CurseForge · Minecraft mod
ErrorAPI
An API for my Mods, feel free to use it for yours too!
Quick answer
Which ErrorAPI release should I use?
errorapi-1.0.0-neoforge-1.21.1.jar targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is ErrorAPI required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does errorapi-1.0.0-neoforge-1.21.1.jar need?
errorapi-1.0.0-neoforge-1.21.1.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add ErrorAPI without breaking your instance.
Built for errorapi-1.0.0-neoforge-1.21.1.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use errorapi-1.0.0-neoforge-1.21.1.jar. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside errorapi-1.0.0-neoforge-1.21.1.jar. It opens that exact file at the source.
About this project
What does ErrorAPI add?
ErrorAPI (Utility & Library)
ErrorAPI is a technical utility mod designed for NeoForge 1.21.1. While it includes several demonstration elements to satisfy platform requirements, its primary purpose is to serve as a backend dependency or framework for other mods.
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Technical Features
Networking Layer: Includes a specialized network message system (
ErrorAPIFPSMessage) designed to handle data communication between the client and server.<button class="button multiple-button ng-star-inserted" aria-label="View source details. Opens side panel."></button>
Event Handling: Features centralized listeners for key mappings and input events, allowing for streamlined control configurations.
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Command Framework: Provides a foundation for custom server commands, currently demonstrated through a time-skipping utility.
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Placeholder Elements
To comply with distribution standards, the mod includes the following accessible content:
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Experience Fluid: A functional fluid with unique physics and bucket interaction.
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Logic Procedures: Backend triggers that handle block collisions and player interactions.
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Resource Assets: Complete set of textures and models for the included demonstration blocks and items.
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Installation
Platform: NeoForge.
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Version: 1.21.1.
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Developer Tool: Built using MCreator.
Project description from CurseForge.
Pick your setup
ErrorAPI by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
ErrorAPI versions and loaders
errorapi-1.0.0-neoforge-1.21.1.jar
17 Apr 2026
Looking for an older file? The official CurseForge project page is in Resources.