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[Let's Do] API Minecraft mod for 1.21.1

A Library for Forge and Fabric with utilities such as Render Features, Recipe Books and Wood API

newest supported release 1.21.1StorageLibrary Api
Latest version
API - 1.3.0 - NEOFORGE - 1.21.1
Minecraft
1.19.2 to 1.21.1
Java
Java 21+
Loaders
NeoForge, Fabric, Forge, Quilt
Licence
not stated
Downloads
46.4M
Updated
10 mo ago
Available on
CurseForge

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version [Let's Do] API declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge, Fabric, Forge, Quilt21+declared8 Aug 2024
1.20.2Forge, NeoForge, Fabric, Quilt17+declared20 Sept 2023
1.20.1Quilt, NeoForge, Fabric, Forge17+declared12 Jun 2023
1.20Forge, NeoForge, Fabric, Quilt17+declared2 Jun 2023
1.19.2NeoForge, Fabric, Quilt, Forge17+declared5 Aug 2022

Download

From [Let's Do] API ’s own host. Nothing is re-hosted here.

Browse 39 indexed releases

For Minecraft 1.21.1

Choose the loader you use before downloading.

  • NeoForge

    API - 1.3.0 - NEOFORGE - 1.21.1 · 17 Sept 2024 · letsdo-API-forge-1.3.0-beta-release-forge.jar

    Get NeoForge

  • Fabric

    API - 1.3.0 - FABRIC - 1.21.1 · 17 Sept 2024 · letsdo-API-fabric-1.3.0-beta-release-fabric.jar

    Get Fabric

Most recently published release

API - 1.3.0 - NEOFORGE - 1.21.1beta17 Sept 2024

letsdo-API-forge-1.3.0-beta-release-forge.jar · 1.3 MB · for 1.21.1 · NeoForge

Download this release
9858fa564471…
Older versions24

Frequently asked

Does [Let's Do] API work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version [Let's Do] API declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does [Let's Do] API support?

Everything the author has declared, from 1.19.2 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Which platform or loader does [Let's Do] API support?

NeoForge, Fabric, Forge, Quilt. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for [Let's Do] API ?

Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

How do I install [Let's Do] API ?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download [Let's Do] API safely?

Start with the author's page on CurseForge, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

BookshelfAn open source library for other mods!GeckoLibA 3D animation library for entities, blocks, items, armor, and more!Cloth Config API (Fabric/Forge/NeoForge)Config Screen API for MinecraftJourneyMapReal-time map used for mapping in-game or your browser as you explore.Architectury APIAn intermediary api aimed to ease developing multiplatform mods.Enchantment DescriptionsAdds in-game descriptions for enchantments to tooltips.

Details from CurseForge, where the author last updated it on 7 Jan 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

Is this information wrong or missing something? .