Cordyceps: MCP server for Grasshopper (Win / Mac)

I’ve been doing a bunch of work in C# scripting and got tired of copy/paste into GH script components, so I had Claude build an MCP server that allows automating updates to script components.

Then I got totally carried away and ended up with a general purpose MCP server that’s useful for natural language automation via any AI tool that supports MCP, as well as more traditional scripting from outside Rhino/Grasshopper (my original goal).

I’ve tried very hard to optimize for teaching LLMs how to use grasshopper rather than having exhaustive lists of special cases. It seems to work pretty well, though Claude at least doesn’t always build things the way I would.

Github link w/ GHA and instructions

I’m sure there are issues, don’t turn it loose on your only copy of your PhD project, etc. Feedback welcome and appreciated, here or in Github issues.

Hello Brooks

Thanks a lot for this MCP server script components.

It works perfectly for me, 1000 thanks a lot
Elmar