3d-lighting

3d-lighting is a skill for Claude Code from SummerEngine/summer-engine-agent. It costs 83 tokens per session (2,025 once invoked), scanned A, original, MIT.

A guide to lighting 3D scenes in Summer Engine. It explains which light types suit sunlight, lamps, torches, and flashlights, along with sky, ambient light, and shadows.

In plain words
What is it for?
Use it to add and configure directional, point, and spot lights; set up a sky and ambient environment; tune light color and energy; and enable shadows.
Why use it?
It gives a clear structure for making outdoor and indoor scenes readable and for controlling how objects are lit and cast shadows.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions Claude Code; mentions Codex.

Part of the summer plugin — 80 skills, 2 commands, 2 hooks, 1 MCP server shipped together

Good fit Use it to add and configure directional, point, and spot lights; set up a sky and ambient environment; tune light color and energy; and enable shadows.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/summerengine/summer-engine-agent/3d-lighting
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.

Any agent
npx skills add SummerEngine/summer-engine-agent --skill 3d-lighting
Clone the repo
git clone --depth 1 https://github.com/SummerEngine/summer-engine-agent

Made for: Claude Code.

Or install summer, the plugin that ships this one along with the rest of its 80 skills, 2 commands, 2 hooks, 1 MCP server.

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 3d-lighting

README.md
[![agentmods](https://agentmods.dev/badge/skills/summerengine/summer-engine-agent/3d-lighting.svg)](https://agentmods.dev/skills/summerengine/summer-engine-agent/3d-lighting)
Your own site
<a href="https://agentmods.dev/skills/summerengine/summer-engine-agent/3d-lighting"><img src="https://agentmods.dev/badge/skills/summerengine/summer-engine-agent/3d-lighting.svg" alt="Measured on agentmods" height="20"></a>
Per session 83 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,025 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original 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 $0.00083 $0.02025
Opus 5 $0.00042 $0.01012
Sonnet 5 $0.00017 $0.00405
Haiku 4.5 $0.00008 $0.00202

Measured 8d ago against content hash 6a590bd807c8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

3d-lighting 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 8d 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.

skills/rendering-and-lighting/3d-lighting/SKILL.md · 154 lines

How it starts

The opening of the file, as written. The whole thing — 154 lines — stays where its author put it; the contents beside it link to each section on GitHub.

3D Lighting for Summer Engine

Set up lighting and environment for 3D scenes. Follow these patterns for outdoor and indoor setups.

Light Types

Type Use case
DirectionalLight3D Sun, moon, outdoor primary light
OmniLight3D Point lights (lamps, torches)
SpotLight3D Flashlights, stage lights

Basic Outdoor Setup

1. Directional Light (Sun)

Every tool below also takes a required scenePath (the exact res:// scene to mutate — get it from summer_get_project_context). It is elided in these snippets for readability; a real call without it is rejected by the tool schema.

summer_add_node(scenePath="res://main.tscn", parent="./World", type="DirectionalLight3D", name="Sun")
summer_set_prop(scenePath="res://main.tscn", path="./World/Sun", key="rotation_degrees", value="Vector3(-45, 30, 0)")
summer_set_prop(path="./World/Sun", key="light_energy", value="1.0")
summer_set_prop(path="./World/Sun", key="shadow_enabled", value="true")
summer_set_prop(path="./World/Sun", key="light_color", value="Color(1, 0.95, 0.9, 1)")

Warm sunlight: Color(1, 0.95, 0.9, 1). Cool moonlight: Color(0.8, 0.85, 1, 1).

2. WorldEnvironment (Sky + Ambient)

summer_add_node(parent="./World", type="WorldEnvironment", name="WorldEnvironment")
summer_set_prop(path="./World/WorldEnvironment", key="environment", value="Environment")

Then configure the Environment's sub-properties. The Environment resource has:

  • background_mode — 2 for sky, 1 for color, 3 for canvas (Environment.BG_SKY = 2, BG_COLOR = 1, BG_CANVAS = 3; default is 0, BG_CLEAR_COLOR)
  • sky — Sky resource (ProceduralSkyMaterial or PhysicalSkyMaterial)
  • ambient_light_source — AMBIENT_SOURCE_SKY or AMBIENT_SOURCE_COLOR
  • ambient_light_color
  • tonemap_mode

For a simple procedural sky:

summer_set_resource_property(nodePath="./World/WorldEnvironment", resourceProperty="environment", subProperty="background_mode", value="2")

You may need to create a Sky resource and assign it. In the editor this is done via the inspector; via MCP, SetResourceProperty on nested resources may require the resource to exist first. If environment is "Environment", the engine creates a default. For sky, you might set sky to "ProceduralSkyMaterial" or similar—check Godot docs for the exact property chain.

Read the full file on GitHub · 154 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. 8d ago First seen · 154 lines · 83 tokens per session scan A 6a590bd807c8

Subscribe to this mod's changes

3d-lighting is a skill published in the GitHub repository SummerEngine/summer-engine-agent (57 stars, last pushed 4d ago), licensed MIT. It adds 83 tokens to every session and 2,025 once invoked, about $0.0004 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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