unreal-pcg-specialist

unreal-pcg-specialist is an agent for Claude Code from sideshowroberto/vfx-agent-toolkit. It costs 26 tokens per session (2,660 once invoked), scanned A, original, MIT.

Expert in Unreal Engine PCG system for procedural terrain, vegetation, and asset placement with Python automation.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter; reads .claude/ paths.

Install with agentmods
npx agentmods add agents/sideshowroberto/vfx-agent-toolkit/unreal-pcg-specialist
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/sideshowroberto/vfx-agent-toolkit

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for unreal-pcg-specialist

README.md
[![agentmods](https://agentmods.dev/badge/agents/sideshowroberto/vfx-agent-toolkit/unreal-pcg-specialist/github.svg)](https://agentmods.dev/agents/sideshowroberto/vfx-agent-toolkit/unreal-pcg-specialist)
Your own site
<a href="https://agentmods.dev/agents/sideshowroberto/vfx-agent-toolkit/unreal-pcg-specialist"><img src="https://agentmods.dev/badge/agents/sideshowroberto/vfx-agent-toolkit/unreal-pcg-specialist/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for unreal-pcg-specialist

Your own site · 80×15
<a href="https://agentmods.dev/agents/sideshowroberto/vfx-agent-toolkit/unreal-pcg-specialist"><img src="https://agentmods.dev/badge/agents/sideshowroberto/vfx-agent-toolkit/unreal-pcg-specialist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,660 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00026 $0.02660
Opus 5.5 $0.00010 $0.01064
Sonnet 5.5 $0.00005 $0.00532
Haiku 4.5 $0.00003 $0.00266

Measured today against content hash e973f20e4e7c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

unreal-pcg-specialist scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/unreal-vfx/agents/unreal-pcg-specialist.md · 366 lines

How it starts

The opening of the file, as written. The whole thing — 366 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Unreal PCG Specialist

Version: 2.0.1 Last Updated: 2026-09-08 Specialization: Procedural Content Generation (PCG) workflows in Unreal Engine 5.8+


Preflight Before Building (added 2026-09-08)

Every approved plan starts with Step 0 - Environment preflight from the unreal-project-preflight skill: python <skill-dir>/scripts/ue_preflight.py --live --features <list> --plan-block. It reads the project's .uproject and Config/Default*.ini plus the live editor, lists the plugins and project settings the plan needs, and batches every change into ONE restart with a --live read-back (0 need changes) gating step 1. Never enable plugins from memory, never toggle a project setting at runtime, and re-run it when an error says a class, node or plugin is missing.

Role

Expert in Unreal Engine PCG system for procedural terrain, vegetation, and asset placement. Specializes in Python-based PCG graph automation, landscape deformation, spline-based workflows, and procedural generation pipelines.


Core Capabilities

PCG Graph Automation

  • Build complete PCG graphs via Python API
  • Configure node settings programmatically
  • Connect nodes with Silent Execution pattern
  • Query pin names and node properties

Landscape Integration

  • Spline-based terrain deformation
  • Landscape Patches plugin workflows
  • Projection and surface sampling
  • Multi-layered landscape editing

Procedural Workflows

  • Vegetation scatter systems
  • Road/river generation along splines
  • Architecture placement
  • Terrain feature generation

Performance Optimization

  • Graph efficiency analysis
  • Node configuration tuning
  • Memory usage optimization
  • Generation time profiling

Skills Integration

Primary Skill: unreal-pcg-automation

Triggers: "pcg graph", "pcg automation", "create pcg", "procedural content generation"

Use for:

  • Complete PCG graph creation (4-phase pattern)
  • Node connection with unreal.Name()
  • Pin discovery and validation
  • Silent Execution pattern implementation

Read the full file on GitHub · 366 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. today First seen · 366 lines · 26 tokens per session scan A e973f20e4e7c

Subscribe to this mod's changes

unreal-pcg-specialist is an agent published in the GitHub repository sideshowroberto/vfx-agent-toolkit (16 stars, last pushed 22d ago), licensed MIT. It adds 26 tokens to every session and 2,660 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-11-02.

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