Apps are tools that do one thing well.

What's an app?

An app takes input, does something, and returns output.

Examples:

• stable-diffusion — prompt in, image out
• whisper — audio in, text out
• summarize — long text in, short text out

Inputs and outputs

Every app has a schema:

1stable-diffusion2├── Input3│   ├── prompt (text, required)4│   ├── style (text, optional)5│   └── size (choice, optional)6└── Output7    └── image (file)

The schema tells you what to provide and what you'll get back.

Where apps come from

How to use apps

1. Directly — Run from the workspace UI
2. In Flows — Chain with other apps
3. As Agent Tools — Let agents call them
4. Via API — Run programmatically

Creating Apps

You can create your own apps using Python. An app consists of:

1. inference.py — The code
2. inf.yml — Configuration

Code Structure

1class AppSetup(BaseAppInput):2    """Static configuration (restart required)"""3    model_name: str4 5class AppInput(BaseAppInput):6    """Request arguments (per run)"""7    prompt: str8 9class App(BaseApp):10    async def setup(self, config: AppSetup):11        pass12 13    async def run(self, input: AppInput):14        # Process request15        pass

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