Break through FlutterFlow's complexity ceiling.
AI-powered custom code generation that actually works in FlutterFlow.
The Problem • The Solution • Features • Quick Start • How It Works
FlutterFlow is incredible for building apps fast. Until you hit the wall.
You need a custom radial gauge. A signature pad. An audio visualizer. A chart that doesn't exist in the component library. Suddenly, you're staring at a "Custom Widget" editor with zero guidance.
The pain points:
- AI tools generate Flutter code that breaks in FlutterFlow
void main()andScaffoldwrappers that won't compile- Import statements that cause "Unknown Import" errors
- Data classes that don't match FlutterFlow's Struct system
- Hours of debugging cryptic build failures
What if your AI actually understood FlutterFlow's constraints?
FlutterFlow Custom Code Command is a specialized code generation pipeline built from the ground up for FlutterFlow compatibility.
It doesn't just generate Flutter code. It generates FlutterFlow-ready artifacts that paste directly into the Custom Code editor and compile on the first try.
Automatically determines whether your request needs a Custom Function, Custom Action, or Custom Widget—and applies the correct constraints for each.
| Artifact Type | What It's For | Key Constraints |
|---|---|---|
| Custom Function | Sync logic, math, formatting | No external packages, pure Dart only |
| Custom Action | Async operations, APIs, side effects | Must return Future<T>, can use packages |
| Custom Widget | Visual components, charts, gestures | Must handle width/height params, use LayoutBuilder |
Every line of generated code is checked against FlutterFlow's rigid architecture:
- No
main(),runApp(),MaterialApp, orScaffold - No import statements (FlutterFlow manages these)
- Proper null safety with
??and?.operators - FlutterFlow Structs instead of custom Dart classes
FlutterFlowTheme.of(context)instead of hardcoded colors- Correct callback signatures with
Future<dynamic> Function()? - Proper
dispose()for controllers
The Code Dissector doesn't just find problems—it tells you exactly what to fix:
## Overall Score: 75/100
## Critical Issues
- Found `import 'package:flutter/material.dart'` on line 1
→ Remove this. FlutterFlow manages imports automatically.
## Required User Actions in FlutterFlow
- Add to Dependencies: `google_fonts: ^6.1.0`
- Create Data Type: `GaugeZoneStruct` with fields:
- color (Color)
- startAngle (Double)
- endAngle (Double)
Choose your AI backend:
- Gemini 3.0 Flash (default, fastest)
- Gemini 2.5 Flash (fallback)
- Claude 4.5 Opus (optional)
- GPT-5.2 Codex (optional)
Each model receives optimized prompts tailored to its strengths.
git clone https://github.com/yourusername/dreamflow-command-dashboard.git
cd dreamflow-command-dashboard
npm installCreate a .env file in the project root:
VITE_GEMINI_API_KEY=your_gemini_api_key_here
VITE_ANTHROPIC_API_KEY=optional
VITE_OPENAI_API_KEY=optionalGet your Gemini API key from Google AI Studio.
npm run devOpen http://localhost:3000 in your browser.
npm run build # Build for production
npm run preview # Preview production build┌─────────────────────────────────────────────────────────────────────┐
│ YOUR PROMPT │
│ "Create a radial gauge with colored zones" │
└─────────────────────────────────────────────────────────────────────┘
│
▼
┌─────────────────────────────────────────────────────────────────────┐
│ STEP 1: PROMPT ARCHITECT │
│ │
│ Analyzes your request and outputs a JSON specification: │
│ • Artifact Type: CustomWidget │
│ • Parameters: width, height, currentValue, zones, onValueChanged │
│ • Data Types Needed: GaugeZoneStruct │
│ • Constraints: Must handle null dimensions, use LayoutBuilder │
└─────────────────────────────────────────────────────────────────────┘
│
▼
┌─────────────────────────────────────────────────────────────────────┐
│ STEP 2: CODE GENERATOR │
│ │
│ Receives the spec + FlutterFlow constraints → Outputs Dart code │
│ • Strict null safety │
│ • No forbidden patterns (main, Scaffold, imports) │
│ • FlutterFlowTheme integration │
│ • Proper dispose() for controllers │
└─────────────────────────────────────────────────────────────────────┘
│
▼
┌─────────────────────────────────────────────────────────────────────┐
│ STEP 3: CODE DISSECTOR │
│ │
│ Audits the generated code for FF compatibility: │
│ • Scores 0-100 based on compliance │
│ • Lists critical issues that block compilation │
│ • Provides before/after code transformations │
│ • Lists required user actions in FlutterFlow UI │
└─────────────────────────────────────────────────────────────────────┘
│
▼
┌─────────────────────────────────────────────────────────────────────┐
│ READY TO PASTE │
│ Copy directly into FlutterFlow Custom Code editor │
└─────────────────────────────────────────────────────────────────────┘
Custom Widget:
"Create a circular progress indicator with a gradient stroke and animated percentage text in the center. It should accept a
progressvalue from 0-100 and an optionalonCompletecallback."
Custom Action:
"Write an action that compresses an image using the flutter_image_compress package and returns the compressed file bytes as a Uint8List."
Custom Function:
"Create a function that validates a credit card number using the Luhn algorithm and returns true/false."
- Frontend: Vanilla JavaScript + Tailwind CSS (via CDN)
- Build Tool: Vite 5.x
- AI APIs: Google Gemini (required), Anthropic Claude / OpenAI GPT (optional)
- Syntax Highlighting: Highlight.js with Dart language support
- Fonts: Inter (UI), JetBrains Mono (code)
├── index.html # UI structure, Tailwind styles, templates
├── app.js # All application logic (single file)
├── vite.config.js # Dev server, API proxies
├── package.json # Project config & scripts
└── .env # API keys (gitignored)
Contributions are welcome! Please read our contributing guidelines before submitting PRs.
MIT License - see LICENSE for details.
Stop fighting FlutterFlow. Start building.
