GhostClient

Open-source Roblox FFlag tool with dynamic offset support.

Offsets are fetched automatically from the API — no hardcoded values, always up to date.

Requirements

• Windows 10/11
• Visual Studio 2019+ with C++ Desktop Development workload
• CMake 3.20+
• Git (for cloning with submodules)

Build

git clone --recurse-submodules https://github.com/GetGhostClient/GhostClient.git
cd GhostClient
mkdir build
cd build
cmake .. -G "Visual Studio 17 2022" -A x64
cmake --build . --config Release

If you already cloned without --recurse-submodules, run:

git submodule update --init

The compiled ghostclient.exe will be in build/Release/.

Usage

1. Launch Roblox first
2. Run ghostclient.exe (as Administrator for memory access)
3. Go to Process > Attach to Roblox (should auto attach)
4. On first run, offsets are downloaded automatically in the background
5. Use the FFlag Browser tab to search and read/write individual flags
6. Use the Injector tab to paste a list of flags or load from file
7. Use the Presets tab to save/load flag configurations

Dynamic Offsets

GhostClient fetches FFlag offsets at runtime from the API instead of shipping a hardcoded list.

• On first launch, offsets are fetched automatically in the background
• Once downloaded, they are cached locally at %LOCALAPPDATA%\GhostClient\fflag_cache.hpp
• The cache is loaded automatically on every subsequent launch
• Use Settings > Check Version to see if a newer version is available
• Use Settings > Update Offsets again any time Roblox updates

Offsets sourced from imtheo.lol/Offsets.

Injector Formats

Text format (one per line):

FlagName=value
AnotherFlag=true
SomeNumber=42

JSON format:

{
    "FlagName": "value",
    "AnotherFlag": true,
    "SomeNumber": 42
}