> ## Documentation Index
> Fetch the complete documentation index at: https://invariant-cad.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# InvariantCAD 0.1.0

> First public foundation release: parametric CAD, two kernels, exact topology-aware features, analysis, assemblies, and hardened packaging.

# InvariantCAD 0.1.0

InvariantCAD 0.1.0 is the first public foundation release of the comprehensive,
type-safe CAD-as-code system for TypeScript.

## Highlights

* Immutable, canonical, versioned design documents with stable IDs and frozen
  v1-v6 compatibility.
* Dimension-safe parameters and expressions, sketches, constraints, profiles,
  parts, nested fixed assemblies, materials, configurations, and deterministic
  bills of materials.
* Robust mesh modeling through Manifold WebAssembly and exact B-Rep modeling
  through stock OpenCascade WebAssembly.
* Exact primitives, extrusion, revolution, Booleans, bounded ruled lofts,
  bounded line/arc sweeps, fillets, equal-distance chamfers, shells, whole-solid
  offsets, and optional owned-facade draft.
* STEP, text and binary BREP, STL, and OBJ exchange.
* Kernel-neutral volume, area, bounds, center of mass, inertia, principal-axis,
  radius-of-gyration, and density-aware physical-mass analysis.
* Semantic topology selectors and fail-closed persistent face, edge, and vertex
  references with explanation reports and a published torture corpus.
* Authored impact analysis, feature Merkle hashes, bounded artifact/cache
  protocols, conformance auditing, and canonical semantic observation.
* Structured diagnostics, explicit native ownership, a CLI, package-consumer
  smoke tests, and real Chromium coverage for both shipped WebAssembly kernels.

## Install

pnpm add invariantcad

Node.js 20.19 or newer is required. The package is ESM and supports modern
browsers with explicit WebAssembly URLs when required by the bundler.

## Public entry points

* invariantcad
* invariantcad/conformance
* invariantcad/kernels/occt

## Important boundaries

* No shipped kernel advertises a production cross-run shape codec yet, and the
  evaluator does not yet read or write cached shapes.
* The separately built InvariantCAD-owned OpenCascade facade is not included in
  the npm package and remains unpublished pending external review.
* Stock OpenCascade provides the base exact feature set. Complete exact topology
  evolution for selected advanced operations requires an explicitly supplied,
  matched owned-facade build.
* The standalone Manifold core runtime is pinned by npm integrity, identified
  upstream build provenance, and per-file SHA-256 inside the package. Embedded
  component notices ship with it, and its unrelated vulnerable image/glTF
  dependency tree is absent. Production releases require a zero-advisory audit
  across production and development dependencies.

For the exhaustive feature-level record, see the
[0.1.0 changelog](https://github.com/shlokjain42/invariantCAD/blob/v0.1.0/CHANGELOG.md). For supported and planned capabilities,
see the [support matrix](/reference/support-matrix) and
[roadmap](../roadmap.md).