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antigravity-testing-kit: Instructions file for Gemini CLI

GEMINI.md

antigravity-testing-kit GEMINI.md is an instructions file for Gemini CLI from anhtester/antigravity-testing-kit. It costs 3,029 tokens per session, scanned A, original, MIT.

A set of rules for Gemini, an AI coding agent, to run browser-based test automation with Playwright, a browser testing tool. It also restricts code-changing Git commands and requires a visible desktop browser during debugging.

In plain words
What is it for?
Use it when writing or debugging automated browser tests, checking desktop layouts, and investigating failures through a visible browser before running tests headlessly in continuous integration.
Why use it?
It prevents local code from being overwritten by commands such as pull or reset and makes UI failures easier to inspect. It also enforces a consistent debugging order.

Instructions file for Gemini CLI

Written for Gemini CLI: the file is GEMINI.md.

This is anhtester/antigravity-testing-kit's own configuration. It tells Gemini CLI how to work on antigravity-testing-kit itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything antigravity-testing-kit configures →

not rated 149repo +2 3mo ago A scan 3,029 tokens original MIT
View source ↗ anhtester/antigravity-testing-kit anhtester.com
Reuse

Borrowing it

Nothing to install: this file belongs to anhtester/antigravity-testing-kit. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/anhtester/antigravity-testing-kit/main/GEMINI.md
Clone the repo
git clone --depth 1 https://github.com/anhtester/antigravity-testing-kit

Made for: Gemini CLI.

Wrote 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.

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README.md
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<a href="https://agentmods.dev/instructions/anhtester/antigravity-testing-kit/gemini-md"><img src="https://agentmods.dev/badge/instructions/anhtester/antigravity-testing-kit/gemini-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.

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<a href="https://agentmods.dev/instructions/anhtester/antigravity-testing-kit/gemini-md"><img src="https://agentmods.dev/badge/instructions/anhtester/antigravity-testing-kit/gemini-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 3,029 This file is loaded in full into every session.
When invoked 3,029 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.03029 $0.03029
Opus 5.5 $0.01212 $0.01212
Sonnet 5.5 $0.00606 $0.00606
Haiku 4.5 $0.00303 $0.00303

Measured 2mo ago against content hash d3b47b221ab9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

antigravity-testing-kit GEMINI.md 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 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.

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.

GEMINI.md · 244 lines

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.

GEMINI AI - GLOBAL AUTOMATION AGENT RULES

Scope: Áp dụng cho mọi tác vụ Test Automation do Gemini (Antigravity) hoạt động trong dự án này. Mục tiêu: Sinh ra test scripts hiệu quả, ổn định – dễ debug – dễ scale – CI friendly.

Git Pull Restriction Rule

  • Tuyệt đối KHÔNG dùng lệnh GIT làm thay đổi trạng thái code (như git pull, git checkout, git merge, git rebase, git reset) để lấy code hoặc thay đổi nhánh.
  • Vì có nhiều trường hợp code trên server chưa được cập nhật, việc pull code về sẽ ghi đè và làm sai toàn bộ phần code đang chỉnh sửa ở máy local.
  • Luôn giữ nguyên trạng thái code local hiện tại để làm việc.
  • Nếu cần file hoặc nội dung mới, hãy yêu cầu người dùng cung cấp thay vì tự ý dùng git.
  • Được phép dùng lệnh read-only: git status, git diff, git log — để kiểm tra trạng thái mà không thay đổi code.

Browser Rules (MANDATORY)

🖥️ Viewport & Mode

  • Tất cả UI debugging phải chạy với desktop viewport: 1920x1080
  • Bắt buộc mở browser thật khi debug (headed mode)
  • Headless mode chỉ được sử dụng sau khi test đã debug PASS trên UI
  • CI/CD pipeline được phép chạy headless mặc định

🔄 Thứ Tự Debug Bắt Buộc (Playwright MCP)

Khi dùng Playwright MCP để debug UI, LUÔN tuân theo thứ tự:

navigate → resize(1920×1080) → wait_for(page_load) → snapshot → interact → screenshot(on_fail)
  • KHÔNG gọi browser_navigate lại nếu đã đang ở đúng trang — tránh reload ngoài ý muốn
  • LUÔN gọi browser_resize(width=1920, height=1080) ngay sau browser_navigate
  • LUÔN verify page đã load xong trước khi lấy snapshot hoặc tương tác

📸 Screenshot & Snapshot

  • Dùng snapshot để phân tích DOM và xác định locator
  • Dùng screenshot để lưu bằng chứng khi test fail hoặc để báo cáo
  • Chụp screenshot ngay khi assertion fail để hỗ trợ truy vết lỗi
  • KHÔNG chụp screenshot tràn lan — chỉ khi cần thiết (fail / milestone quan trọng)

Tools

🛠️ Ưu Tiên Sử Dụng

Read the full file on GitHub · 244 lines

Changes

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.

  1. 2mo ago First seen · 244 lines · 3,029 tokens per session scan A d3b47b221ab9

Subscribe to this mod's changes

antigravity-testing-kit GEMINI.md is an instructions file published in the GitHub repository anhtester/antigravity-testing-kit (149 stars, last pushed 3mo ago), licensed MIT. It adds 3,029 tokens to every session, about $0.0121 per session on Opus 5.5. 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 2026-08-30.

Browser automationE2E testingTestinganhtesterantigravitykittest-automationtesting-tools
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