
Surveyor Map Framework
Maps with friends! A world map backend with multiplayer sharing, automatic structure/POI marking, and unified mod compatibility.
Screenshots






About this Mod

An open-source backend (and API) for co-op-enabled world map and waypoint mods!
Requires Connector and FFAPI on (neo)forge.
Surveyor is the backend for map mods like Antique Atlas 4, Hoofprint, and Dead Reckoning.
When installed client-side, Surveyor allows you to:
- View explored terrain and mark points of interest with waypoints
- See on-map landmarks for other mods via compatibility addons, like for Waystones and OPAC
- Swap map frontends at any time, retaining all map data
- Automatically migrate waypoints directly from an existing Xaero's Minimap save
When installed on both sides, Surveyor allows you to:
- Explore map terrain and edit waypoints in co-operative groups (server-wide by default)
- See other players on your map, even far away or in other dimensions
- Swap instances or computers, with your map data restored from the server
- Use op commands to create server-wide landmarks for POIs like spawn, shops, warp hubs, etc.
- Copy exploration from and to vanilla maps by sneak+using a cartography table (style configurable)

As a mod developer, Surveyor allows you to:
- Create pure map frontends by handling all map data itself - terrain, structures, and waypoints
- Create addons for custom on-map landmarks, with a flexible component-style data system
- Create any kind of frontend - server-optional, ingame/mixed-side, external/browser-based, etc
- Utilize the waypoint system on its own, for small, lightweight waypoint/compass mods
Configuration
Surveyor can be configured via config/surveyor.toml, McQoy, or QoMC. Most changes require a restart.
- Disable server-wide co-op by setting
globalSharing=false(recommended for public servers) - Tweak what data is synchronized between players, groups, and the server in the
Networkingsection - Toggle builtin automatic waypoints (e.g. nether portals, grave markers) in the
Builtinssection
Commands
Surveyor can mostly be interacted with via map frontends, but comes with a few useful commands:
- When
globalSharing=false, use/surveyor share/unshareto form groups to share waypoints and map data - Use
/surveyor,/waypoints, and/landmarksto review your waypoints and explored map data - Use
/waypoints new/removeto create/edit custom waypoints (e.g. if a frontend is not installed) - Use
/landmarks new/remove(op 2) to create/edit operator-level global waypoints (e.g. for server spawn)
Troubleshooting
Report any unique replicable issue to the issues page with logs, screenshots, and replication steps where possible.
Client data is stored in .minecraft/data/surveyor/[world]/[dim], singleplayer/server data in [world]/[dim]/data/surveyorc.X.X files contain terrain regions, s.X.X files contain structures, and landmarks.dat contains waypoint data.
When encountering issues, you might like to try any of the following:
- Backing up the affected data and deleting it (e.g. for a structure-related error, wipe structure data)
- Disabling networking for a subsystem (e.g. for a terrain packet client kick, set
networking.terraintoNONE) - Disabling a subsystem (e.g. for extreme server memory usage, set
terraintoDISABLEDon the server)
Contributions / Addons
Feel free to reach out if you'd like to develop something with surveyor - or just go for it! We appreciate:
- PRs making shots at surveyor enhancements and bugs
- PRs containing ports to an older established versions (1.4.7, 1.17.10, 1.12.2, 1.16.5, 1.18.2) - or latest, per policy
- PRs containing API features that you'd benefit from - ideally post an issue first, and we can workshop it
- Compat addons, world maps, minimaps, and waypoint frontends utilizing surveyor!
Check out the frontend dev guide for a breakdown of the complicated parts of the internals.
Licensing / Credit
Please match your addon licenses to LGPLv3 if possible - it helps improve the surveyor ecosystem!
(LGPLv3 is a copyleft license, so this is required for anything directly adapted from Surveyor)
If you've written something, hit us up and we might link it here! We'll also answer questions for in-progress projects.
Devs can reach out on mastodon or via email.
Afterword
Surveyor was built on the thoughts, advice, opinions, and past works of many modders in the community.
Thanks to everyone who helped make this project happen, even just by fluttering on the sidelines - it means a lot.
We made surveyor because it sounded cool - we hope it helps other artists/modders to make cool things!
Available Versions
How to Install Surveyor Map Framework on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (26.1.2).
Install Mod
Open the mod browser in the dashboard and search for "Surveyor Map Framework". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
26.1.2, 1.21.8, 1.21.1 (+1 more)
Server-side
~ OptionalRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Surveyor Map Framework server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.1.2). You can switch loaders with one click in the panel.
Is Surveyor Map Framework compatible with fabric and forge and neoforge and quilt?
Surveyor Map Framework officially supports fabric, forge, neoforge, quilt for Minecraft 26.1.2, 1.21.8, 1.21.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Surveyor Map Framework – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Surveyor Map Framework consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install Surveyor Map Framework with just one click on your server.