Changelog

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1.1 — September 2026

Added

  • Upcoming builds on every platform. /api/v1/upcoming, /api/v1/{platform}/upcoming, upcoming.txt and /api/v1/{platform}/channels, plus an Upcoming row on every platform page. See Upcoming builds.
  • Offset tiers. Verified and default sets per build, ?tier= on every offsets route, /offsets/{version}/{tier}/{file}, and the x-offsets-tier header. See Offset tiers.
  • Every file in a dump, not only the four offsets formats — FFlags, struct and type files, hex JSON — and /api/v1/{platform}/fflags/{version}/{format}.
  • /api/v1/{platform}/builds/{version}, /api/v1/events, /api/v1/{platform}/manifest/{version}, version.txt.
  • /api/v1/openapi.json, and Atom feeds at /feed.xml and /{platform}/feed.xml.
  • Extra Windows packages at /download/windows/{version}/{package} when the operator keeps them.
  • sources on /healthz.
  • Operator routes to withdraw and restore a set, flag an upcoming build, and mirror on demand.
  • Event types upcoming, upcoming_withdrawn and offsets_verified.

Changed

  • /api/v1/{platform}/offsets/{version}/{format} now serves the verified set when one exists. It used to serve the only set there was. ?tier=default restores the old behaviour exactly, and x-offsets-tier says which was served.
  • Offsets JSON gained tier, availableTiers, dumper, verifiedBy and friends. Each file entry gained file and kind; format is now the extension.
  • macOS offsets answer a real listing as soon as a verified set exists, instead of always 501.
  • 400 unknown_format is now 400 unknown_file, and 404 format_not_found is now 404 file_not_found.
  • Uploads accept any file on the list, text fields describing the set, and bodies up to 16 MB.
  • The bucket moved under (root)/. See Storage layout.

Deprecated

  • The bucket's top-level latest.json, outside the new folder. Read the one inside it.

1.0 — August 2026

Windows, macOS and Android tracking; stored client packages; offsets mirrored for Windows and uploaded for Android; the archive with a page per build.

The index at https://rbxoffsets.com/api/v1 always lists what this server answers today.