solidcraft
SolidCraft: an open-source parametric 3D CAD application built in pure Rust. Desktop, web, and automation through MCP.
Install / Use
claude mcp add tangency-labs -- npx -y github:tangency-labs/solidcraftIf the server publishes to npm under a different name, use that package instead — check the repo README.
MCP Server
Model Context Protocol server
Quality Score
Category
AutomationSupported Platforms
Our assessment of solidcraft
solidcraft scores 92/100 on our quality scale, 749th of 2,900 Automation skills we index (top 26%).
Its MCP Server is 24 KB long, well organised into 9 sections with 3 code examples: a thorough specification that gives an agent plenty to work with.
With 6,741 GitHub stars, it is one of the more widely adopted skills in the catalogue.
Maintenance, license and trust
- The repository was last updated today, so solidcraft is actively maintained.
- It is released under the Apache-2.0 license, a permissive license that allows use, modification and commercial use with attribution.
- Its trust signals score 100/100, with no cautions. These come from repository metadata, not a code audit — read the skill file before letting an agent act on it.
solidcraft compared with similar skills
All 4 of these similar skills score higher than solidcraft; compare them before choosing.
| Skill | Score | Stars | Updated | Format |
|---|---|---|---|---|
| solidcraft (this skill)by tangency-labs | 92 | 6.7k | today | MCP Server |
| Agent-Reachby Panniantong | 100 | 99.4k | 4d ago | CLAUDE.md |
| headroomby headroomlabs-ai | 100 | 76.0k | 2d ago | CLAUDE.md |
| CowAgentby zhayujie | 100 | 47.5k | today | CLAUDE.md |
| Scraplingby D4Vinci | 100 | 88.6k | today | MCP Server |
Frequently asked questions
- How do I install solidcraft?
- Run
claude mcp add tangency-labs -- npx -y github:tangency-labs/solidcraft. The install tabs above show the steps for each supported agent. - Which AI agents does solidcraft work with?
- It is written for Claude Code and Claude Desktop, as a MCP Server file. Other agents that read the same format can often use it too.
- Is solidcraft safe to use?
- It is Apache-2.0-licensed and scores 100/100 on trust signals. Skills are instructions an agent will follow, so read the file before installing it and do not approve commands you do not understand.
- Is solidcraft still maintained?
- The repository was last updated today, so solidcraft is actively maintained.
Skill content
View source on GitHub
A Raspberry Pi 4 case from an empty design: a sketch dimensioned with the board's parameters, extrude, fillet, shell, the rim rounded in one pick, an M2.5 standoff patterned on the 58 × 49 mm hole rectangle, port cut-outs, vent slots, "Pi 4" engraved in DejaVu Sans Bold and a PETG material defined in the design, with its mass in Properties, then height 24 → 32 mm in Parameters and it all rebuilds. 9× playback. Full video, recorded with the demo script.
Download
- Windows: download and run the installer.
Also for ARM64 and 32-bit PCs, or as a
portable zip that runs without installing.
With WinGet:
winget install bherbruck.SolidCraft. - macOS: open the disk image and drag SolidCraft into Applications (Apple silicon and Intel).
- Linux: download the AppImage, allow it to run as a program and open it.
Or install the .deb (Ubuntu, Debian, Mint) or .rpm (Fedora,
openSUSE), or use Flatpak.
With Snap:
sudo snap install solidcraft(Snap Store, or the .snap file). For ARM64: AppImage, .deb, .rpm. - Web: try it in your browser, no install.
The downloads aren't signed yet. On Windows, if SmartScreen warns you, choose More info, then Run anyway. On macOS, the first time, right-click SolidCraft in Applications and choose Open.
On SolidCraft 0.11 to 0.14? Its Update now can't install 0.15.0 or later, because the releases moved to a new address. Download the new version once from the links above; after that, updating from inside SolidCraft works again (details).
Older versions, checksums and other formats are on the releases page. Install details, upgrading from earlier builds and building from source are in Getting started.
Documentation: the SolidCraft book (user guide, developer guide and command reference; sources in docs/book).
Community: chat with users and contributors on Discord.
Status: early but usable for simple parts. 75 of 76 public reference parts match their analytic or FreeCAD-computed volume, area, centre of mass and bounding box (docs/oracle.md); the other is a tracked bug. These checks do not establish complete geometric or workflow equivalence. The commands SolidCraft has are listed by area in docs/features.md; status and plans are in ROADMAP.md. Open work and known bugs are in GitHub issues, and help is welcome: see CONTRIBUTING.md.
Built with SolidCraft
<a href="https://github.com/0xlillith/solidcraft-rover"><img src="docs/screenshots/rover-build.gif" alt="SELENE, a scientific rover by 0xlillith, assembling itself as the timeline plays through its 3,323 steps in SolidCraft: tub, wheels, electronics, suspension, sampling arm, solar wings, dish and camera turret" loading="lazy"></a>
SELENE, a scientific rover built entirely through SolidCraft's MCP server by @0xlillith: 3,323 editable timeline steps that rebuild with no errors, replayed here at 2× speed. Full video · download the editable model.
What works
-
Current-view DXF export from File → Export Current View as DXF, with hidden edges omitted or dashed, shown body placements and the current camera. See view DXF.
-
Sketches on origin planes, offset planes or planar faces: lines, rectangles, circles, arcs, polygons, slots, ellipses, fit/control splines, conics and text; construction geometry, projection, trimming, fillets and chamfers, including corners at the origin. New face attachments retain supported construction identities and chosen occurrences; missing sources expose an explicit plane repair workflow. See face attachments. Explicitly closed fit splines and closed associative offsets use periodic C2 interpolation. Supported convex line-and-arc offsets retain their identity when an inset consumes corner arcs, and linked extrusions follow the current boundary. Breaking the association freezes the boundary and keeps existing extrusions usable. Curve drawing and picking adapt together to zoom and display scale, including small circles at Fit and sketches in placed components.
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Constraints and dimensions solved by our own solver. Points the constraints fix relative to known geometry are placed exactly by construction (loci intersections and rigid-cluster decomposition, after Owen 1991 and Fudos–Hoffmann 1997); Levenberg–Marquardt solves the rest, and the rank of its Jacobian gives the remaining degrees of freedom. Constraints: coincident, point on curve, horizontal/vertical, parallel, perpendicular, tangent, curvature (G2), equal, concentric, collinear, midpoint, symmetry, fix; linear, aligned, horizontal, vertical, point-to-line, radius, diameter, angle, arc sweep, arc length and slot length dimensions driven by parameters. Over-constraining edits are rejected; fully constrained geometry turns black. Dragging solves the sketch every frame and rebuilds the model once, when the drag ends. Select a line or its two endpoints, type its dimension and press Enter to commit one undo step; with Sketch Dimension it's D, click, type, Enter. Fit keeps sketch geometry clear of the palette and navigation controls.
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Profiles found automatically, including regions split by lines and holes inside outlines. Newly captured complete adaptive boundaries retain their outer and hole source identities when spline span counts change. Partial or ambiguous boundaries do not qualify.
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Features on a parametric timeline: extrude, revolve, sweep, loft, fillet/chamfer, shell, dra
Truncated for display — read the full file on GitHub.
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Languages
Trust signals
From repository metadata: license, adoption, age and documentation. Not a code audit — see the Safety scan above for what the skill file itself contains.
