How to add mods to a FiveM server?

On FiveM, "mods" take the form of resources: add-on vehicles, MLO interiors, skins, weapons, scripts. Adding them is simple once you understand the logic of the resources folder and the ensure line. Here's the clean method.

Understanding the structure of a resource

On a FiveM server, every server-side mod is a resource: a folder containing an fxmanifest.lua file that describes its files. This is different from single-player GTA V mods (the mods folder, OpenIV): here, everything goes through the resources folder.

The steps to add a mod

1. Download a reliable resource

Get your mods from recognized sources (the Cfx.re forum, the authors' GitHub, specialized shops). Check that they are compatible with your framework (ESX, QBCore) and your artifacts.

2. Drop the folder into resources

Place the resource folder in resources/ (via WebFTP or the panel's file explorer). To stay organized, many people keep their mods in a [mods] or [vehicles] subfolder.

3. Declare the resource in server.cfg

Add an ensure resource_name line in server.cfg so the server starts it. Without this line, the resource stays ignored.

4. Restart and test

Restart the server (or use restart resource_name in the txAdmin console) and check the console: a resource's startup errors show up there clearly.

Frequent special cases

• Add-on vehicles: remember to add their models to the vehicle list and respect the spawn names.
• MLOs (interiors): they often require a "stream" resource and sometimes a collision patch.
• Streaming assets: heavy files (ymap, ydr, ytd) go through a stream folder inside the resource.

Add one mod at a time and watch the console. A badly packaged resource can crash startup: if an error appears, remove the last one you added.

The weight of mods on performance

Piling on vehicles and MLOs increases server load and player loading times. A high-frequency CPU like the Ryzen 9 7950X3D handles far more content without lag: that's the hardware in Fly-Serv FiveM servers, with Anti-DDoS included and the FlyPanel to manage your resources in one click.

Conclusion

Drop the resource, declare it with ensure, restart, test: that's the whole secret. To go further on the gameplay side, see the best scripts for a FiveM server, and launch your server with Fly-Serv from €1.99/month.