compare_before_after
Capture → edit → capture, with pixel-change metrics
How to use it
compare_before_after is exposed by the Rhino MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the compare_before_after tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.
FULL RHINO MCP LISTINGOther tools in Rhino MCP (18)
Post-condition contracts — bbox, envelope, count, countdelta, watertight, supported
Hero, plan, elevations and detail in one multi-image call
Lift/stair/shaft core, with punchthrough to carve real voids
Universal create: wall, slab, column, opening, roof, massing, core + primitives
Section a massing solid at floor heights into real slabs (variable storey heights)
Real clash detection: RTree broad phase + Brep–Brep narrow phase
CPython 3 via RhinoCode (Rhino 8.11+, Developer mode)
IronPython 2 inside Rhino, with rab auto-imported
Objects floating with nothing beneath them
123
~21
Live plugin dispatch table (never drifts from the code)
Health check — Rhino version, units, sceneversion etag, and which script engines are actually available
A whole facade of openings in one call
Universal query: filter by type, layer, name, bbox; columnar format saves 40–60% tokens
Instant interior inspection at any station; no permanent geometry
"all south-facing windows on level 3"
Corruption vs. intentional open shells, scoped by layer / name / sinceversion