Par CAD MCP Server

Parametric CAD you write as code - for people, and for agents. Status: 0.0.1, experimental. One author, and the DSL still moves. Every operation is checked against measured geometry (eval/cases/), but none of it has had the years of abuse that make a CAD kernel trustworthy.

People who work with cad, opencascade and tauri and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Rust.

VERIFIED ACTIVE

LAST COMMIT 2026-09-17 · ★ 2 · #824 OF 945 MAINTAINED OTHER · VERIFIED 2026-09-18

Apache-2.0 · Rust servers · how we verify → /methodology

01 · Install Par CAD

Claude Desktop

Settings → Extensions → Install, then select the https://github.com/ierehon1905/parcad/releases/download/v0.0.7/parcad-mcp-aarch64-apple-darwin.mcpb .mcpb bundle

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as Claude Desktop extension (.mcpb bundle)

repo age created 2026-08-06 - young repo, little track record yet

license Apache-2.0 - declared in the repository

registry namespace io.github.ierehon1905 is GitHub-verified and matches the repo owner

03 · What Par CAD can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v0.0.7 · 2026-09-17

macOS will refuse to open this the first time. These builds are · not signed with an Apple Developer ID or notarised. Clear the · quarantine flag once and it opens normally: · xattr -dr com.apple.quarantine…

v0.0.6 · 2026-09-15

Experimental. Parametric CAD you write as code, measured by an exact B-rep kernel, with an MCP server for the model that writes it. · What's new in 0.0.6 · Linux and Windows. The desktop app, the headless host and the…

04 · Who maintains Par CAD

ParCAD is maintained by ierehon1905. It's the only MCP server we track from this author; the repo dates to Aug 2026.

05 · Facts

repository
github.com/ierehon1905/parcad
website
https://github.com/ierehon1905/parcad
category
other - ranked #824 of 945 actively-maintained other servers as of 2026-09-18.
release cadence
2 releases in the last 90 days (latest 2026-09-17)
registry
io.github.ierehon1905/parcad (active, first published 2026-09-14 · 4 versions)
packages
mcpb:https://github.com/ierehon1905/parcad/releases/download/v0.0.7/parcad-mcp-aarch64-apple-darwin.mcpb · mcpb:https://github.com/ierehon1905/parcad/releases/download/v0.0.7/parcad-mcp-x86_64-unknown-linux-gnu.mcpb · mcpb:https://github.com/ierehon1905/parcad/releases/download/v0.0.7/parcad-mcp-x86_64-pc-windows-msvc.mcpb

06 · Par CAD FAQ

What is Par CAD?

Parametric CAD you write as code - for people, and for agents. Status: 0.0.1, experimental. One author, and the DSL still moves. Every operation is checked against measured geometry (eval/cases/), but none of it has had the years of abuse that make a CAD kernel trustworthy.

Is Par CAD still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-17 and it shipped 2 releases in the last 90 days. We re-verify nightly.

07 · Alternatives to Par CAD

Alternatives to Par CAD

Maintained other servers if Par CAD isn't the fit.

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  6. Microsoft Fabric MCP Server MCP tools for interacting with Microsoft Fabric ★ 3,681 · 2026-09-17

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