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-executar-e-operar/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-executar-e-operar)<a href="https://agentmods.dev/skills/flpccabral/mcp-browser/browser-mcp-executar-e-operar"><img src="https://agentmods.dev/badge/skills/flpccabral/mcp-browser/browser-mcp-executar-e-operar/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-executar-e-operar"><img src="https://agentmods.dev/badge/skills/flpccabral/mcp-browser/browser-mcp-executar-e-operar.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 | $0.00152 | $0.04115 |
| Opus 5.5 | $0.00061 | $0.01646 |
| Sonnet 5.5 | $0.00030 | $0.00823 |
| Haiku 4.5 | $0.00015 | $0.00411 |
Grade B, and why
browser-mcp-executar-e-operar scanned grade B 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 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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
no arquivo com `chmod 0600` e loga `[WS-SERVER] Token gerado em ...`. How it starts
The opening of the file, as written. The whole thing — 323 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Executar e operar o browser-mcp-server
Runbook para subir e operar o sistema nos seus 3 modos, com a anatomia de cada comando e as convenções de saída. Tudo abaixo foi verificado contra o código em 2026-07-18.
Quando NÃO usar esta skill
| Situação | Skill correta |
|---|---|
| Setup do zero (venv, dependências, Playwright install) | browser-mcp-build-e-ambiente |
| Catálogo completo de env vars e flags | browser-mcp-config-e-flags |
| Algo não conecta / falha em runtime | browser-mcp-playbook-de-depuracao |
| Por que existem 3 modos, trade-offs de arquitetura | browser-mcp-contrato-de-arquitetura |
| Medir tráfego de rede / console da página | browser-mcp-diagnosticos-e-ferramentas |
| Teoria dos substratos e semântica das tools | browser-automacao-referencia |
| Catálogo/medição das 39 tools (dump_tools.py, contagem) | browser-mcp-diagnosticos-e-ferramentas |
Mapa dos 3 modos
| Modo | Browser controlado | Como ativar | Processo(s) |
|---|---|---|---|
| 1. Playwright (padrão) | Chromium lançado pelo servidor | Nada — é o default ao subir o servidor | python -m browser_mcp.server |
| 2. CDP | Chrome já aberto pelo usuário | Tool browser_connect_to_existing |
Servidor MCP + Chrome com --remote-debugging-port |
| 3. Extensão | Chrome real do usuário (sessão, cookies) | Tool browser_connect_to_extension |
Servidor MCP (ou WS standalone) + extensão instalada |
O servidor MCP fala stdio com o client (Claude, Hermes etc.). O WebSocket na porta 8765 é um canal paralelo só para a extensão Chrome.
Modo 1 — Playwright (padrão)
Comando confiável
cd /caminho/do/repo/mcp_browser
.venv/bin/python -m browser_mcp.server
Console script browser-mcp-server (corrigido em 2026-07-18)
pyproject.toml:62 registra browser-mcp-server = "browser_mcp.server:main".
Até 2026-07-18 isto estava quebrado: main era async def, então o entry
point síncrono só criava uma coroutine e saía. Foi corrigido — hoje main é
síncrona (server.py:84) e faz asyncio.run(_run_server()) (server.py:91).
Tanto browser-mcp-server quanto python -m browser_mcp.server funcionam.
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.
- 2mo ago First seen · 323 lines · 152 tokens per session scan B 492924027781
browser-mcp-executar-e-operar is a skill published in the GitHub repository flpccabral/mcp-browser (0 stars, last pushed 3mo ago), licensed MIT. It adds 152 tokens to every session and 4,115 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
browser-mcp-executar-e-operar compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| browser-mcp-executar-e-operarflpccabral/mcp-browser | Skill | 0 | 3mo ago | MIT | B | 152 | Claude Code |
| interactive-loginyc-software/qm | Skill | 16k | yesterday | MIT | A | 46 | Claude Code, Codex |
| pinchtab-mcppinchtab/pinchtab | Skill | 11k | 10d ago | MIT | A | 52 | Claude Code, Codex |
| azure-messaging-webpubsub-javamicrosoft/skills | Skill | 3.2k | yesterday | MIT | A | 43 | Claude Code |
| cua-driverdavidondrej/skills | Skill | 4.3k | 3d ago | MIT | A | 68 | Claude Code, Codex |
| open-design-browsercompozy/compozy | Skill | 2.8k | yesterday | MIT | A | 56 | Claude Code, Codex |
| southwestborski/travel-hacking-toolkit | Skill | 895 | yesterday | MIT | A | 40 | Claude Code |