Borrowing it
Nothing to install: this file belongs to flpccabral/mcp-browser. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/flpccabral/mcp-browser/main/.claude/skills/browser-mcp-build-e-ambiente/SKILL.mdgit clone --depth 1 https://github.com/flpccabral/mcp-browserWrote 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/flpccabral/mcp-browser/browser-mcp-build-e-ambiente)<a href="https://agentmods.dev/skills/flpccabral/mcp-browser/browser-mcp-build-e-ambiente"><img src="https://agentmods.dev/badge/skills/flpccabral/mcp-browser/browser-mcp-build-e-ambiente/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/flpccabral/mcp-browser/browser-mcp-build-e-ambiente"><img src="https://agentmods.dev/badge/skills/flpccabral/mcp-browser/browser-mcp-build-e-ambiente.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00153 | $0.02793 |
| Opus 5 | $0.00077 | $0.01396 |
| Sonnet 5 | $0.00031 | $0.00559 |
| Haiku 4.5 | $0.00015 | $0.00279 |
Grade C, and why
browser-mcp-build-e-ambiente scanned grade C with 1 finding 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 9d 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.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
rm -rf dist/ How it starts
The opening of the file, as written. The whole thing — 244 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Build e ambiente do browser-mcp-server
Guia para recriar o ambiente de desenvolvimento do zero e reconhecer os sintomas de ambiente quebrado vs dívida conhecida do repositório.
Termos usados uma vez e reaproveitados:
- repo raiz — diretório que contém
pyproject.toml. - suíte completa —
pytest tests/(43 testes em 3 arquivos). - testes de browser — os testes de
tests/test_smoke.py,tests/test_tools.pye a maioria detests/test_agent.py, que iniciam um Chromium real viabrowser_manager.start().
Quando NÃO usar esta skill
| Necessidade | Use em vez desta |
|---|---|
| Rodar/operar o servidor MCP, modos de execução | browser-mcp-executar-e-operar |
| Catálogo completo de variáveis de ambiente e flags | browser-mcp-config-e-flags |
| Depurar comportamento em runtime | browser-mcp-playbook-de-depuracao |
| Entender falha histórica ou regressão | browser-mcp-arqueologia-de-falhas |
| Regras de arquitetura e limites de mudança | browser-mcp-contrato-de-arquitetura / browser-mcp-controle-de-mudancas |
| Validação/QA de uma mudança | browser-mcp-validacao-e-qa |
| Referência das ferramentas de automação | browser-automacao-referencia |
| Diagnóstico com ferramentas embutidas | browser-mcp-diagnosticos-e-ferramentas |
Requisitos
| Item | Valor | Fonte |
|---|---|---|
| Python mínimo | >= 3.11 |
pyproject.toml (requires-python) |
| Python no CI | matriz 3.11 / 3.12 / 3.13 | .github/workflows/ci.yml |
Python no .venv local |
3.14 (verificado em 2026-07-12) | .venv/bin/python --version |
| Build backend | hatchling | pyproject.toml [build-system] |
| Pacote | src/browser_mcp |
[tool.hatch.build.targets.wheel] |
| Entry point CLI | browser-mcp-server = browser_mcp.server:main |
[project.scripts] |
| Pytest | asyncio_mode = "auto", testpaths = ["tests"] |
[tool.pytest.ini_options] |
Diferença local vs CI: o .venv do repo roda Python 3.14, mas o CI só
testa 3.11–3.13 e os classifiers do pyproject.toml param em 3.13. Algo que
passa localmente pode se comportar diferente nas versões oficialmente
suportadas — na dúvida, trate 3.11–3.13 como o alvo de compatibilidade.
Confirme sua versão antes de investigar qualquer diferença de comportamento:
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.
- 9d ago First seen · 244 lines · 153 tokens per session scan C c7af4ad6a77c
browser-mcp-build-e-ambiente is a skill published in the GitHub repository flpccabral/mcp-browser (0 stars, last pushed 1mo ago), licensed MIT. It adds 153 tokens to every session and 2,793 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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