Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add 5dive-ai/5dive-plugins --skill use-browsergit clone --depth 1 https://github.com/5dive-ai/5dive-pluginsWrote 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/5dive-ai/5dive-plugins/use-browser)<a href="https://agentmods.dev/skills/5dive-ai/5dive-plugins/use-browser"><img src="https://agentmods.dev/badge/skills/5dive-ai/5dive-plugins/use-browser/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/5dive-ai/5dive-plugins/use-browser"><img src="https://agentmods.dev/badge/skills/5dive-ai/5dive-plugins/use-browser.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 | $0.00121 | $0.03722 |
| Opus 5.5 | $0.00048 | $0.01489 |
| Sonnet 5.5 | $0.00024 | $0.00744 |
| Haiku 4.5 | $0.00012 | $0.00372 |
Grade B, and why
use-browser 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 16d 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.
`sudo 5dive browser approvals policy set careful` puts the stop on all four, How it starts
The opening of the file, as written. The whole thing — 210 lines — stays where its author put it; the contents beside it link to each section on GitHub.
use-browser — snapshot, act by ref, verify; the owner says yes to pay/post/send/delete
5dive browser drives a real Chrome on this box. Give any page verb a URL and it picks
the profile itself: the host's one connected login, or the public profile (nothing logged
in) when there is none. A box with zero connected sites can still browse and act on any public
page. Connecting a site is only for the owner's own accounts — their inbox, their cart, their
repo — and that is the connect-site skill, not this one.
The loop: ONE snapshot per decision
5dive browser snapshot <url> --interactive # the refs you can act on
5dive browser act <url> --steps='[{"op":"click","selector":"ref=button/Star"}]'
5dive browser act <url> --steps='[{"op":"fill","selector":"ref=textbox/Title","value":"Bug: …"},
{"op":"click","selector":"ref=button/Save draft"}]' --expect='Draft saved'
- Snapshot the page with
--interactiveand pick refs from what it printed. Never invent a ref; a page you have not snapshotted is a page you are guessing about. A web app (Gmail) shows a loading screen first: add--wait-for='[role=main]'(ortext=<words>the loaded page has). Exit 76 is not the page — a loading screen or a--wait-forthat never came; run it again with a--wait-for, and do not ask anyone to log in. - Act on those refs. Steps are
goto fill type click wait_for select press, run in order, in one tab under one lease. Without a URL,actcontinues on the page a served browser holds. Usetypefor search boxes and autocompletes that react to keystrokes, andfillfor plain inputs:fillsets the value with no key presses, so a suggestion list never opens.typegoes key by key ("delay_ms", default 50); pick the suggestion with await_forand aclick. - Verify.
--expect=<regex>grades the page as the steps left it, re-read for up to 5 s so a toast counts. Without it,actonly says the steps ran — open thepage.pngit wrote before you tell anyone it worked.
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.
- 16d ago Changed · +21 lines 258b883c3a46
- 17d ago Changed · +72 lines cfb8eb45a25a
- 19d ago Changed · +31 lines 1e5925069a9c
- 20d ago Changed · +2 lines e6dec30383a9
- 21d ago Changed · +11 lines 0bb5fd67a8c0
- 23d ago First seen · 73 lines · 121 tokens per session scan B a9cc322e380b
use-browser is a skill published in the GitHub repository 5dive-ai/5dive-plugins (2 stars, last pushed today), licensed Apache-2.0. It adds 121 tokens to every session and 3,722 once invoked, about $0.0005 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 2026-09-25.
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