QBCore Framework

Server/client API for qb-core: Player object, PlayerData, callbacks, jobs, gangs, money and metadata.

Activation Contract

Load this skill when the user creates or edits a qb-core resource, touches Player / QBCore.PlayerData, needs jobs, gangs, money, items or metadata through QBCore, or asks about QBCore callbacks, events or best practices.

This skill targets qb-core (qbcore-framework). If the user is on Qbox (qbx_core, exports.qbx_core), the APIs diverge: state it and do not apply this skill blindly.

Hard Rules

• Acquire the core once with local QBCore = exports['qb-core']:GetCoreObject(); never call it inside every function.
• Player exists on the SERVER only (QBCore.Functions.GetPlayer(source)). QBCore.PlayerData exists on the CLIENT only, populated after QBCore:Client:OnPlayerLoaded.
• Always nil-check: if not Player then return end before calling any method.
• Money, jobs, gangs, items and metadata are mutated on the server through Player.Functions.*, never from the client.
• Pass a reason to AddMoney, RemoveMoney, SetMoney.
• Use state bags OR events for a given piece of state, never both.
• Validate every client-supplied argument on the server; never trust amounts, prices or item names sent by the client.
• Prefer ox_lib for notifications, menus, dialogs and progress bars.
• Use dynamic Wait() values in loops; avoid Wait(0) unless per-frame work is required.

Decision Gates

Execution Steps

1. Confirm qb-core starts before the resource; cache QBCore per side.
2. Decide the side: mutation and validation on server, display on client.
3. Fetch Player, nil-check, then validate every client-supplied argument.
4. Pick the call from Decision Gates; read the matching rules file for signatures.
5. Return data via callbacks, not paired events.

Output Contract

Return runnable Lua with the client/server split explicit, Player nil-checked, and reasons on money operations. Use ox_lib for UI unless the user asks otherwise.

References

• rules/core-concepts.md — architecture, PlayerData, Player object, events, state bags.
• rules/player-methods.md — Player.Functions money, job, gang, metadata, items.
• rules/best-practices.md — naming, caching, waits, state management, security.
• rules/reference-links.md — official QBCore documentation links.

Upstream docs: https://docs.qbcore.org