fal API Key for Universal Modder

Universal Modder uses fal for generated assets. A key connects both the fal MCP server and um fal to that service. This guide covers asset setup for single-player modding only.

What fal is used for

The README’s tool overview lists image and sprite generation, image edits, background removal, textures and PBR maps, 3D models and rigging, sound effects, music, voice and video. The fal-assets skill guides asset creation; asset-pipeline prepares the results for a game’s formats.

Generated assets still need to fit the target game’s dimensions and import route. A generation alone does not prove that an asset works in the game.

Get and set FAL_KEY

Open fal’s API key dashboard to get a key. The project’s README supplies this exact shell example:

export FAL_KEY=...

Replace ... with your key in your own shell. Keep the value private. The README does not give persistent shell configuration steps or a Windows-specific variant, so those are not documented here.

Use the install guide to connect your agent and install the CLI. The key is for fal asset generation; it is not the agent plugin installation command.

Images without a fal key

um comfy connects to a local ComfyUI server without an API key. The README lists status, image and run, with run accepting workflows saved using Export (API). Its image option --sprite cuts out the result.

The documented alternative is for images. The README does not say local ComfyUI replaces every fal capability. It also does not provide a complete ComfyUI server setup or hardware requirements, so this guide does not invent them.

Pricing and next steps

Check fal’s pricing page for its current pricing. This guide does not quote rates or estimate a mod’s total cost.

For a mashup, decide what assets and behaviour you need before generating anything. Read merge games with AI, then build a small example and verify it in the actual game.

Sources

Frequently asked questions

Do I need a fal key to install the agent plugin?

The README separates the agent install steps from the fal asset key. A fal key is used by the fal MCP server and um fal for asset generation.

Can I make images without a fal API key?

Yes. The README describes um comfy using a local ComfyUI server for images without an API key. It does not document that as a replacement for all fal features.