viznoir is a headless, AI-agent-friendly MCP server that gives AI agents full access to VTK's rendering pipeline for cinema-quality scientific visualization, analysis, and animation of simulation data across 50+ file formats — no GUI required.

Rendering

• render — Field visualization as PNG with configurable colormap, camera, and resolution

• cinematic_render — Publication-quality rendering with PCA-based auto-framing, 3-point lighting, SSAO, FXAA, and PBR materials

• batch_render — Render multiple fields from the same dataset in one call

• volume_render — Volume render 3D data (CT, MRI, CFD) with transfer function presets

Filters & Processing

• slice, contour, clip, streamlines — Cut planes, iso-surfaces, clipping, and vector field visualization

• execute_pipeline — Fully custom VTK pipelines with 20+ supported filters

Analysis & Inspection

• inspect_data — Metadata: bounds, arrays, timesteps, multiblock structure

• inspect_physics — Vortex detection (Q-criterion), critical points, boundary conditions, derived quantities (Re, Ma, etc.)

• extract_stats — Statistical summaries (min/max/mean/std) per field

• auto_postprocess — Autonomous inspect → visualize → evaluate → refine workflow

Probing

• plot_over_line — Sample field values along a line for 1D plots

• integrate_surface — Integrate fields over surfaces for forces/fluxes

• probe_timeseries — Sample a field at a fixed point across all timesteps

Animation

• animate — Time-series or camera-orbit animations with 7 physics-aware presets (streamline growth, clip sweep, warp oscillation, etc.), output as MP4, WebM, GIF, or PNG frames

• split_animate — Synchronized multi-pane animations combining 3D views and time-series graphs

Comparison & Composition

• compare — Side-by-side or difference-map comparison of two datasets with shared colorbar

• compose_assets — Compose assets into story, grid, slides, or video layouts (supports LaTeX equations)

Export

• preview_3d — Export to glTF/glB for interactive 3D viewing in a browser

Key Highlights

• Supports 50+ formats: OpenFOAM, VTK, CGNS, Exodus, STL, glTF, and more

• Fully headless (EGL/OSMesa) — no display server needed

• Compatible with Claude Code, Cursor, Windsurf, Gemini CLI, and any MCP client

• Covers 10+ scientific domains: CFD, FEA, medical imaging, geoscience, molecular, automotive, and more

Supports exporting cinematic 3D visualizations and physics-based animations of simulation data to the glTF format for high-fidelity rendering and web display.

Enables the generation of scientific data summaries and publication-ready visualization outputs in LaTeX format for use in technical reports and papers.