FiveM NUI Development

Best practices for FiveM NUI development — fullscreen UIs, NUI callbacks, messaging, and UI integration. Use this skill whenever you are dealing with FiveM user interfaces to obtain domain-specific knowledge.

When to use

• User asks how to create a UI for FiveM.
• Creating or editing HTML/CSS/JS files for FiveM resources.
• Setting up ui_page in fxmanifest.lua.
• Questions about NUI callbacks, SendNUIMessage, or SetNUIFocus.
• Need to look up natives → point to https://docs.fivem.net/natives/.

How to use

Read individual rule files for detailed explanations and examples: