skills MCP — Casos de uso, Instalar & Demo ao vivo

Por que usar

Principais recursos

R-first: tidyverse idioms, {{data-masking}}, S3/S4 method guidance
Quarto authoring (documents, dashboards, websites)
R package development (devtools/usethis conventions)
Reproducible environments (renv, Positron)
Vendor-maintained quality bar
Compatible with Claude Code and Posit's own agents

Demo ao vivo

Como fica na prática

skills-skill-2.replay ▶ pronto

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Instalar

Escolha seu cliente

~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "skills-skill-2": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/posit-dev/skills",
        "~/.claude/skills/skills"
      ],
      "_inferred": true
    }
  }
}

Abra Claude Desktop → Settings → Developer → Edit Config. Reinicie após salvar.

~/.cursor/mcp.json · .cursor/mcp.json

{
  "mcpServers": {
    "skills-skill-2": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/posit-dev/skills",
        "~/.claude/skills/skills"
      ],
      "_inferred": true
    }
  }
}

Cursor usa o mesmo esquema mcpServers que o Claude Desktop. Config de projeto vence a global.

VS Code → Cline → MCP Servers → Edit

{
  "mcpServers": {
    "skills-skill-2": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/posit-dev/skills",
        "~/.claude/skills/skills"
      ],
      "_inferred": true
    }
  }
}

Clique no ícone MCP Servers na barra lateral do Cline, depois "Edit Configuration".

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "skills-skill-2": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/posit-dev/skills",
        "~/.claude/skills/skills"
      ],
      "_inferred": true
    }
  }
}

Mesmo formato do Claude Desktop. Reinicie o Windsurf para aplicar.

~/.continue/config.json

{
  "mcpServers": [
    {
      "name": "skills-skill-2",
      "command": "git",
      "args": [
        "clone",
        "https://github.com/posit-dev/skills",
        "~/.claude/skills/skills"
      ]
    }
  ]
}

O Continue usa um array de objetos de servidor em vez de um map.

~/.config/zed/settings.json

{
  "context_servers": {
    "skills-skill-2": {
      "command": {
        "path": "git",
        "args": [
          "clone",
          "https://github.com/posit-dev/skills",
          "~/.claude/skills/skills"
        ]
      }
    }
  }
}

Adicione em context_servers. Zed recarrega automaticamente ao salvar.

claude mcp add skills-skill-2 -- git clone https://github.com/posit-dev/skills ~/.claude/skills/skills

Uma linha só. Verifique com claude mcp list. Remova com claude mcp remove.

Casos de uso

Usos do mundo real: skills

How to scaffold a proper R package

👤 R developers starting a new package and wanting usethis/devtools conventions ⏱ ~30 min intermediate

Quando usar: You're tired of hand-writing DESCRIPTION, NAMESPACE, and roxygen2 boilerplate.

Pré-requisitos

Skill installed — git clone https://github.com/posit-dev/skills ~/.claude/skills/posit-skills
R + devtools — install.packages('devtools')

Fluxo

Scaffold

Use Posit R-package skill. Create a new package 'tidylaundry' with 2 exported functions: wash() and fold().✓ Copiado

→ Directory with DESCRIPTION, NAMESPACE, R/, tests/testthat/, README
Add roxygen

Add roxygen2 docs with @param, @return, @examples for each function.✓ Copiado

→ Inline docs that devtools::document() converts to man/
Smoke test

Write testthat tests covering happy path + one edge case each.✓ Copiado

→ Tests passing under devtools::test()

Resultado: A package that passes R CMD check on day one.

Armadilhas

Generated code uses base R where tidyverse would be clearer (or vice versa) — State the style preference upfront

Author a reproducible Quarto report

👤 Analysts publishing reports with code + narrative ⏱ ~45 min intermediate

Quando usar: You need to share analysis with stakeholders in a reproducible format.

Fluxo

Scaffold Quarto doc

Use Posit Quarto skill. Create a report template with YAML header, exec defaults, and Tufte theme.✓ Copiado

→ .qmd file with chunked code + narrative
Fill with analysis

Load data/sales.csv and produce a monthly revenue chart with ggplot + a 2-paragraph insight.✓ Copiado

→ Chunks that render to HTML/PDF
Pin environment

Capture versions with renv::snapshot().✓ Copiado

→ renv.lock produced

Resultado: A reproducible report anyone can re-render given the data.

Armadilhas

Quarto render fails silently on missing system deps — Check quarto check output; common issue is missing tinytex or chromium for PDF

Scaffold a Shiny app with modern patterns

👤 R developers building internal apps ⏱ ~40 min intermediate

Quando usar: New Shiny app, want modules + bslib theming from the start.

Fluxo

Scaffold

Use Posit Shiny skill. Create an app with bslib::page_fluid, 2 modules: upload + plot.✓ Copiado

→ app.R with module files in R/
Add reactive flow

Wire upload module's reactive output into plot module's input.✓ Copiado

→ Reactives connected; app runs

Resultado: A modular Shiny app that's easy to extend.

Combinações

Combine com outros MCPs para 10× de alavancagem

skills-skill-2 + claude-code-skill-factory-skill

Use Posit skills as reference patterns when authoring new skills

Show me the structure of a Posit skill, then /build a parallel skill for Julia package dev.✓ Copiado

Ferramentas

O que este MCP expõe

Ferramenta	Entradas	Quando chamar
R package scaffolding	-	New package
Quarto authoring	-	Reports and docs
Shiny patterns	-	Internal app dev
Reproducibility (renv)	-	Pinning environment

Custo e limites

O que custa rodar

Cota de API: None
Tokens por chamada: Varies per skill
Monetário: Free
Dica: R package scaffolds are small token-wise; Quarto with data analysis can balloon.

Segurança

Permissões, segredos, alcance

Armazenamento de credenciais: No credentials

Saída de dados: None by default

Solução de problemas

Erros comuns e correções

Generated R code uses outdated tidyverse APIs

State target package versions: 'dplyr 1.1+, tidyselect 1.2+'

Skill not triggered on R contexts

Claude auto-triggers on file extensions; explicitly invoke 'Use Posit R skills ...' to guarantee

Alternativas

skills vs. outros

Alternativa	Quando usar	Troca
Hand-written with usethis	You already know the conventions cold	More control, slower setup

Mais

Recursos

📖 Leia o README oficial no GitHub

🐙 Ver issues abertas

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