E html> Custom Lua & C# Scripts From Scratch | FiveM Developer - RAX Development
May 28, 2026 RAX Development

Can You Write Completely Custom Lua or C# Scripts From Scratch?

Can you write completely custom Lua or C# scripts from scratch? Yes — RAX Development builds original FiveM Lua resources and C# tooling from $49.

Can you write completely custom Lua or C# scripts from scratch? Yes. RAX Development writes original code for FiveM communities — not repackaged leaked resources. For in-game FiveM resources, almost all work is Lua (client/server) plus HTML/CSS/JavaScript for NUI menus. We also write C# from scratch when the scope fits companion tools (utilities, bots, panels) or integrations you specify.

Quick answer: Custom Lua FiveM scripts from $49 (basic) to $99+ (advanced NUI/systems). Large exclusive systems quoted on scope. C# projects quoted individually. Describe your idea · Script packages

What “from scratch” means

  • New architecture — Your feature design, not a renamed Tebex script
  • Your framework — Built for QBCore, ESX, or Qbox exports you actually use
  • Readable source — Maintainable files your team or dev standby can patch
  • Performance-aware — Sensible Wait() loops, oxmysql patterns, resmon-friendly design (optimization guide)

“From scratch” is different from porting ESX to QBCore or installing a bought script — we design and implement your logic. See also custom exclusive scripts.

Lua vs C# for FiveM (which you need)

Language Typical use on FiveM RAX Development
LuaServer/client resources: jobs, heists, economy, interactions, callbacksPrimary — custom scripts from $49
HTML/JS/CSSNUI tablets, MDTs, shop UIs inside resourcesIncluded in advanced Lua/NUI packages
C#Standalone tools, Discord bots, panels, some external integrationsYes, from scratch when scoped (quote)
SQLoxmysql tables for persistenceDesigned with Lua resources

If your goal is gameplay on a live FiveM server, you almost always want custom Lua. Ask for C# when you need a separate application or automation outside the resource folder.

Custom Lua scripts we build from scratch

  • Jobs, side hustles, and progression systems
  • Heists, robberies, and instanced activities
  • Housing, garages, and vehicle keys logic
  • Police/EMS tools, MDT hooks, evidence systems
  • Economy sinks, crafting, and custom shops
  • Admin/staff tools with permission checks
  • Integration with ox_lib, ox_target, qb-target, ox_inventory

Custom C# we can build from scratch

Examples when C# is the right fit (quoted per project):

  • Discord bots tied to your server (whitelist, tickets, status)
  • Small desktop or web utilities for staff workflows
  • Data export/import tools between databases
  • Custom APIs that your Lua resources call via HTTP

We will tell you honestly if Lua-only inside FiveM is simpler and cheaper than splitting across C# services.

Pricing (published packages)

Package From From scratch includes
Basic custom script$49Single feature, commands, small job logic
Custom Script+$74More callbacks, config, framework hooks
Advanced custom script$99NUI, multi-step systems, database tables
Large exclusive / C# toolingQuoteFull design doc, milestones, testing on your staging server

Full market ranges: how much does a FiveM developer cost?

Our development process

  1. Scope — You describe the feature, framework, and must-have behavior
  2. Quote — Fixed package or custom quote with delivery window (timelines)
  3. Build — Lua/C# written from scratch on a test resource; NUI if needed
  4. Staging test — You install on a dev/staging server before production
  5. Handoff — Source files, fxmanifest.lua, SQL, short README for staff

What we need from you

  • Framework: QBCore, ESX, or Qbox (+ inventory/target stack)
  • Written feature list (even bullet points)
  • Reference videos or mockups if you have them
  • Staging server access or willingness to test via txAdmin
  • Whether the script must be exclusive to your server (exclusive policy)

What we do not do

  • Decrypt or resell escrowed/encrypted scripts you do not own
  • Copy leaked Tebex resources and rename them
  • Guarantee compatibility with every random paid asset without testing

Why hire RAX for custom scripts

US Navy Veteran, 13 years IT, full-time FiveM developer. Original Lua for QBCore and ESX, optional C# tooling, and optional ongoing support after delivery. Reviews · Scripts made by RAX · Shop

Related: High ping / latency · Text menus → target · Custom UI (React, Vue, HTML/CSS) · Discord staff webhooks · Secure triggers from mod menus · Custom scripts options · Server build · Best fivem dev

Conclusion

Can you write completely custom Lua or C# scripts from scratch? Yes — RAX Development builds original Lua FiveM resources from $49 and C# tooling when your scope needs it. Send your idea for a fixed package or custom quote.

Order custom scripts

Custom Lua scripts from $49. Server builds from $99. Dev standby from $199/mo.

Script packages Server build