Unified Stamina API
TestificateMods

Provides a universal API for handling different mods that provide a stamina bar

hand_monoid
fluxionary

player monoid for controlling the look and abilities of the player's hand.

persistent_monoids
fluxionary

player_monoids that persist between player sessions and server restarts/crashes.

LCD Font
Nazalassa

A simple font for font_api

Archipelago Library
Warr1024

Archipelago multi-world randomizer integration library

Interchangeable Hands
octacian

Demonstration of Luanti's capability to dynamically change the player hand.

Quest Framework
TeTpaAka

Simple framework to define quests.

Mesecons Stealthnode
Clyde

Register your own Ghoststones.

Interactive Item API
Jose_ManuelS18

Provides an API to make it easier to implement items' inner workings.

Trucraft
mt-mods

An alternative crafting system done entirely in the world.

Central Message
Wuzzy

Simple API to show messages to the center of the screen to players.

TPH's Doors API Redo
TPH

(INTENDED FOR DEVELOPERS) Attempts to ease and better simplify door mechanics + registration

Weapons API
Stix

Adds an API to easily register custom weapons

Autobox
Just_Visiting

Auto Collision/Selection Loading Boxes

Player Visibility Api
erov

Easily manage player visibility in a similar way to area protection

Function Delayer
Hybrid Dog

Allows executing functions after a delay to reduce possible lag (EDD scheduler?)

Fbt Core
Forburnt

A set of utils for other fbt_* mods

NodeCore Staybs API
Winter94

Movement parameters for various 'staybs'

Item Holders
Jose_ManuelS18

Adds 'Item Holders', blocks that hold your items in display, also provides a API.

Entity Control Function Library
Noodlemire

Adds functions to override and unregister entities.

status effects
fluxionary

api for defining player status effects

Antigrief
sorcerykid

An API for validating node and item placement via a simple callback mechanism.

Sway
lazerbeak12345

A simple inventory that makes use of Flow forms.

Bedrock Markup Language
sorcerykid

Bedrock Markup Language is an extensible markup language and API for formspecs.

Scripted World Editor
Neuromancer

API that allows you pass in scripting tables to fill a series of shapes of different sizes with different nodes

AFK Indicator
1F616EMO

API to check player AFK status

Old Wizard Font
Pyrollo

OldWizard font for Font API

Advanced Rangefinder
sorcerykid

Extends the API with search capabilities for entities

Lush
rstcxk

fully featured shell interpreter

Face Objects
1F616EMO

Calculate the facing of objects

Nametags2
Logikí

Allow objects had nametags with observers, colors and range

Ediblestuff API
lazerbeak12345

A unified API for making items, tools and armor edible. Eat armor while wearing it!

YAML Config File Library
snowyu

Load or Save YAML config file

Wield Events
mt-mods

Events for wield item switching

Node Damage
Noodlemire

Enables nodes to be partially damaged, and to be repaired afterwards.

FS51
Luke

Compatibility layer for formspecs

Shop Dialog
1F616EMO

Formspec-based shop dialog

Tasks Framework
AntumDeluge

Framework for adding tasks & quests.

DataMiner
sorcerykid

DataMiner is an analytical tool for server operators with a feature-rich API for customized report generation

Compression Lib
The4spaceconstants

A library that provides functions to procedurally register compressed versions of nodes.