MSMP World
by Loat.dev
MSMP World extends the Minecraft Server Management Protocol on Fabric servers with RPC methods for reading and setting world data.
What it does
Tools that drive a dashboard, automation system, map generator or external monitor can read and change world data through MSMP instead of parsing command output or relying on RCON workarounds. The mod provides its methods over the standard MSMP endpoint, and they are discoverable through rpc.discover. Management Server is enabled in server.properties and listens on localhost:25576 by default, so a server must start with it turned on before the methods can be called.
Requires Fabric API. Only the server needs the mod: players join without installing anything. Source code and the issue tracker are public. MSMP World is open source under the GNU Lesser General Public License v3.0 only and has Fabric files for 26.1 – 26.2, with 0.2.2 for 26.2 as the latest build. Other catalog mods that add MSMP methods include MSMP Enhanced and MSMPlus.
Key features
Block lookup by position
A method returns the block id, its states and any block entity data for a given position. Omitted states fall back to the block's defaults.
Block placement with confirmation
A method sets a block at a given position and returns the state it holds after placement, matching vanilla setblock behavior.
Compact surface scans
A method returns the surface block of each 16×16 chunk column, using a shared palette so repeated block descriptions are sent once.
Sentinel values for empty columns
Columns with no block, such as at the world edge, carry a fixed minimum integer height and a -1 block index, and block entities appear as a sparse list.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Map generators
Tools that build or export terrain can read surface heights and blocks per chunk in a compact form.
External monitoring
Dashboards can query block states and block entity data without issuing commands.
Who it’s for: Server owners who run dashboards, automation or external tools against a Fabric server and want structured access to world data.
How it compares
MSMP Enhanced is also server-side only and open source under the GNU Lesser General Public License v3.0 only, but it targets 1.21.9 – 26.3. MSMPlus is server-side only and published for 1.21.9 under the MIT License, which is not open source. General Custom Data is open source under the GNU General Public License v3.0 or later, with files for 26.1 – 26.1.2, and it works on either side, and neither needs it.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| MSMP World | Fabric | 26.1 – 26.2 | Server-side only | 2026-07-12 |
| MSMP Enhanced | Fabric | 1.21.9 – 26.3 | Server-side only | 2026-09-15 |
| MSMPlus | Fabric | 1.21.9 | Server-side only | 2025-10-09 |
| General Custom Data | Fabric | 26.1 – 26.1.2 | Client or server, optional | 2026-05-21 |
Questions
Does MSMP World need Fabric API?
Does a player need to install MSMP World?
How is Management Server turned on?
In the catalog
MSMP World is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 13,894 mods support Minecraft 26.2.
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What the author says
A server-side Fabric mod that extends the Minecraft Server Management Protocol (MSMP) by providing additional functions for getting and setting world data. This mod is designed for tooling, dashboards, automation systems, map generators, external monitoring tools, and integrations that need structured access to world…
Official listing
- Modrinth page
- modrinth.com/mod/msmp-world
- Owner
- Loat.dev
- Published
- 2026-04-19
- Updated on Modrinth
- 2026-07-12
- Facts verified
- 2026-10-15