Borrowing it
Nothing to install: this file belongs to Mhrnqaruni/mcp-playwright-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/Mhrnqaruni/mcp-playwright-browser/master/GEMINI.mdgit clone --depth 1 https://github.com/Mhrnqaruni/mcp-playwright-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/mhrnqaruni/mcp-playwright-browser/gemini-md)<a href="https://agentmods.dev/instructions/mhrnqaruni/mcp-playwright-browser/gemini-md"><img src="https://agentmods.dev/badge/instructions/mhrnqaruni/mcp-playwright-browser/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.
<a href="https://agentmods.dev/instructions/mhrnqaruni/mcp-playwright-browser/gemini-md"><img src="https://agentmods.dev/badge/instructions/mhrnqaruni/mcp-playwright-browser/gemini-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 | $0.00957 | $0.00957 |
| Opus 5 | $0.00478 | $0.00478 |
| Sonnet 5 | $0.00191 | $0.00191 |
| Haiku 4.5 | $0.00096 | $0.00096 |
Grade A, and why
mcp-playwright-browser 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 8d 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 — 75 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Gemini Project Instructions (Auto)
Always Use MCP Server
Use MCP server playwrightBrowser for all browser actions.
Reading CV / Job Files
- Prefer MCP file tools (avoid built-in
ReadFile/Shellbecause workspace restrictions can fail unexpectedly):- Use
files.list_dirto locate CV/cover letter/jobdescription underApplied Jobs/<job-folder>/. - Use
files.read_textfor*.md/*.txt. - Use
files.read_pdf_textfor*.pdf. - If the needed info is missing/unreadable: ask the user (do not hunt/scan across folders).
- Use
DOM vs Visual
- Prefer DOM actions first.
- Set capture profile at start of work:
- Call
browser.set_capture_profilewithprofile: "light"unless the user asks for debug-level detail.
- Call
- Follow this capture ladder (least expensive first):
browser.snapshotwithdetail: "low"browser.listwithdetail: "low"browser.query_domwithdetail: "low"for targeted readsbrowser.take_snapshotwithdetail: "low"only whenuidtargeting is neededbrowser.visual_snapshotwithdetail: "low"only as last resort
- Use
detail: "high"only when low detail is insufficient. - Do not repeat
browser.take_snapshot/browser.visual_snapshotunless one of these is true:domVersionchanged- you intentionally scrolled and need a fresh scan of newly visible content
- MCP returned
STALE_REF - target cannot be found after
browser.wait_for - user explicitly asked for a fresh visual check
- If
browser.listreportsneedsScrollForMore: trueorhasOffViewportCandidates: true, scroll and runbrowser.listagain before concluding the page is complete.
Element IDs (Critical)
elementIds are short-lived. After any click, dropdown, or navigation:- call
browser.list(orbrowser.visual_snapshot) again - do not reuse old element IDs
- call
- Waiting: use
browser.wait_for(selector/text/uid) instead of fixed sleeps.
Multi-Tab / Popups
- Popup tools do not auto-select new tabs by default.
- If a popup/new tab opens, always use:
browser.list_pagesbrowser.select_pagebrowser.close_page
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.
- 8d ago First seen · 75 lines · 957 tokens per session scan A 82d7a856083e
mcp-playwright-browser GEMINI.md is an instructions file published in the GitHub repository Mhrnqaruni/mcp-playwright-browser (0 stars, last pushed 6mo ago), licensed ISC. It adds 957 tokens to every session, about $0.0048 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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