What is FiveM development and what does a FiveM developer do?

FiveM extends Grand Theft Auto V into a moddable multiplayer framework. A FiveM developer writes Lua for CitizenFX, builds NUI in HTML or React, connects MySQL via oxmysql, integrates ESX or QBCore (or custom frameworks), and optimizes for OneSync population, entity limits, and server tick performance.

Do you work with ESX, QBCore, Qbox, and ox_lib on FiveM servers?

Yes. PiTyUs ships features across ESX Legacy-style economies, QBCore and Qbox stacks, ox_lib notifications and input dialogs, ox_inventory patterns where needed, and fully custom frameworks when design goals go beyond off-the-shelf templates.

Can you build NUI (in-game browsers) for FiveM?

NUI is a core specialty: React, Vue, or Vite-built panels, shops, MDTs, crafting UIs, and admin tools with accessible markup, responsive layouts, and tight Lua↔JS bridges using NUI callbacks and message contracts.

How do you approach FiveM server performance and OneSync?

Profiling-first: reducing redundant events, batching state updates, respecting entity and player bucket rules, tuning population zones, and validating database queries. The goal is stable frame time for clients and predictable server ms under peak concurrent players.

Do you offer website and landing page work for FiveM brands?

Yes. Next.js and modern static sites for server brands, waitlist pages, rules and lore sites, and documentation hubs—SEO-oriented structure, fast Core Web Vitals, and design systems that match in-game identity.

What is CitizenFX scripting and how does it relate to FiveM?

CitizenFX is the runtime behind FiveM. Scripts use Lua with FiveM natives for entities, players, and world state. Resources are packaged with fxmanifest.lua, loaded by the server, and coordinated with client and server contexts.

How much does a custom FiveM script cost?

Pricing is scope-based rather than fixed. A small standalone resource is very different from a multi-job economy, a full NUI inventory, or an ESX-to-QBCore migration. Share the framework, the feature list, and the deadline, and you get a clear estimate with milestones before any work starts—no surprise scope creep.

Can you fix, optimize, or refactor an existing FiveM server?

Yes—server audits and refactors are a core service. That includes OneSync and server-tick profiling, removing redundant events and net traffic, fixing resource conflicts, hardening exploitable handlers, cleaning up oxmysql queries, and upgrading aging ESX or QBCore stacks without breaking live gameplay for your players.

Should I use ESX or QBCore for my GTA V roleplay server?

Both are solid—the right choice depends on your resource library, your team's familiarity, and how much custom work you plan. QBCore and Qbox ship a more modern core and tooling out of the box; ESX Legacy has a huge ecosystem and battle-tested scripts. PiTyUs builds on all of them, and on fully custom frameworks when off-the-shelf templates limit your design.

Can you convert or bridge scripts between ESX, QBCore, and Qbox?

Yes. Framework conversions and bridges are common work: porting jobs, inventories, and economies between ESX and QBCore/Qbox, wiring ox_lib and ox_inventory compatibility layers, and keeping shared exports stable so the rest of your server keeps working during the migration.

Do you build custom FiveM HUDs, phones, and inventory UIs?

NUI is a specialty. Custom HUDs, phone apps, inventories, crafting tablets, police MDTs, and admin panels in React, Vue, or vanilla CEF—responsive, accessible, and tuned for 1080p in-game rendering with tight Lua↔JS callback contracts and optimistic UI where it helps.

How can I contact PiTyUs for a FiveM commission?

Join the PiTyUs Discord at https://discord.gg/64a26MK4jZ, open a support ticket there, or send a direct message to the user pityus on Discord. Describe your scope, framework (ESX, QBCore, or custom), timeline, and whether you need NUI, database work, or full-stack delivery. This site does not list a public email or GitHub for inquiries.

What is CRM Development (crmfivem.dev) and how is PiTyUs involved?

CRM Development is an affiliated FiveM platform at https://crmfivem.dev/ offering server-oriented packages, custom scripts, and ESX/QBCore ecosystem resources, with secure role-based access and a cohesive design system. PiTyUs leads the product UI and front-end engineering; the live site credits PiTyUs in the footer as the design partner.

Engineering

Convars in FiveM: configuration that lives in server.cfg

How FiveM console variables work: set vs sets vs setr, reading them with GetConvar and GetConvarInt, replicated convars on the client, keeping secrets server-only, and using convars to configure your own resources.

Updated 11 Sept 20269 min readBy PiTyUs · FiveM developer

Overview

Convars — console variables — are the settings in server.cfg: the connection string, the server name, the licence key and dozens of resource options. The three ways to set one (set, sets, setr) decide who can see it, which is the difference between a working config and a leaked password.

set, sets and setr

Command	Visible to	Typical use
`set`	The server only	`mysql_connection_string`, API keys, private options
`sets`	Server and the public server list	`sets tags`, `sets locale`, `sets banner_detail`
`setr`	Server and every connected client	Options client scripts need, e.g. `setr inventory:imagepath`

server.cfgcfg

set mysql_connection_string "mysql://fivem:[email protected]/fivem"   # private
sets tags "roleplay, serious, economy"                            # public listing
setr ui:accent "#5b6af0"                                         # clients can read it

Reading convars in scripts

server.lua / client.lualua

local accent  = GetConvar('ui:accent', '#ffffff')      -- string
local slots   = GetConvarInt('myhud:slots', 5)         -- integer
local webhook = GetConvar('mylogs:webhook', '')        -- server only: set with `set`

if webhook == '' then
    print('^3mylogs: no webhook configured^7')
end

A client can only read convars set with setr. Reading a plain set convar on the client returns the default — which is exactly the protection you want for secrets.

Convars for your own resources

Reading options from convars lets server owners configure your resource from server.cfg without editing its files — which means updates never overwrite their settings. Prefix names with the resource (mylogs:webhook) to avoid collisions. Keep a documented list of the convars your resource reads; see script documentation.

Secrets

Many servers keep secrets in a separate cfg file that is not committed to version control and exec it from server.cfg — see Git for FiveM.

Frequently asked questions

What is the difference between set, sets and setr?

set is server-only, sets is also shown in the server list, and setr is replicated to clients so client scripts can read it.

How do I read a convar in Lua?

GetConvar('name', 'default') for strings and GetConvarInt('name', 0) for integers.

Why can my client script not read my convar?

It was set with set. Only setr convars are replicated to clients.

Is it safe to put a Discord webhook in a convar?

Yes, with set and read only on the server. Never with setr or sets.

Need this built, not just explained?

Ten years of FiveM work, from Lua to NUI

Custom resources, React NUI, ESX / QBCore / Qbox integration, OneSync performance audits and security reviews — plus the websites and SEO around your server brand.

Talk on Discord See services

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