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 Bbeierle12/Skill-MCP-Claude --skill r3f-materialsgit clone --depth 1 https://github.com/Bbeierle12/Skill-MCP-ClaudeWrote 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/bbeierle12/skill-mcp-claude/r3f-materials)<a href="https://agentmods.dev/skills/bbeierle12/skill-mcp-claude/r3f-materials"><img src="https://agentmods.dev/badge/skills/bbeierle12/skill-mcp-claude/r3f-materials/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/bbeierle12/skill-mcp-claude/r3f-materials"><img src="https://agentmods.dev/badge/skills/bbeierle12/skill-mcp-claude/r3f-materials.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 | $0.00056 | $0.03225 |
| Opus 5 | $0.00028 | $0.01613 |
| Sonnet 5 | $0.00011 | $0.00645 |
| Haiku 4.5 | $0.00006 | $0.00323 |
Grade A, and why
r3f-materials 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 11d 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 — 501 lines — stays where its author put it; the contents beside it link to each section on GitHub.
R3F Materials
Materials define surface appearance—color, texture, reflectivity, transparency, and custom shader effects.
Quick Start
// Built-in material
<mesh>
<boxGeometry />
<meshStandardMaterial color="hotpink" metalness={0.8} roughness={0.2} />
</mesh>
// Custom shader
<mesh>
<planeGeometry />
<shaderMaterial
uniforms={{ uTime: { value: 0 } }}
vertexShader={vertexShader}
fragmentShader={fragmentShader}
/>
</mesh>
Built-in Materials
Material Comparison
| Material | Lighting | Use Case | Performance |
|---|---|---|---|
MeshBasicMaterial |
None | UI, unlit, debug | Fastest |
MeshStandardMaterial |
PBR | General 3D | Good |
MeshPhysicalMaterial |
PBR+ | Glass, car paint | Slower |
MeshLambertMaterial |
Diffuse | Matte surfaces | Fast |
MeshPhongMaterial |
Specular | Shiny plastic | Fast |
MeshToonMaterial |
Cel-shaded | Stylized | Good |
MeshNormalMaterial |
None | Debug normals | Fastest |
MeshDepthMaterial |
None | Depth passes | Fastest |
MeshBasicMaterial (Unlit)
<meshBasicMaterial
color="#ff0000" // Base color
map={texture} // Color texture
transparent={true} // Enable transparency
opacity={0.5} // Transparency level
alphaMap={alphaTexture} // Transparency texture
side={THREE.DoubleSide} // Render both sides
wireframe={true} // Wireframe mode
fog={false} // Ignore scene fog
/>
MeshStandardMaterial (PBR)
<meshStandardMaterial
// Base
color="#ffffff"
map={colorTexture}
// PBR properties
metalness={0.5} // 0 = dielectric, 1 = metal
metalnessMap={metalMap}
roughness={0.5} // 0 = mirror, 1 = diffuse
roughnessMap={roughMap}
// Normal mapping
normalMap={normalTexture}
normalScale={[1, 1]}
// Ambient occlusion
aoMap={aoTexture}
aoMapIntensity={1}
// Displacement
displacementMap={dispMap}
displacementScale={0.1}
// Emission
emissive="#000000"
emissiveMap={emissiveTexture}
emissiveIntensity={1}
// Environment
envMap={cubeTexture}
envMapIntensity={1}
/>
What ships with it
2 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.
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.
- 11d ago First seen · 501 lines · 56 tokens per session scan A f6551a877c09
r3f-materials is a skill published in the GitHub repository Bbeierle12/Skill-MCP-Claude (8 stars, last pushed yesterday), licensed MIT. It adds 56 tokens to every session and 3,225 once invoked, about $0.0003 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 2026-08-31.
Other skills, from other repositories
blog-post
Writes and structures long-form blog posts, creates tutorial outlines, and optimizes content for SEO with cover image generation. Use when the user asks to write a blog post, article, how-to guide, tutorial, technical writeup, thought leadership piece, or long-form content.
manimgl-best-practices
Trigger when: (1) User mentions "manimgl" or "ManimGL" or "3b1b manim", (2) Code contains from manimlib import , (3) User runs manimgl CLI commands, (4) Working with InteractiveScene, self.frame, self.embed(), ShowCreation(), or ManimGL-specific patterns. Best practices for ManimGL (Grant Sanderson's 3Blue1Brown…
comfyui-node-registry
Authoring & publishing ComfyUI custom nodes to the Comfy Registry, covering node structure, pyproject.toml spec, comfy-cli publishing, and CI.
composing-with-pytheory
Compose music with PyTheory — chord progressions, melodies, basslines, drum grooves, and full multi-part arrangements written in pure Python and rendered to audio or MIDI. Use whenever the user wants to write, sketch, generate, or arrange music — "write me a bossa nova in G minor", "make a four-chord pop loop", "lay…
playing-guitar-with-pytheory
Help guitarists and string players with PyTheory — chord fingerings and shapes, ASCII tablature, chord identification, scale diagrams, SVG/PNG diagram images, alternate tunings and capo, Nashville number charts, and a real-time strobe tuner. Use whenever the user asks for a chord shape or fingering ("how do I play…
telnyx-tts-python
Generate speech from text using Telnyx and third-party TTS providers (AWS, Azure, ElevenLabs, MiniMax, Resemble, Rime, xAI). Returns base64-encoded audio or a binary stream. Also lists available voices per provider.