What is design-rigid-body-scenes?

A guide for describing scenes with solid objects that move, collide, and respond to gravity in Newton, a physics animation system.

Use it to set up boxes, spheres, capsules, floors, keyframed objects, gravity, contacts, and rigid-body animations.

It explains how to represent objects, collision shapes, fixed obstacles, motion, units, and simulation settings consistently.

design-rigid-body-scenes — Skill by wkzMagician/newton-mcp

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 wkzMagician/newton-mcp --skill design-rigid-body-scenes

Clone the repo

git clone --depth 1 https://github.com/wkzMagician/newton-mcp

Made for: Claude Code, Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/wkzmagician/newton-mcp/design-rigid-body-scenes/github.svg)](https://agentmods.dev/skills/wkzmagician/newton-mcp/design-rigid-body-scenes)

Your own site

<a href="https://agentmods.dev/skills/wkzmagician/newton-mcp/design-rigid-body-scenes"><img src="https://agentmods.dev/badge/skills/wkzmagician/newton-mcp/design-rigid-body-scenes/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/wkzmagician/newton-mcp/design-rigid-body-scenes"><img src="https://agentmods.dev/badge/skills/wkzmagician/newton-mcp/design-rigid-body-scenes.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 239 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 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.

Model	Per session	Once invoked
Fable 5.1	$0.00043	$0.00239
Opus 5.5	$0.00017	$0.00096
Sonnet 5.5	$0.00009	$0.00048
Haiku 4.5	$0.00004	$0.00024

Measured 2mo ago against content hash b0bd3ce0aba7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

design-rigid-body-scenes 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 2mo 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.

knowledge/skills/design-rigid-body-scenes/SKILL.md · 17 lines

What it actually says