TellMe
by masa
With TellMe, a command prints the blocks, biomes and registry entries a world holds, for mod pack makers and developers who need technical game data.
What it does
TellMe is an informational mod that adds commands for dumping game registries and listing loaded entities, block entities, chunks and dimensions. It also counts blocks and biomes in a given area, samples biomes on a grid to find the closest location of a unique biome, and prints information about the block or item a player holds, including its NBT data. Output can be written in JSON format.
Pack builders and developers who need technical details about the game, such as registry contents, are the audience this mod is written for. Since version 1.14.4 the commands are top-level and run on the server side, so the mod must be present on a server, either single-player or a dedicated one, for most arguments to work. Clients need it for command suggestions and completions, which is why it is listed as client and server. Version 1.14 and later also recommend using command suggestions to see a command's usage. In 1.12.2 and earlier, the commands were client-side and worked without a server copy.
Key features
Registry dumps
Dump commands write registries and other game data to output, with a tip in-game about the dump command and one-time runs for each type.
Area counting
Counts blocks and biomes inside a given area, so a region can be checked without reading it by hand.
Biome sampling
Samples biomes on a grid and reports the closest location of a unique biome from the player's position.
Held item inspection
Prints information about the item in the player's hand, including its NBT data.
Compatibility
Latest build for each game version and loader.
1.20.x4 of 4 versions with builds
1.19.x4 of 4 versions with builds
1.18.x3 of 3 versions with builds
1.17.x1 of 1 version with builds
1.16.x6 of 6 versions with builds
1.15.x1 of 1 version with builds
1.14.x1 of 1 version with builds
1.12.x3 of 3 versions with builds
1.11.x3 of 3 versions with builds
1.10.x3 of 3 versions with builds
1.9.x2 of 2 versions with builds
1.8.x10 of 10 versions with builds
1.7.x1 of 1 version with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Pack builders, mod developers and players who need technical data about the game, such as registry contents, rather than gameplay additions.
How it compares
Registry Dump is server-side only, with files for 1.19.2 – 1.21.1, and uses a custom license that is not open source. Structure Dump is also server-side only, covers 1.20.1 – 1.20.6 on Forge alone, and is open source under the GNU Lesser General Public License v3.0 only. TellMe is client and server, open source under the same license, and covers 1.7.10 – 1.20.4 across Fabric, Forge and LiteLoader.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| TellMe | Fabric, Forge and LiteLoader | 1.7.10 – 1.20.4 | Client and server | 2024-07-23 |
| Registry Dump | Fabric, Forge and NeoForge | 1.19.2 – 1.21.1 | Server-side only | 2026-10-06 |
| Structure Dump | Forge | 1.20.1 – 1.20.6 | Server-side only | 2025-11-20 |
Questions
Does TellMe need to be installed on the server?
Which loaders can run TellMe?
Can the registry dump output be saved as JSON?
In the catalog
TellMe is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 13,907 mods support Minecraft 1.20.4.
More from masa
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What the author says
TellMe is an informational mod for Minecraft. It is primarily meant for mod pack makers, mod developers or other users who need some technical information about the game, such as various game registry dumps. It has various commands for dumping registries, for listing loaded entities/block entities/chunks/dimensions…
Official listing
- Modrinth page
- modrinth.com/mod/tellme
- Owner
- masa
- Published
- 2023-04-17
- Updated on Modrinth
- 2024-07-23
- Facts verified
- 2026-10-15