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niagara-systems

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Rapid-iteration parameter tuning, diagnostics, and Custom-HLSL scratch-pad authoring for Niagara systems (VibeUE NiagaraService + NiagaraScratchPadService). System/emitter/parameter CRUD is owned by the engine NiagaraToolsets. Use when the user asks to tune emitter rapid-iteration params, compare/diagnose systems, or build scratch-pad/Custom HLSL modules. For emitter color/module work, load niagara-emitters.

Content/Skills/niagara-systems/SKILL.md

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Nov 10, 2026

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Nov 10, 2026
License
MIT

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> 🧠 **Brains complement:** IF an `unreal-engine-skills-manager` tool (external MCP) exists in this session, call it with `{action: "load", skill: "niagara-vfx"}` for UE domain knowledge on this topic — correct APIs, architecture, best practices — and treat it as the rubric for any review / "best practices" question. If no such tool is available (e.g. running under Claude Code or Codex without that MCP), skip this line entirely and proceed with this skill alone — do NOT attempt the call.

## Niagara Systems Skill

> **Architecture (read first):** VibeUE extends Unreal's native MCP endpoint. System / emitter /
> parameter **create / add / copy / remove / list / compile** are owned by the **engine** toolset
> `NiagaraToolsets.NiagaraToolset_System` (plus `…_Assets`, `…_Component`, `…_Blueprint`, `…_Info`),
> called through `call_tool`. VibeUE's `NiagaraService` was trimmed to the rapid-iteration-parameter
> tuning + diagnostics that the engine toolset does not cover, and `NiagaraScratchPadService`
> (Custom-HLSL graph authoring) which is unique to VibeUE.

**VibeUE `NiagaraService` (this skill) keeps ONLY:**
- Rapid-iteration parameter read/write — `list_rapid_iteration_params`, `set_rapid_iteration_param`, `set_rapid_iteration_param_by_stage`
- Diagnostics — `compare_systems`, `get_emitter_lifecycle`, `debug_activation`
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