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.

Frameworks

What ox_core is and how scripts use it

An overview of ox_core, Overextended's FiveM framework: its TypeScript codebase and Lua/JS APIs, users and characters, OxPlayer, groups, bank accounts with addBalance and transferBalance, persistent vehicles, the ox stack, and when to choose it over ESX, QBCore or Qbox.

Updated 11 Sept 202610 min readBy PiTyUs · FiveM developer

Overview

ox_core is the framework from Overextended, the team behind ox_lib, ox_inventory, ox_target and oxmysql. It is written in TypeScript, keeps the core small, and leaves inventory, targeting and UI to the other ox resources. It is less common than ESX or QBCore, but popular with developers who want a clean, typed base.

Core concepts

Concept	What it is
User	The person (identified by their identifiers), with a `userId`
Character	A playable character with a `charId`
Group	Jobs, gangs and other organisations with grades
Account	Bank accounts for characters and groups, with roles and permissions
Vehicle	Owned, persistent vehicles with a VIN

Using ox_core from Lua

server.lualua

local Ox = require '@ox_core.lib.init'

RegisterCommand('payday', function(source)
    local player = Ox.GetPlayer(source)
    if not player or not player.charId then return end

    local account = Ox.GetCharacterAccount(player.charId)
    if account then
        account.addBalance({ amount = 500, message = 'Payday' })
    end
end, false)

The require form needs lua54 'yes' and ox_lib (which provides require for resource paths). OxPlayer methods such as getGroup(filter) check group membership and grade.

Accounts

Method	Does
`addBalance({ amount, message })`	Adds money
`removeBalance({ amount, overdraw, message })`	Removes money
`transferBalance({ toId, amount, ... })`	Moves money between accounts
`depositMoney` / `withdrawMoney`	Moves cash (inventory money) in and out
`createInvoice(data)`	Bills another account

JavaScript and TypeScript

Because the core is TypeScript, JS resources are first-class: install @overextended/ox_core from npm and import its functions with full types. See TypeScript scripts.

When to choose ox_core

You are building a server mostly from your own scripts and want a small, typed core.
Your team writes TypeScript.
You accept a smaller catalogue of ready-made resources than ESX or QBCore/Qbox offer.

Framework comparisons for beginners are in ESX vs QBCore vs Qbox.

Frequently asked questions

What is ox_core?

Overextended’s FiveM framework, written in TypeScript, managing users, characters, groups, accounts and vehicles.

How do I use ox_core in Lua?

local Ox = require '@ox_core.lib.init' with ox_lib started and lua54 'yes' in the manifest.

Does ox_core have its own inventory?

No. It uses ox_inventory for items and cash.

Is ox_core better than Qbox?

Neither is better in general. ox_core is smaller and typed; Qbox has a larger ecosystem through QBCore compatibility.

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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