Mcp Stl

This server gives Claude direct access to STL 3D model manipulation through numpy-stl. It exposes 30+ tools split across reading and writing meshes, applying transformations like translate, rotate, scale, shear, and mirror, generating geometric primitives from cubes to tori, and creating specialized mechanical components like spur gears, crankshafts, and cam lobes. You'd reach for this when you need to programmatically generate or modify 3D printable parts without opening CAD software. The transformation tools support both simple operations and advanced ones like arbitrary axis rotation and circular arrays. All operations work with both ASCII and binary STL formats, making it straightforward to build parametric model generators or batch processing workflows.