Borrowing it
Nothing to install: this file belongs to yadenmustopa/mcp-environtment-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/yadenmustopa/mcp-environtment-browser/master/AGENTS.mdgit clone --depth 1 https://github.com/yadenmustopa/mcp-environtment-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/instructions/yadenmustopa/mcp-environtment-browser/agents-md)<a href="https://agentmods.dev/instructions/yadenmustopa/mcp-environtment-browser/agents-md"><img src="https://agentmods.dev/badge/instructions/yadenmustopa/mcp-environtment-browser/agents-md/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/instructions/yadenmustopa/mcp-environtment-browser/agents-md"><img src="https://agentmods.dev/badge/instructions/yadenmustopa/mcp-environtment-browser/agents-md.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 | $0.02683 | $0.02683 |
| Opus 5 | $0.01341 | $0.01341 |
| Sonnet 5 | $0.00537 | $0.00537 |
| Haiku 4.5 | $0.00268 | $0.00268 |
Grade B, and why
mcp-environtment-browser AGENTS.md 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 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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
| Security-conscious | Tidak ada password via chat. Manual sudo kalau perlu. Backup sebelum destructive op. | How it starts
The opening of the file, as written. The whole thing — 225 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent Strict Guidelines — mcp-environtment-browser
WAJIB BACA sebelum agent (atau developer) melakukan perubahan apa pun di repo ini. Dokumen ini meng-encode prinsip owner (yadenmustopa) supaya agent tidak over-engineer dan tetap di jalur paling sederhana.
🚨 The Golden Rule
Default ke opsi paling sederhana yang memenuhi goal. Jangan tambahkan fitur, layer, atau abstraksi tanpa trigger eksplisit dari owner. Jika ragu, pilih yang lebih simple — bukan yang lebih powerful.
1. Batasan Strategi (JANGAN DIUBAH TANPA DISKUSI OWNER)
❌ TIDAK BOLEH — sudah diputuskan di K1-K7
| Topik | Keputusan tetap | Jangan |
|---|---|---|
| Per-tab metric | browser.new_page() = 1 tab |
❌ Jangan ganti ke network request / wall-clock / action event |
| Credential location | Local (libsecret) | ❌ Jangan pindah ke server tanpa trigger (lihat roadmap_migration.md §Phase 2) |
| Browser location | Local (Playwright) | ❌ Jangan host di cloud / pakai browser farm |
| License tier (Phase 1) | Dev/free only | ❌ Jangan tambah tier baru / Stripe / billing logic |
| Anti-piracy | Binary distro + license gate | ❌ Jangan tambah obfuscation / DRM / TPM di Phase 1 |
| Counter sync | Real-time per-tab | ❌ Jangan ganti ke batch sync (akan weaken license gate) |
| Hardware-bound key | TIDAK untuk Phase 1 | ❌ Jangan tambah TPM2/scrypt master key di Phase 1 |
| Stack | Python + FastAPI + Click + Playwright | ❌ Jangan switch ke Node.js/Go/Rust |
| Lisensi repo | MIT | ❌ Jangan ganti ke proprietary/BSL |
| Branch default | master |
❌ Jangan rename ke main |
| Strategi | A. Local-first + license-only | ❌ Jangan lompat ke Strategi D |
✅ BOLEH dengan diskusi owner
- Bug fix yang tidak改变 arsitektur
- Deps upgrade yang aman (patch version)
- Test coverage improvement
- Doc clarification (no decision change)
- Refactor internal yang tetap di Strategi A
⚠️ BUTUH PERSETUJUAN EKSPLISIT OWNER
- Tambah MCP tool baru (cek dulu apakah
smart_*yang sudah ada cukup) - Tambah credential type baru (Phase 1: 4 types, jangan expand tanpa trigger)
- Tambah backend/platform support (Windows/macOS = Phase 2)
- Tambah workflow logic baru (login flow per target)
- Performance optimization (caching, prefetch, dll)
- Security hardening di luar scope K1-K7
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 · 225 lines · 2,683 tokens per session scan B b3db1db07822
mcp-environtment-browser AGENTS.md is an instructions file published in the GitHub repository yadenmustopa/mcp-environtment-browser (0 stars, last pushed 24d ago), licensed MIT. It adds 2,683 tokens to every session, about $0.0134 per session on Opus 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.
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