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 skills add jame581/GodotPrompter --skill 3d-essentialsgit clone --depth 1 https://github.com/jame581/GodotPrompterWrote 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/jame581/godotprompter/3d-essentials)<a href="https://agentmods.dev/skills/jame581/godotprompter/3d-essentials"><img src="https://agentmods.dev/badge/skills/jame581/godotprompter/3d-essentials/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.
<a href="https://agentmods.dev/skills/jame581/godotprompter/3d-essentials"><img src="https://agentmods.dev/badge/skills/jame581/godotprompter/3d-essentials.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 5.1 | $0.00047 | $0.03456 |
| Opus 5.5 | $0.00019 | $0.01382 |
| Sonnet 5.5 | $0.00009 | $0.00691 |
| Haiku 4.5 | $0.00005 | $0.00346 |
Grade A, and why
3d-essentials 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 yesterday.
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 — 206 lines — stays where its author put it; the contents beside it link to each section on GitHub.
3D Essentials in Godot 4.3+
All examples target Godot 4.3+ with no deprecated APIs. GDScript is shown first, then C#.
Related skills: rendering-pipeline for renderer choice, lighting strategy, AA and resolution scaling, player-controller for CharacterBody3D movement, physics-system for 3D collision shapes and raycasting, camera-system for Camera3D follow and transitions, shader-basics for spatial shaders and post-processing, godot-optimization for 3D performance tuning, animation-system for AnimationTree and 3D animation blending.
1. 3D Coordinate System & Core Nodes
Coordinate System
Godot uses a right-handed coordinate system with metric units (1 unit = 1 meter):
| Axis | Direction | Color |
|---|---|---|
| X | Right | Red |
| Y | Up | Green |
| Z | Out of screen (+Z toward viewer) | Blue |
Cameras and lights point along -Z by default. When a character "faces forward," they look along -Z.
Essential 3D Nodes
| Node | Purpose |
|---|---|
Node3D |
Base transform node — position, rotation, scale |
MeshInstance3D |
Displays a mesh with a material |
Camera3D |
Required to render 3D — perspective or orthogonal |
DirectionalLight3D |
Sun/moon — parallel rays, cheapest light |
OmniLight3D |
Point light — emits in all directions |
SpotLight3D |
Cone light — flashlights, spotlights |
WorldEnvironment |
Sky, fog, tonemap, post-processing |
Decal |
Projected texture onto surfaces |
GPUParticles3D |
GPU-driven particle effects |
CSGBox3D etc. |
Constructive Solid Geometry — prototyping |
GridMap |
3D tile-based level building |
Godot 4.7+:
GridMapexposes its internal octants for spatial queries (cell_octant_size,get_used_octants(),get_octants_in_bounds()and friends) so you can scope work to a region instead of walking every cell.CSGShape3Dgainsautosmooth/smoothing_anglefor automatic face smoothing. Full method table and semantics: references/godot-4.7-additions.md
What ships with it
9 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/common-pitfalls.md 2.2 KB
- references/decals.md 2.5 KB
- references/environment-and-post.md 7.9 KB
- references/fog-recipes.md 3.4 KB
- references/global-illumination.md 4.2 KB
- references/godot-4.7-additions.md 1.5 KB
- references/lod-and-culling.md 3.3 KB
- references/materials-and-lighting-recipes.md 9.5 KB
- references/renderer-comparison.md 752 B
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.
- yesterday Changed 53b207061039
- 2d ago Changed · -10 lines d406a4db4f2d
- 11d ago Changed 0dd73965c4df
- 1mo ago First seen · 216 lines · 47 tokens per session scan A 1208b31c061e
3d-essentials is a skill published in the GitHub repository jame581/GodotPrompter (866 stars, last pushed 2d ago), licensed MIT. It adds 47 tokens to every session and 3,456 once invoked, about $0.0002 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 2026-08-30.
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