vfx

Create a new stylized Unity VFX from a description and optional reference images, directing a team of specialist agents (architect, texture, shader, particle artists and a critic) through spec, concept approval, production, capture-based review and iteration. Use when the user asks for a new visual effect in Unity.

Change an existing Effect Designer VFX from natural-language feedback ("more aggressive", "fade out slower", "more purple", "reads badly on sand") by translating it into spec changes and small patch recipes, then re-capturing. Use when the user gives feedback on an effect made with /vfx:create.

Reference for building Shuriken particle systems with the vfx_apply_particle_recipe tool — recipe format, value notation (curves, easing, HDR colors, palette), module keys, sub-emitters, custom data and vertex streams, common pitfalls, and stylized VFX patterns. Load whenever you create or change a ParticleSystem for an effect.

Measuring reference images, GIFs or short videos of an effect with the bundled vfxref.py (crop, reference sheet, per-frame composition of white core / bright color / ink, bright hue, palette) and comparing captures against them side by side. Load when the user gives reference images or clips for an effect, and when reviewing an effect that has references.

Capture and critique any Unity particle effect (made with Effect Designer or not) against stylized VFX principles, with a scored report and concrete fixes. Use when the user asks to review, critique or check an existing effect.

Making the 2D textures an effect needs (particle shape masks, rings, stars, slashes, streaks, noise, stylized smoke flipbooks, SVG drawings) with the bundled vfxtex.py generator or hand-written SVG, and importing them correctly into Unity. Load when an effect's manifest asks for textures that the starter set does not cover.

How the Effect Designer agents talk to the Unity Editor through MCP for Unity (CoplayDev/unity-mcp) and the VFX Toolkit custom tools. Load before any Unity call in a VFX task — building particle systems or VFX Graphs, writing shaders or materials, importing textures, or capturing/reviewing an effect with vfx_capture_timeline.

Principles of stylized game VFX (timing beats, shape language, value and color, readability, layering) and the Effect Designer's critique rubric with its measurable checks. Load when writing an effect spec, judging a capture, or deciding what to change between iterations.

Writing and checking URP effect shaders for the Effect Designer — the VFXCore.hlsl library, the ready-made "EffectDesigner/Particles/Stylized Unlit" and "Stylized Shell" shaders and their vertex-stream contracts, inline materials in particle recipes, HDR/bloom rules, and the vfx_compile_report loop. Load before writing or changing any shader or material for an effect.