cad-agent-foundation

CAD Agent Foundation is an agent-first AutoCAD MCP and CLI built on the native .NET API. It supplies small, reliable, controlled CAD primitives with truthful feedback so the agent can act and move forward: a 25-operation catalog covering bounded 2D model-space geometry, native views and captures, proxy and compound geometry reads, text reads, raster-reference repair, and drawing identity. The current field release is 1.2.0-beta.3.18, which adds local CTB controls, transient window PDF output and field reliability fixes. The MCP bridge derives from Bimwright DWG MCP, pinned at a stated commit with its Apache-2.0 licensing preserved.

Sessions start from a working copy and never overwrite the source drawing; omitting --write makes a session read-only. The CLI installs, starts, checks, applies a plan, saves and stops a workspace, and save affects the entire working drawing, including other unsaved edits in that instance. The validated host is AutoCAD 2026 on .NET 8 (inspected on R25.1.74.0.0); compatibility with the AutoCAD 2026.1.2 .NET 10 transition is not yet validated in the repo.

Scope is deliberately bounded: plans write bounded 2D model-space geometry in raw drawing units with no projection or unit conversion, and this release does not provide MLeader, general old-hatch repair, Booleans, holes, arbitrary polyline properties, cross-drawing copy, layout and plotting, engineering decisions, or automatic recovery of uncertain writes. Two optional companion Skills (cad-callout-pair-layout and cad-distress-annotation) add road callout and distress rules, but they are not required for basic operations and do not add missing native operations.