ShadowTrace

ShadowTrace lets administrators inspect ore mining activity through CoreProtect data. Players can look at historical mining, see the exact coordinates of each mined block and filter lookups by timeframe, such as 1m, 1h or 1d. Each block type gets its own outline color, and a single search can display up to 300 blocks. The outlines are drawn in the 3D world, so staff can compare the pattern of mined ore against normal play and look for signs of x-ray use.

The client renders the highlights, while the ShadowTrace server plugin handles the data queries and sends the results to the mod through a custom packet system. The two parts keep logic separated: the server does the processing and the client focuses on display. Together they serve moderation and anti-cheat work on Minecraft servers. The mod works for players who are online and for those who are offline. Watson is a similar tool that covers more ground, while ShadowTrace only shows blocks that players mined. Colors can be changed in the configuration file, and a restart of the Minecraft client is needed for the change to take effect.

ShadowTrace is open source under the GNU Lesser General Public License v3.0 only. Its files target Fabric and are published for 1.21.5 – 26.3 across 11 release versions. It requires MaLiLib, and it runs on the client alone, so the server does not need the mod itself, but the ShadowTrace server plugin must be present for the lookups to work.