Kernelcad
Give your agent editable KernelCAD `.kcad.ts` models, deterministic review, and OpenCASCADE-backed geometry tools while you prototype hardware or CAD-backed products.
Overview
KernelCAD is a MCP server for the Build phase that lets agents edit `.kcad.ts` CAD source with OpenCASCADE geometry and deterministic review.
What is this MCP server?
- Agent-first CAD with editable `.kcad.ts` source and deterministic review loop
- OpenCASCADE kernel for solid modeling operations
- Dual access: npm stdio package `kernelcad` v0.11.2 and remote streamable-http at https://mcp.kernelcad.com/mcp
- Published under server schema 2025-12-11
- Open-source repo: github.com/w1ne/kernelCAD-web
- Server and npm package version 0.11.2
- 1 remote endpoint (streamable-http) plus 1 stdio npm package
- OpenCASCADE kernel explicitly named in server description
Community signal: 6 GitHub stars.
What problem does it solve?
Agent-assisted hardware ideas stall when CAD stays in closed GUI tools the model cannot read, review, or version like application code.
Who is it for?
Solo builders prototyping parts, mounts, or CAD-integrated features who want MCP-driven `.kcad.ts` workflows with local npm or hosted HTTP.
Skip if: Teams that only need 2D marketing assets, or production machining pipelines that require full PLM and no agent-edited geometry.
What do I get? / Deliverables
After connecting KernelCAD MCP, your agent works on text-based CAD sources with kernel-backed operations and a repeatable review path before you export or manufacture.
- Agent-manipulable `.kcad.ts` CAD projects with kernel operations
- Deterministic review workflow before manufacturing or export
- Choice of local stdio or hosted https://mcp.kernelcad.com/mcp endpoint
Recommended MCP Servers
Journey fit
CAD authoring and agent-driven design iteration belong in Build when you are producing real artifacts, not just researching markets. Agent-tooling is the right shelf because the server is built for agent-first workflows rather than a human-only desktop CAD session.
How it compares
Agent-first parametric CAD MCP, not a generic 3D mesh generator skill or cloud-only drawing API.
Common Questions / FAQ
Who is KernelCAD for?
Indie builders and agent-heavy developers creating CAD-backed products who want OpenCASCADE modeling with editable TypeScript-style source files.
When should I use KernelCAD?
Use it during Build when you are iterating mechanical designs, fixtures, or CAD-linked features and want the agent to modify and review `.kcad.ts` models.
How do I add KernelCAD to my agent?
Add the npm package `kernelcad` with stdio transport, or configure the remote MCP URL https://mcp.kernelcad.com/mcp with streamable-http, per your host’s MCP docs.