OrcaSlicer MCP server

This is a helper that connects your AI assistant to a running copy of OrcaSlicer, the 3D printing slicer. You ask in plain words, and the assistant loads models, changes settings, slices, and reads the results back. It is handy if you already use OrcaSlicer and want a hand with the fiddly parts.

What this MCP server does

You ask your AI something like load a model or slice this plate. The AI passes that request to this helper program. The helper talks to your running OrcaSlicer and makes the change or runs the slice. Then it reads the result back, like print time, filament used, or warnings, and tells you in the chat. You can watch every change land in the OrcaSlicer window as it happens.

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What you can do with it

• Load a model file onto the plate and arrange it
• Change any of about 800 slicer settings
• Slice the plate and report print time and filament use
• Compare several settings variants side by side
• Explain what a setting actually does
• Check whether a profile breaks your printer's limits
• Render a picture of the plate or the sliced toolpaths

Try asking your AI

• “Load benchy.stl, slice it with the current profile, and tell me the print time.”
• “What does layer height actually cost me? Compare 0.3, 0.4, 0.5 and 0.6 mm.”
• “Which feature is eating most of the print time on this plate?”
• “Check my profile for anything that would break my printer's limits.”

What it gives back to you

You get answers in the chat: numbers like print time and filament weight, a table breaking down time per feature, warnings, or a short sentence describing how a part sits on the plate. It can also hand back a PNG picture of the plate or the sliced toolpaths. When you ask it to change a setting, it tells you what it changed.

Before you start

Who it's for

People who already use OrcaSlicer for 3D printing and want help tuning settings, comparing options, or understanding slice results.