KSP AI Bridge

A Kerbal Space Program 1 mod that lets an AI design rockets, launch them, fly them and land them for you. You talk to Claude; Claude plays the game, while you watch, ask it things, and take over whenever you like.

It is self-contained: no kOS, kRPC or MechJeb, and no API key (the AI is the Claude app, or a model you run on your own computer). A second download, the voice edition, adds a ship's computer that speaks and takes spoken orders.

Install

Needs KSP 1.12.x and Python 3.8 or later. From the download:

python3 install.py

Then start KSP, open a new Claude session in this folder, approve the ksp server and ask for something. Installing in full.

Things to ask

• "Build me a rocket that can reach orbit, and fly it there."
• "Design a crewed Mun lander that can get home again, then fly the whole mission."
• "Land next to my Mun base." / "Dock with the station." / "Send Valentina out to plant a flag."

You stay in charge

• Talk to it in the game: the AI Bridge panel has a box to Ask a question or Tell it to do something else.
• Never silent: it answers at once and says a line about every 20 seconds while it works. A switch turns that off.
• Pause AI refuses every further command until you press Resume. Take controls hands the ship back.
• The server listens only on 127.0.0.1, with a token that changes at every game start.

Good to know

• Flown with no human input: a Mun landing and return, landings within tens of metres of chosen coordinates on the Mun and Duna, docking, aircraft, rovers and an EVA. The whole list and the limits.

Works on

Mac: made and flown here. Windows 11: the plugin, the server, flights to orbit and back, and the voice edition's models were tried; what 0.7.0 added (never silent) on the Mac only so far. Linux: never run.

More: the long description (everything in full) and the rest of the wiki: the tools and autopilots, the voice edition, a model on your own computer.

Licence

CC BY 4.0: use it, change it and pass it on as you like, as long as you credit Ishiaki and link back here.

Developing

./build.sh check compiles, ./build.sh dev makes a hot-reload build that a running KSP swaps in within a second, ./build.sh release installs the normal one and ./package.sh makes the two downloads. More.