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-config-e-flags/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-config-e-flags)<a href="https://agentmods.dev/skills/flpccabral/mcp-browser/browser-mcp-config-e-flags"><img src="https://agentmods.dev/badge/skills/flpccabral/mcp-browser/browser-mcp-config-e-flags.svg" alt="Measured on agentmods" 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 | $0.00138 | $0.03583 |
| Opus 5 | $0.00069 | $0.01792 |
| Sonnet 5 | $0.00028 | $0.00717 |
| Haiku 4.5 | $0.00014 | $0.00358 |
Grade A, and why
browser-mcp-config-e-flags 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 6d 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 — 158 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Config e flags do MCP Browser
Catálogo de TODOS os eixos de configuração do servidor MCP de automação de browser: variáveis de ambiente, constantes hardcoded que agem como flags, config da extensão Chrome e defaults do agente. Cada fato abaixo foi verificado no código em 2026-07-17. Linhas podem derivar — re-verifique com os comandos da seção final antes de citar em PR/doc.
Termos usados uma vez:
- Truthy booleano = o padrão do repo para env vars booleanas:
valor.lower() in ("1", "true", "yes", "on")(ex.:src/browser_mcp/browser_manager.py:36). Qualquer outra coisa (inclusive"True "com espaço ou"y") éFalse.
Quando NÃO usar esta skill
- Setup do ambiente/venv/instalação → [[browser-mcp-build-e-ambiente]].
- Como iniciar/operar o servidor no dia a dia → [[browser-mcp-executar-e-operar]].
- Depurar comportamento errado em runtime → [[browser-mcp-playbook-de-depuracao]].
- Arquitetura geral / contratos entre módulos → [[browser-mcp-contrato-de-arquitetura]].
- Processo de mudança/commits → [[browser-mcp-controle-de-mudancas]].
Comando que regenera o catálogo
cd <raiz-do-repo>
grep -rn "os.environ\|os.getenv" src/ extension/ *.py
Resultado em 2026-07-12: 14 leituras de env, todas em src/browser_mcp/ (nenhuma em extension/ nem nos *.py da raiz). Se o grep retornar algo fora desta tabela, o catálogo está desatualizado — atualize esta skill.
AVISO CRÍTICO: .env NÃO é carregado automaticamente
python-dotenv está declarado como dependência (pyproject.toml:43), mas nenhum módulo chama load_dotenv:
grep -rn "dotenv" src/ *.py # → zero hits em código (2026-07-12)
Consequência: as env vars precisam chegar ao ambiente do processo — via config do cliente MCP (bloco env do mcpServers), via shell que lança o servidor, ou via hermes-mcp.sh (que hoje só faz unset PYTHONPATH/PYTHONSTARTUP/VIRTUAL_ENV e não exporta nada). Editar .env na raiz não tem efeito no servidor Python.
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.
- 6d ago First seen · 158 lines · 138 tokens per session scan A 07718d7e2031
browser-mcp-config-e-flags is a skill published in the GitHub repository flpccabral/mcp-browser (0 stars, last pushed 1mo ago), licensed MIT. It adds 138 tokens to every session and 3,583 once invoked, about $0.0007 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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