NovaSolver Studio

NovaSolver Studio

Free, local engineering simulation that your AI assistant can drive — and every answer is checked. Structural FEM, heat and CFD (CalculiX, OpenFOAM® and a built-in quadratic-tet solver) on your own PC, with an MCP server so Claude or any MCP client can import your STEP/STL, set the loads, run, refine the mesh and verify the result.

日本語 · 中文 · [Try it in your browser (no install)](https://novasolver.jp/studio/demo/?lang=en) · Download for Windows · novasolver.jp/studio

*One sentence to the AI → Studio sets up and solves the case → mesh refined three times (GCI 1.5 %) → compared with a hand calculation. Real app, real numbers.*

*From one prompt, an AI modelled a bracket in SolidCraft and analysed three versions in Studio. It stopped without calling any of them a pass, because the mesh check had failed. 40 s video.*

Why Studio

• Ran ≠ right. Every result carries three separate checks: ran → converged → mesh convergence. The third refines the mesh in three steps and reports the GCI (Roache), so you know the answer does not depend on the mesh; the built-in examples are also compared with closed-form or literature answers. None of this checks the boundary conditions or the design, and the AI is told to say exactly what was checked. Warnings that matter (stress above yield, a stress singularity at a sharp corner) are passed on, not hidden.
• Your models stay on your computer. No account, no upload, no telemetry. The only network use is the optional update check and example download (offline mode turns those off), and a public test fails if any other code starts using the network. For confidential work with a cloud AI, numbers-only mode keeps even pictures of the part away from the AI. See docs/PRIVACY.md.
• Real solvers, no licence fee. CalculiX for structural/thermal, OpenFOAM® for flow and water cooling, a built-in tet10 FEM for answers in seconds. Japanese, English and Chinese UI.
• Typed MCP tools, no shell. 37 tools (create/import, set conditions, mesh, run, convergence, verify, probe, sweep, render). The AI fills a case schema; Studio writes the solver input. Your AI's edits appear live in the window, and you can undo them.
• NovaSolver Flash: build an instant model of your own case. build_surrogate solves about 60 variants of a case in the background (loads, materials, template dimensions; a Gaussian process, checked on points held out of the fit). surrogate_predict then answers in milliseconds with an error bar for the interpolation, and refuses outside the ranges. An imported CAD shape has no dimensions to vary yet.
• Examples made with Flash: seven standard shapes. The instant_estimate tool computes the peak stress or deflection, including for dimensions never solved, from a Gaussian process fitted to 1,396 solved points. No mesh, no solve. It gives the error bar and refuses outside the solved ranges. On 224 new solves it had never seen, 287 of 288 answers landed inside the bar. See the data.
• NovaSolver Genesis: keep only the shape you need (0.8). Topology optimisation on the part itself: with its supports and loads, it seeks a higher-stiffness shape for the volume you choose (for heat, a lower-temperature layout for its sources and sinks). 3D-print overhang, extrusion and symmetry constraints; the result is a closed STL, and an extruded part is also written as a flat-faced STEP. Example: a cantilever on 40,000 cells at 30 % volume keeps 62 % of the full part's stiffness. MCP: run_genesis, genesis_result. Exported and smoothed shapes need their own analysis; see the 0.8.0 reanalysis results and limits.

Checked against known answers

A sample of the references Studio compares itself with (the full validation suite with every case, tolerance and mesh-convergence column is published with each release as docs/VALIDATION.md):

How often does it get through a part it has never seen? docs/PART_TEST.md counts 246 STEP files, including every one that failed and why. Does it tell you when your setup is wrong? docs/SETUP_MISTAKES.md breaks correct setups in 34 ways, with the list fixed before the run, and shows what it said, misses included.

What it does / できること

Also: a Blender add-on (send the active object to Studio, PLA/PETG/ABS or metals), a FreeCAD workbench (send the part as STEP, bring the Genesis result back into the document), a 3D-print strength check (safety factor for each print direction in PLA/PETG/ABS, layer lines included), ParaView VTU / CSV / printable HTML report export, and a Windows installer with .nscase file association.

Linux program (no Python needed)

Download NovaSolverStudio- -linux-x86_64.tar.gz from Releases, unpack it and run ./NovaSolverStudio. Each build is started and test-solved on Ubuntu 22.04 (x86-64) before release. AI assistants connect with ./NovaSolverStudio mcp.

Install with Python (macOS / Linux / Windows)

Available on PyPI. Launch the GUI with uvx novasolver-studio, or install once with pipx install novasolver-studio and run novasolver-studio. Python 3.10+ is required; Python 3.12 is tested in CI. Older Python versions use compatible NumPy/SciPy/Matplotlib/WebSocket releases. The built-in FEM needs no external solver. For an MCP client:

{

"mcpServers": { "novasolver-studio": { "command": "uvx", "args": ["novasolver-studio", "mcp"] } } }

With pipx, use "command": "novasolver-studio", "args": ["mcp"] instead. Cases go to ~/NovaSolverStudio/workspace on macOS/Linux and ~/Documents/NovaSolverStudio/workspace on Windows; NOVASTUDIO_WORKSPACE overrides this. Source checkouts keep their workspace/ folder.

On headless Linux, Gmsh needs libglu1-mesa libgl1 libxrender1 libxcursor1 libxft2 libxinerama1. NOVASTUDIO_CCX and NOVASTUDIO_OPENFOAM can select an installation on every OS. macOS OpenFOAM tools run through the app environment launcher; Linux tools source the installation's etc/bashrc.

Quick start (developers) / 開発者向けの起動手順

python -m venv .venv

.venv\Scripts\python -m pip install "mcp>=2.3,<3" fastapi "uvicorn[standard]" numpy scipy matplotlib gmsh meshio psutil pyamg pymeshlab zstandard pytest cd frontend && npm install && npm run build && cd .. cd backend set PYTHONPATH=%CD% ..\.venv\Scripts\python -m novastudio serve # open http://127.0.0.1:8765

Solvers are found automatically when installed (without them, the built-in preview solvers still work):

• CalculiX: put ccx_static.exe under solvers/calculix/ or set NOVASTUDIO_CCX.
• OpenFOAM (ESI Windows MinGW build): install to %LOCALAPPDATA%\NovaSolverStudio\solvers\openfoam (an ASCII-only path) or set NOVASTUDIO_OPENFOAM. Put Microsoft MPI's msmpi.dll in %LOCALAPPDATA%\NovaSolverStudio\solvers\msmpi.

Use it from an AI assistant (MCP) / AI アシスタントから使う

Easiest (Claude Desktop and other MCPB-aware apps): download novasolver-studio- -win64.mcpb from Releases and open it — the app installs it as an extension. Also listed in the MCP Registry as io.github.novasolver/novasolver-studio.

Client-specific setup guides / アプリ別の導入手順 / 客户端安装指南:

| Codex | [Configuration and optional helper](https://github.com/novasolver/novasolver-studio/blob/main/docs/CODEX_