February 2026: KittyCAD/modeling-api — Delivered Surface Blending Feature with configurable blend types and edge fractions; added API endpoint for surface blending; introduced builder pattern for SurfaceEdgeReference to simplify blend construction; and synchronized tooling via a 0.2.167 release to support the new API surface.

Monthly performance summary for 2026-01 focusing on business value and technical delivery across KittyCAD repos.

December 2025 monthly performance summary for KittyCAD development, focusing on key accomplishments across modeling-api and modeling-app. Delivered rendering and API extensibility improvements in modeling-api, plus UI enhancements in modeling-app. Implemented Backface Rendering Enhancements, adding backface_color to material definitions, a system-wide default backface color, and updating OpenAPI spec with serde compatibility for rendering features. Introduced BodyType enum to differentiate solid versus surface extrusion, extended related methods and API docs, and added Revolve endpoint parameter body_type with corresponding OpenAPI and Rust enum updates. Consolidated release planning by bumping modeling-cmds to versions 0.2.148–0.2.151 to reflect bug fixes and enhancements. In modeling-app, added a UI backface color parameter and updated dependency to modeling-cmds 0.2.148 to enable UI customization of backface rendering. These efforts improved visual realism, API consistency, release hygiene, and user configurability, delivering tangible business value through enhanced rendering fidelity, clearer API contracts, and accelerated feature delivery.

October 2025 performance summary: Delivered API enhancements and stability improvements across KittyCAD repos, focusing on build reproducibility, scalable data access, and geometry operations. Key outcomes: release engineering for modeling commands, new paginated SceneGetEntityIds API, and chamfer angle support in KCL with validation. These changes reduce maintenance burden, enable richer client integrations, and improve correctness of geometry operations. Core technologies: Rust/Cargo, API design, pagination, input validation, documentation/testing processes.

September 2025 focused on expanding and stabilizing the KittyCAD modeling API for advanced cutting workflows and reliable release packaging. Delivered a new Advanced Cutting System with Custom CutType and CutTypeV2 API, including CustomParams, enhanced FilletParams and ChamferParams, plus the Solid3dCutEdges endpoint, with API/OpenAPI updates to support complex operations. Completed the release process by bumping modeling-cmds to 0.2.141, ensuring a clean, traceable deployment path.

Concise monthly summary for 2025-08 focusing on business value and technical achievements. This month, KittyCAD delivered API-level naming alignment for ellipse handling, enhanced UI/API consistency in the modeling-app, and improved test stability. Key outcomes across two repos: KittyCAD/modeling-api and KittyCAD/modeling-app.

July 2025: Delivered substantive modeling enhancements across KittyCAD modeling-api and modeling-app, enabling richer geometric construction and more robust extrusion semantics, alongside essential release maintenance and bug fixes. Key features include elliptical arcs and conic sections in modeling commands, new ExtrudeMethod control, and sketch-on-plane-normal workflows with orientation controls. Major bugs fixed include correct unit handling for elliptic curves in inches and release bumps for version consistency. These changes reduce modeling friction, improve accuracy in rendering, and support expanded 3D workflows, delivering concrete business value through improved user productivity, safer migrations, and clearer API surfaces.

June 2025: Implemented flexible transformation origins across KittyCAD modeling-api and modeling-app, enabling transformations (translate, rotate, scale) to be anchored to any specified point. Introduced origin field in TransformBy and added tests to validate origin behavior and fallback compatibility with the deprecated is_local flag, while refactoring transformation logic in the modeling-app to support precise origin control. Strengthened test coverage, dependency management, and simulation tests to ensure reliability of origin-based transformations across workflows.

May 2025 performance summary focused on delivering reliable geometry operations and keeping dependencies up-to-date to support safe releases and downstream workflows.

April 2025 monthly summary focusing on key accomplishments, top business-value driven features, major fixes, and technical competencies demonstrated across KittyCAD repositories.

March 2025 monthly summary for KittyCAD/modeling-api. Focused on delivering structural enhancements to modeling API, expanding path capabilities, and reinforcing release engineering to ensure stable builds.

January 2025 monthly summary for KittyCAD/modeling-api: Implemented a cohesive object transformation workflow, added plane projection capabilities for entities and points, and released ongoing updates to the modeling-commands library, all while enhancing API consistency and release automation. These changes strengthen modeling accuracy, reduce manual steps, and enable scalable scripting workflows.

2024-12 — KittyCAD modeling-api delivered a new modeling command AddHoleFromOffset to create holes in closed paths by inward offset, providing clients with control over face IDs during extrusion and returning a structured response with new entity IDs. Also upgraded the kittycad-modeling-cmds library to 0.2.84, with corresponding updates to Cargo.toml and Cargo.lock to reflect a standard library release. These changes improve modeling precision, client automation capabilities, and build stability, enabling faster feature delivery and more reliable deployments.

Month: 2024-11 | KittyCAD/modeling-api: Delivered new MakeOffsetPath command to create offset paths from an existing object, with support for source object ID, optional solid face ID, and offset distance using LengthUnit. The API reports whether the result creates multiple paths, enabling downstream processing and UI behavior. This work reduces manual modeling steps, accelerates geometry workflows, and establishes a foundation for advanced offset-based operations. Commit trace: 8d92df3928f158b4440c6c7abe1bf957e8d9de54 (Endpoint for creating a new path by offsetting an existing path (#633)).