FiveM Development — Best Practices

Framework-agnostic orchestrator. One skill — load reference files on demand (do not load all).

Language rule: Internal reasoning is in compact English. All messages and output displayed to the user must be in the user's language.

Philosophy

1. Fetch, don't memorize — When unsure about a native or API, verify from authoritative sources
2. Framework-agnostic thinking — Understand patterns, adapt to the active framework
3. Performance-first — FiveM has strict tick budgets
4. Security-aware — Server-side validation is non-negotiable
5. Clean, readable Lua over abstraction — Monolith-first (server.lua / client.lua), minimal comments, extract local function only when reused (2+ call sites; §3.11). Do not componentize Lua like React or invent event roundtrips when Tunnel/return fits.
6. Project memory — reference.mdc = lean global map (alwaysApply); .fxmind/memory/<topic>.md = shared compact recipe. Run /fxmind learn before rescanning; /fxmind memory health; /fxmind graph; /fxmind query.
7. Audit assertiveness — /fxmind audit follows performance.md §1.6.1–§1.6.2 + §2.4–§2.5 (Pass 2b E-a…E-g, Pass NUI N-a…N-d when ui_page) + security.md §5.1.
8. Quality gates (task mode) — implementing or refactoring code follows quality-gates.md: design review at Gate A, self-review loop before Gate V.