Crucible
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Crucible Local Agent

Type or say what you want. It opens your apps, builds maps in Heightmap and Creator, runs your server and knows Rust.

Download Crucible What it can do
Local Agent

make me a mainland map and generate the world

Opened Crucible Heightmap

Made a mainland map

Generated the whole world

now generate a 4000 map in Creator and check it

Opened Creator

Generated a 4000 map

Checked it, no problems

put it on a server called Test and start it

Made the server Test

Loaded the map

Started it, it is live

how much sulfur for one C4

2,200 sulfur, all of it in the 20 explosives.

join it

Opened Rust and joined Test

Ask about Crucible, Rust maps or servers


Already use Claude, Codex or Cursor? Crucible has its own MCP for the whole family. Press Connect and your AI app drives Crucible, Crucible Heightmap and Crucible Local Server. Creator has its own Connect, so it can generate and check maps there too.

  • Press Connect, done

    Press Connect next to your AI app in the Agent tab and restart it. That reaches Crucible, Crucible Heightmap and Crucible Local Server. Creator has its own Connect in its Preferences.

  • Built for big jobs

    Bigger AI apps plan long jobs on their own. One ask can build a map, generate the world, export it and start it on your server.

  • It still asks first

    Anything permanent waits for your Allow in Crucible, and Creator shows a Confirm card before any change. It never sees your license key or passwords.

  • Any app with MCP

    Not on the list? Copy setup and paste it into any AI app that runs MCP servers, or hand it to the AI and let it add Crucible itself.

Works with
  • Claude Code
  • Claude Desktop
  • Cursor
  • VS Code
  • Codex
  • Antigravity
  • Windsurf
  • Gemini CLI
  • LM Studio
  • Any app with MCP
Crucible Local AgentBuilt in, free


The free agent built into Crucible. Ask for a few things in one line and it does them in order.

Crucible

  • Open, close, install and update your apps
  • Change settings and check for updates
  • Show you where anything lives

Crucible Heightmap

  • Start a new map and move sliders by name
  • Build the world, ramps and channels
  • Save projects and seeds, undo and redo
  • Export the finished map

Creator

  • Generate a new map from a size and seed
  • Check a map for problems before a server loads it
  • Save the map, or tell you what is open

Crucible Local Server

  • Set up, start, stop and restart servers
  • Run console commands, see who is on
  • Backups, wipes, plugins and maps
  • Put your newest map on a server

Console commands, server variables, item names, recipes and prefab paths.

what is the prefab for a large wood box

assets/prefabs/deployable/large wood storage/box.wooden.large.prefab

how much sulfur for a rocket

1,400 sulfur, counting the gunpowder and the explosives.

make the mountains taller

Done. Mountains raised in Crucible Heightmap.

where do I cancel my plan

Open Account in Crucible and cancel it there. You keep it until your paid time runs out.

wipe the map on Test but keep blueprints

Wipe the map on Test and keep blueprints? Allow or Deny.

The voice comes with the same install. Pick one of ten voices and set its speed.

  • Answers read aloud

    Turn on read-aloud and every answer is spoken as it is written.

  • Speak instead of type

    Press the mic and talk. It sends what you said on its own.

  • Hands-free

    Say "Hey Luna, start my server". Say "Hey Luna, stop" to cut it off. It listens even with Crucible minimized.


  • It never buys anything, never touches your plan, and never sees your license key
  • Deletes, wipes and restores always ask first with Allow or Deny
  • One Stop button refuses everything until you press Resume
Crucible, where the Local Agent lives in its own Agent tab


Crucible checks your graphics card and RAM and stars the one that fits. Switch any time.

Standard

about 1.2 GB download

Runs on your processor

The quickest one, and the one Crucible installs first.

Smarter

about 3.8 GB download

Graphics card, about 3.6 GB free

Better answers on bigger asks.

Best

about 6.5 GB download

Graphics card, about 5.9 GB free

The best answers, if your graphics card has room.

Questions

Local Agent docs Ask on Discord
Is the Local Agent free?

Yes. It is part of Crucible, and nothing installs until you press Install in the Agent tab.

Does anything I type leave my PC?

No. It runs on your PC and your chats stay there. An AI app you connect follows its own terms.

What PC does it need?

Any Windows PC runs the Standard model. Crucible checks your graphics card and stars the best one that fits. A switch keeps room free for Rust and the Crucible Heightmap in-game view.

Can it buy things or touch my plan?

No. It cannot see your license key, and buying, changing or cancelling a plan stays with you in the Shop and Account. It can show you where those buttons are.

Will it delete things without asking?

No. Deletes, wipes, restoring backups and uninstalling always ask first with an Allow or Deny card. Starting and setting up servers happens straight away, unless you switch on asking for everything.

Can it build a whole map for me?

Step by step, yes. It drives every step you ask for. For big multi-step jobs, connect a larger AI app like Claude Code or Codex from the Connect tab and it can use the same tools.

Will it get better?

Yes. The Local Agent is new and keeps improving with Crucible updates. For now it is best at a few steps at a time, so very long jobs may need breaking into smaller asks.

Does it slow Rust down?

It shares your graphics card with the game, so close Rust while you chat, or keep the room-for-Rust switch on.

Guides

Set up the Local AgentCrucible basics