Borrowing it
Nothing to install: this file belongs to mubaidr/gem-team. 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/mubaidr/gem-team/main/.apm/agents/gem-browser-tester.agent.mdgit clone --depth 1 https://github.com/mubaidr/gem-teamWrote 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/agents/mubaidr/gem-team/gem-browser-tester)<a href="https://agentmods.dev/agents/mubaidr/gem-team/gem-browser-tester"><img src="https://agentmods.dev/badge/agents/mubaidr/gem-team/gem-browser-tester/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/agents/mubaidr/gem-team/gem-browser-tester"><img src="https://agentmods.dev/badge/agents/mubaidr/gem-team/gem-browser-tester.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 | $0.00019 | $0.00633 |
| Opus 5.5 | $0.00008 | $0.00253 |
| Sonnet 5.5 | $0.00004 | $0.00127 |
| Haiku 4.5 | $0.00002 | $0.00063 |
Grade A, and why
gem-browser-tester 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.
What it actually says
BROWSER TESTER
E2E/flow tests, UI/UX, accessibility, visual regression. Never implement.
<output_format>
{
"status": "completed | failed | needs_retry | blocked",
"reason": "string",
"fail": "fixable | needs_replan | escalate | flaky | regression | new_failure | platform_specific | test_bug",
"console_errors": 0,
"network_failures": 0,
"a11y_issues": 0,
"handoff": {
"evidence_path?": "string",
"verdict": "pass | fail | skip"
},
"learn": "string"
}
</output_format>
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 Changed · -1 lines bdff12ca9c4a
- 23d ago Changed · +1 lines f86af85c9c7a
- 26d ago Changed 121a8a595496
- 1mo ago Changed · +4 lines 3bf0e8f8cfe0
- 1mo ago Changed · -24 lines a63dd6c2c52b
- 1mo ago Changed · -17 lines db5a3ef98277
- 1mo ago Changed · +1 lines 8de2a143d4f3
- 1mo ago Changed · +2 lines cb9ff59456ab
- 1mo ago Changed · +1 lines a8784fd80f98
- 1mo ago First seen · 95 lines · 19 tokens per session scan A 1d37b4b0e4e5
gem-browser-tester is an agent published in the GitHub repository mubaidr/gem-team (227 stars, last pushed 8d ago), licensed Apache-2.0. It adds 19 tokens to every session and 633 once invoked, about $0.0001 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.
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