construir-cena

construir-cena is a skill for Claude Code from KevinInoCol/coppeliasim-mcp. It costs 95 tokens per session (1,147 once invoked), scanned A, original, MIT.

A guide to creating CoppeliaSim scenes with code, including floors, walls, openings, and obstacles. It explains how separate object settings control physics, collisions, and sensor visibility.

In plain words
What is it for?
Use it when generating a robot environment or checking that the robot fits and can reach every area.
Why use it?
It helps prevent scenes from collapsing, robots from passing through walls, and proximity sensors from missing objects.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the coppeliasim plugin — 9 skills, 1 MCP server shipped together

Good fit Use it when generating a robot environment or checking that the robot fits and can reach every area.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/kevininocol/coppeliasim-mcp/construir-cena
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 KevinInoCol/coppeliasim-mcp --skill construir-cena
Clone the repo
git clone --depth 1 https://github.com/KevinInoCol/coppeliasim-mcp

Made for: Claude Code.

Or install coppeliasim, the plugin that ships this one along with the rest of its 9 skills, 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 construir-cena

README.md
[![agentmods](https://agentmods.dev/badge/skills/kevininocol/coppeliasim-mcp/construir-cena/github.svg)](https://agentmods.dev/skills/kevininocol/coppeliasim-mcp/construir-cena)
Your own site
<a href="https://agentmods.dev/skills/kevininocol/coppeliasim-mcp/construir-cena"><img src="https://agentmods.dev/badge/skills/kevininocol/coppeliasim-mcp/construir-cena/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.

agentmods 80×15 button for construir-cena

Your own site · 80×15
<a href="https://agentmods.dev/skills/kevininocol/coppeliasim-mcp/construir-cena"><img src="https://agentmods.dev/badge/skills/kevininocol/coppeliasim-mcp/construir-cena.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,147 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00095 $0.01147
Opus 5 $0.00048 $0.00574
Sonnet 5 $0.00019 $0.00229
Haiku 4.5 $0.00010 $0.00115

Measured 11d ago against content hash 20b6d6cb0acb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

construir-cena 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.

skills/construir-cena/SKILL.md · 104 lines

How it starts

The opening of the file, as written. The whole thing — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Construir uma cena por código

As três propriedades, e por que se confundem

Um objeto do CoppeliaSim tem três chaves independentes. Quase todo problema de cena vem de misturá-las:

Propriedade O que decide Quando está errado
dynamic se a física move (cai, é empurrado) o cenário desaba no Play
respondable se outros corpos colidem com ele o robô atravessa as paredes
detectable se um sensor de proximidade enxerga o sensor "não funciona"

Uma parede de cenário é não dinâmica, respondable e detectável:

sim.setBoolProperty(handle, "dynamic", False)
sim.setBoolProperty(handle, "respondable", True)
sim.setObjectInt32Param(handle, sim.shapeintparam_respondable_mask, 0xFFFF)
sim.setBoolProperty(handle, "detectable", True)

detectable é a causa número um de "meu sensor não detecta nada". Não se herda nem se ativa sozinha: um objeto recém-criado é invisível para todo sensor de proximidade até você marcar.

Chãos decorativos não podem ser sólidos

Se você pinta o chão de cada cômodo com uma caixa fina, essa caixa não pode ser respondable nem colidível. Um chão de 1 cm é um degrau de 1 cm em cada vão, e o robô tropeça nele ou trava.

Deixe como pura decoração: não dinâmicos, não respondables, não detectáveis. O robô rola sobre o terreno de verdade, não sobre a camada de cor.

O chão padrão tem 5 x 5 m

O /Floor vem com a cena e é pequeno para quase qualquer planta. Se sua cena for maior, apague e crie um terreno do tamanho necessário, ou o robô vai cair da borda no meio do percurso.

Paredes com vãos

Uma parede com porta não é um objeto: são dois trechos com um buraco no meio. Gere os trechos a partir da linha completa e da lista de vãos, em vez de colocar cada pedaço na mão — assim os números saem de um lugar só e mover uma porta não obriga a recalcular nada:

def trechos_de_muro(inicio, fim, portas):
    """Devolve os pedaços de parede entre início e fim, pulando os vãos."""

Read the full file on GitHub · 104 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. 11d ago First seen · 104 lines · 95 tokens per session scan A 20b6d6cb0acb

Subscribe to this mod's changes

construir-cena is a skill published in the GitHub repository KevinInoCol/coppeliasim-mcp (0 stars, last pushed 16d ago), licensed MIT. It adds 95 tokens to every session and 1,147 once invoked, about $0.0005 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.

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