Client-side only2026-07-18
Elytra AccessoryFabric, Forge and NeoForge1.21 – 26.1.2Client and server2026-06-03

Questions

Does Curios need Fabric API?

Yes. On Fabric, the Fabric API library must be installed alongside Curios for it to load.

Do players need Curios installed?

Curios is client and server, so the server and each player need it when a mod that depends on it is installed.

Why are there no slots after installing Curios?

Curios adds only an inventory screen by default. Slots come from other mods that register them through the API.

Which versions does Curios support?

Curios has 32 release versions, covering 1.13.2 – 26.3. The newest NeoForge build, 17.0.0-beta.3 for 26.3, is a beta build.

In the catalog

Curios API is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 8,071 mods support Minecraft 26.3.

Library mods3,514Fabric modsMods for 26.38,071

More from TheIllusiveC4

All projects
Cherished Worlds1.12.2 – 26.3Polymorph1.15.2 – 1.21.1Comforts1.12.2 – 26.2Elytra Slot1.13.2 – 1.21.5Vein Mining1.16.4 – 1.21Charm of Undying1.13.2 – 1.21.1

Similar mods

Fabric API1.14 – 26.3Cloth Config API1.14 – 26.3YetAnotherConfigLib (YACL)1.19 – 26.3Architectury API1.16.5 – 26.3Just Enough Items (JEI)1.8 – 26.3Geckolib1.12.2 – 26.3

What the author says

Curios is a flexible and expandable accessory/equipment API for users and developers. The purpose is to provide functionality for developers to add extra accessory/equipment slots in a convenient and compatible manner, as well as to give users the ability to configure these slots to their preferences. By default…
TheIllusiveC4, on the Modrinth page

Official listing

Owner
TheIllusiveC4
Published
2023-02-03
Updated on Modrinth
2026-10-11
Facts verified
2026-10-15

Tags

EquipmentLibraryUtilityAdventure
Open on ModrinthCompare