FFlags and dump files
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A dump is more than the offsets header. Every file below can exist in either tier; which ones a particular build has depends on what its dumper produced, and the files list says exactly.
| File | Kind | What is in it |
|---|---|---|
offsets.hpp | offsets | The offsets as a C++ header — the format most externals include directly. |
offsets.json | offsets | The structured source. Carries the dump's own description: total count, dump time, dumper name and version, and the build it belongs to. |
offsets.cs | offsets | The offsets as a C# class. |
offsets.txt | offsets | A flat table, for reading or grepping. |
offsetshex.json | offsetshex | The same JSON with every value written in hexadecimal. |
struct.hpp | struct | Class and structure layouts, as C++. |
types.json | types | The type of every offset, keyed like offsets.json. |
fflags.hpp | fflags | Fast flags and their addresses, as a C++ header. |
fflags.json | fflags | Fast flags as JSON, decimal values. |
fflags.cs | fflags | Fast flags as a C# class. |
fflags.txt | fflags | Fast flags as a flat table. Not every dump has it. |
fflagshex.json | fflagshex | Fast flags as JSON, hexadecimal values. |
A verified upload may also carry files of its own — any plain name ending in
.json, .hpp, .h, .cs, .txt,
.lua, .py or .rs — listed with kind extra.
Unpacked client binaries are never stored as offsets files, whatever an upstream listing
carries.
What a build has
curl -s https://rbxoffsets.com/api/v1/windows/offsets/latest/files
curl -s "https://rbxoffsets.com/api/v1/windows/offsets/version-c5aecda2245e4fae/files?tier=default"Fetching one
# the four offsets formats keep their short form
curl -sLO https://rbxoffsets.com/api/v1/windows/offsets/latest/hpp
# any file by name, in whichever tier is served
curl -sL -o struct.hpp https://rbxoffsets.com/api/v1/windows/offsets/latest/struct.hpp
# FFlags have a shorthand
curl -sL -o fflags.json https://rbxoffsets.com/api/v1/windows/fflags/latest/json
# one exact tier
curl -sL -o fflags.hpp https://rbxoffsets.com/api/v1/windows/offsets/version-c5aecda2245e4fae/default/fflags.hppSize
The offsets files are tens of kilobytes. The FFlags files are around a megabyte each, which is why an operator can choose not to mirror them — in which case they are simply absent from the default set's file list, never an error.