Zdexby TheHolyOneZ
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About Zdex

A public index of Unreal Engine reflection dumps, built and run by one person.

Zdex is a public index of Unreal Engine reflection dumps — the place where a dump lives once it leaves your machine. Every published dump is one game at one build: its classes and structs with member offsets and sizes, its enums with values, its functions with parameters and native addresses, and the engine offsets the dumper derived along the way. You can search across all of it, follow any type reference, compare two builds of the same game to see what moved, and download the whole thing as .usmap or a C++ SDK.

I am TheHolyOneZ. I also write Zircon, so Zircon is the dumper Zdex is built around and the one with the smoothest path in (zircon dump --publish). It is not the only one: the dump format is open and documented, and any tool that writes it is welcome here.

Where the data comes from

Zdex never touches a game. Everything on the site was uploaded by a user who ran a dumper against a process on their own machine. The uploaded JSON is imported into a per-dump search index, reviewed, and only then made public. The original file is kept so a dump can be re-indexed or exported later.

Publishing a dump

  1. Run zircon dump --pid <pid> -o game.json while the game is running (add --defaults for class default values), or produce a file in the Zdex format with the dumper of your choice.
  2. Create an account, verify your email, and upload the JSON (plain, gzip or zip). Large files upload in chunks and resume if the connection drops. Or do it from the terminal with zircon login and then zircon publish game.json --label "1.4.2", which is the same path through the same API.
  3. The importer indexes it in the background. Once I have approved it, it appears under its game.

What Zdex is not

It is not a cheat and it does not distribute game files. A reflection dump is structural metadata the engine itself exposes at runtime: names, offsets, sizes, flags. It contains no assets, no code and no protected content. Dumps are published for research, modding and interoperability. If you own a game and want its dump removed anyway, the takedown form reaches me directly.

Contact

Questions, bugs or ideas: the contact form on zsync.eu. Zircon itself is developed on GitHub.

Part of a family

Zdex lives on zlogic.eu, next to the mod-menu catalogue and Zircon. The rest of what I build — desktop utilities, gaming tools, dev helpers — is collected on zsync.eu. Same person, same standards, one account per site.