UnitySkills is a REST API-based automation engine that lets AI coding agents control Unity Editor projects, including scenes and other editor operations. It is for developers using Unity with supported coding agents and IDEs. The catalogue skills and commands provide the agent workflows used to operate Unity projects through the engine.
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.
npx agentmods add skills/besty0728/unity-skills/decalnpx skills add Besty0728/Unity-Skills --skill decalgit clone --depth 1 https://github.com/Besty0728/Unity-SkillsWrote 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.
[](https://agentmods.dev/skills/besty0728/unity-skills/decal)<a href="https://agentmods.dev/skills/besty0728/unity-skills/decal"><img src="https://agentmods.dev/badge/skills/besty0728/unity-skills/decal.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00013 | $0.01598 |
| Opus 5 | $0.00006 | $0.00799 |
| Sonnet 5 | $0.00003 | $0.00320 |
| Haiku 4.5 | $0.00001 | $0.00160 |
Grade A, and why
unity-decal 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 5d ago.
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.
How it starts
The opening of the file, as written. The whole thing — 123 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Before calling any skill in this module: if you are about to call a skill with parameters guessed from its name or description, STOP — read this file (or fetch its schema via
GET /skills/recommend?includeSchema=true) first. If you already have the parameter definitions from recommend/schema, you may proceed straight to dryRun.
Triggers
- Adding decals in URP
- Configuring a Decal Projector
- Enabling the Decal Renderer Feature
- 在 URP 中添加贴花、配置 Decal Projector、启用 Decal Renderer Feature
Decal Skills
URP Decal Projector creation and configuration (URP only; HDRP decal APIs are not covered here).
Operating Mode
- Query skills (
decal_get_info,decal_find_all) areSkillMode.SemiAuto— they run in all three modes without grant. - Mutating skills (
decal_create,decal_set_properties,decal_set_properties_batch,decal_ensure_renderer_feature) areSkillMode.FullAuto— under Approval they need user grant (grant triggers one server-side execute returning the result); under Auto / Bypass they execute directly. decal_deletecarriesSkillOperation.Deleteand is auto-forbidden in Approval / Auto modes (NeverInSemi). Only Bypass or the user-managed Allowlist can run it.
URP Package Stub
This module is compiled against com.unity.render-pipelines.universal (URP). When URP is not installed, every skill returns a stub { error: "Universal Render Pipeline package … is not installed." } (RenderPipelineSkillsCommon.NoURP()). The stub is a diagnostic payload, not a permission denial — it does not require grant and is not treated as NeverInSemi.
Guardrails
Routing:
- For renderer feature management in general:
urp - For DecalProjector scene operations: this module
Runtime-first rules:
- Call
decal_ensure_renderer_featurebefore assuming the current URP renderer is decal-ready - Use
decal_get_info/decal_find_allto discover real projector state before editing decal_set_properties_batchexpectsitemsto be a JSON array string- This module targets the URP Decal workflow first; do not assume HDRP decal APIs are covered here
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.
- 5d ago First seen · 123 lines · 13 tokens per session scan A 5c977f3d8a90
unity-decal is a skill published in the GitHub repository Besty0728/Unity-Skills (1,707 stars, last pushed today), licensed MIT. It adds 13 tokens to every session and 1,598 once invoked, about $0.0001 per session on Opus 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 2026-08-30.
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