# FastAIX Studio — LLM Documentation
> FastAIX Studio is an enterprise visual block programming IDE for MIT App Inventor, Kodular, Niotron, and AndroidBuilder extensions (.aix) powered by Jewel's official FAST-CLI compiler.

## Core Information
- Name: FastAIX Studio
- Author: Francisco Iago Lira Passos <iagolirapassos@gmail.com>
- Official URL: https://fastaix.web.app/
- Compiler Backend: Jewel's FAST-CLI (latest official release, github.com/jewelshkjony/fast-cli)
- Target Platforms: MIT App Inventor 2, Kodular Creator, Niotron, AndroidBuilder
- Pricing: 100% Free for extension creation, block programming, cascading file tree, in-browser compilation. Optional Cloud Storage: $3.99 USD/month Premium via Stripe.

## Project Structure
- `fast.yml`: Project manifest declaring author, min_sdk, compile_sdk, dependencies, and compiler optimization flags (R8, proguard, dexdump).
- `src/`: Java source code with clean annotations:
  - `@DesignerComponent` or `@Component`: Extension metadata.
  - `@SimpleFunction`: Callable block functions.
  - `@SimpleEvent`: Asynchronous or UI event triggers.
  - `@SimpleProperty`: Readable / writable component properties.
  - `@UsesPermissions`: Android runtime permissions.
- `deps/`: Third-party JAR/AAR dependencies.
- `out/`: Build artifacts, including generated `.aix`.

## Compiler Flags Supported
- `-r`: ProGuard obfuscation & optimization.
- `-s`: R8 bytecode shrinker.
- `-b`: Block PNG generator.
- `--core-lib`: Android Core Library Desugaring for Java 8+ APIs.
- `-dx`: Modern D8/R8 dexing.
- `-minSdk <level>`: Android minimum SDK level (default 14).
- `-target <platform>`: Target builder (ai2, kodular, niotron, androidbuilder).