Core Library

Built-in modules available in every Luma program without imports. Read files, parse JSON, handle command-line arguments, manage environment variables, and more.

I/O & Data

Command Line (CLI)

Parse flags, prompt for input, and access command-line arguments

JSON

Decode, encode, and pretty-print JSON data

File I/O

Read, write, copy, move, and manage files

Env

Read, write, and load environment variables from .env files

Networking & Low-Level

HTTP Client

Make HTTP requests — GET, POST, headers, JSON, form data

TCP

Open TCP connections for network communication

Buffer

Byte buffers for binary data manipulation

Crypto

Hashing, HMAC, random bytes, and constant-time comparison

Random

Random integers, floats, and booleans for general-purpose use

UUID

Generate and validate v4 and v7 UUIDs

Last updated on February 15, 2026