Structure FiveM ACE principals and groups with least privilege, stable identifiers, narrow capabilities, test accounts, and reliable staff offboarding.
ACE permissions are most useful when they express narrow capabilities through understandable groups. They become risky when every staff member inherits a broad admin principal, resource permissions are scattered across files, or deny rules are added without understanding inheritance. This guide focuses on principals, groups, and operational least privilege rather than anti-cheat configuration.
Security guard shack illustrating controlled access and permission boundariesThe image represents access-control context; permissions must be verified from configuration and behavior, not scenery.
A principal identifies a player or group. `add_principal` creates inheritance; `add_ace` grants or denies an object. Start by listing capabilities such as restart a resource, use a moderation command, manage bans, or access a development tool. Then assign capabilities to role groups. Map stable player identifiers to groups separately.
Avoid one “admin” group that grants everything. Support, moderator, senior moderator, developer, and owner can inherit deliberately, but higher roles should gain only necessary capabilities. Separate in-character job permissions from technical server administration.
Use the Permission Calculator to organize intended rules, and review server setup resources without copying unknown permission blocks.
Inventory current `add_ace` and `add_principal` lines, including files executed from `server.cfg`. Build a matrix of roles versus capabilities. Mark wildcard grants and unknown objects for review. Do not remove production access blindly; reproduce the model in staging.
Create base groups, then add specific capabilities. Add player identifiers to roles last. Test with separate accounts for no staff, each role, and owner. Check allowed commands, denied commands, inherited actions, console-only operations, and reconnect behavior. Use the server.cfg tools to inspect organization, then retain your own review process.
Keep permissions near a documented source of truth and avoid several resources silently granting the same capability. For custom scripts, check ACE server-side before sensitive actions; a hidden menu is not security. The script compatibility checklist helps identify resources with their own role systems.
Test permissions as transitions, not static snapshots. Promote a test identity, reconnect, move it between inherited groups, remove the mapping, and verify access disappears everywhere expected. Repeat while the player is online if runtime changes are supported. Check cached menus and framework roles separately: an ACE revocation must not leave a custom resource trusting a stale client-side staff flag.
Build negative tests for each sensitive capability. A moderator should be denied owner resource controls, an in-character police role should be denied technical moderation, and a developer should not automatically gain ban or economy powers. Invoke the underlying server event or command directly as the test identity rather than relying on hidden UI. Record the effective principal chain and exact object checked so failures can be traced without granting broader wildcards.
Define an emergency-access procedure with a narrow group, named approver, reason, start time, expiration, and review. Prefer a temporary capability over assigning the permanent owner group. After the incident, remove the mapping, reconnect the test identity, verify denial, and review command or resource logs. Emergency access that is easy to grant but never demonstrably revoked becomes permanent privilege.
Recovery testing should include malformed config, a missing executed permissions file, resource restart, and identifier-provider changes. Keep a console-level recovery path controlled outside normal player groups, but do not solve every error by adding `command` or wildcard grants. Restore the last reviewed configuration and compare the resulting role matrix before reopening staff access.
Use approval criteria that prioritize explainability. A reviewer should be able to select a person, follow group inheritance, list effective sensitive capabilities, and identify where each grant is defined. If that cannot be done quickly, simplify the graph. Schedule recurring reviews for dormant accounts, temporary grants, wildcard objects, duplicated rules, and resources that introduced new ACE names after updates.
A new moderator can run owner commands. Trace group inheritance and wildcard objects. Test the exact principal with an explicit permission check.
A grant appears ignored. Confirm identifier format, config execution order, spelling, reconnect requirements, and whether the resource checks ACE or its own framework role.
A deny produces surprising results. Simplify inheritance and understand how the effective permission is resolved before adding more rules.
Permissions vanish after restart. Ensure the correct config is executed and player identifiers are stable; runtime-only commands are not durable configuration.
A resource trusts a client menu. Move authorization to server handlers and validate the requested action and target.
Former staff retain access. Maintain immediate offboarding that removes mappings, rotates related secrets, and verifies with a denied test.
Least privilege is an operating practice, not a one-time config. Keep the graph understandable, test denials as carefully as grants, and remove access when responsibility ends.
Written by
xFiveM Shop Editorial Team
Questions? Browse our products or contact us
