cad-agent (Valpatel)
Agent setup for designing physical objects: it helps an AI assistant find a method, build the model, check the assumptions and keep the evidence for review.
Summary rewritten from the vendor site because the catalog version did not match it.
What it does and how it connects
cad-agent is a self-improving AI setup for designing physical objects, built from open source projects. Give an AI assistant a design task and cad-agent helps it find a method, build the model, check the assumptions and keep the evidence for review. It installs into Claude Code, Codex, Copilot CLI, Cursor, Gemini CLI and opencode, collects no telemetry, and sends a learned lesson back as a pull request or an issue only if the user says yes.
Guides cover CAD, assemblies, mechanisms, PCBs, manufacturing and simulation, with a research section of surveys, rule cards, decisions and sources, and skills for design, hardware, motion and review workflows. What works today, per the README, is parametric parts, bought-hardware models, assemblies and project builds, geometry, fastener, motion, snap-fit and manufacturing checks with recorded evidence, structural and thermal predictions, design trade-offs, and slicer time and mass, plus 3D review sites, section review packets, and STEP, STL and 3MF exports.
The improvement loop is the point: when a real design exposes a gap, the project searches existing work, reproduces its examples, encodes what survives in engineering code, and keeps the failed case as a regression test. The README is explicit about evidence limits: CAD and simulation check a model's assumptions, while physical fit and strength need physical tests.
Alternatives
Compare side by side- VibeShape
A local-first browser CAD for parametric sketch to B-Rep solid to print, rather than an agent skill set for CAD design and review.
- partforge (pixiteapps)
Turns a part description into a shareable parametric web app, rather than a skill set that improves itself from design evidence.
- cadquery-mcp-server
An MCP server that exposes CadQuery modeling to AI assistants, rather than a skill and guide library for CAD work.
- Text2CAD
A research model that generates CAD from text prompts, rather than guiding an agent through a design workflow with checks and evidence.
Recurring errors it addresses
Error Index entries this tool is built to reduce or work around.
- Since OCCT 7.7.0, spherical or toroidal STEP faces with a clockwise outer boundary import as the complement of the bounded patch: 18 spherical faces on a Pro/ENGINEER model grew from 693.8 to 42,569.7 mm2 while BRepCheck_Analyzer calls every face valid. A shape-healing heuristic mistakes the explicit outer boundary for a hole.Error Index
- A STEP export from SolidCraft lost the side faces on 3 of 4 tapered legs when opened in other CAD tools, leaving only end discs. SolidCraft read its own file back fine; the fault was which ring of the cone face the loop started on, which other readers depend on.Error Index
- SolidWorks to Fusion to STL on macOS produced non-manifold meshes (jaw_soft showed 91 non-manifold edges); OrcaSlicer's auto-repair fixed them, but the user worried the auto-repair changed the fit, and asked for STEP files.Error Index
Sources
Not verified
- Pricing: none stated on the repo.
- Real user voices: no real linked post read for this page; the only recent issue read is the maintainer's own release issue.
- The catalog one-liner describes source bound checks for reports, BOM data and qualification gates; that wording was not verified in the README read, so the one-liner was rewritten from the README.
- The catalog software tags (kicad, validation, bom, review, qualification) name no software the README states, so software was cleared with a note.
- A named individual builder beyond the repository owner handle Valpatel
Last verified November 6, 2026. Listings are informational. The evidence score measures public, verifiable evidence and is not an endorsement or a compatibility claim.