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 only-cli/oc --skill web-browsing-cligit clone --depth 1 https://github.com/only-cli/ocWrote 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/only-cli/oc/web-browsing-cli)<a href="https://agentmods.dev/skills/only-cli/oc/web-browsing-cli"><img src="https://agentmods.dev/badge/skills/only-cli/oc/web-browsing-cli/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/only-cli/oc/web-browsing-cli"><img src="https://agentmods.dev/badge/skills/only-cli/oc/web-browsing-cli.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00043 | $0.02150 |
| Opus 5.5 | $0.00017 | $0.00860 |
| Sonnet 5.5 | $0.00009 | $0.00430 |
| Haiku 4.5 | $0.00004 | $0.00215 |
Grade A, and why
web-browsing-cli 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 20d 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 — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.
only-cli
Renders a web page as a compact, numbered terminal view instead of raw HTML. A typical page is under 500 tokens.
npx --yes @only-cli/[email protected] open <url> compact view, numbered elements
npx --yes @only-cli/[email protected] do <n> follow link [n], or read it if [n] is text
npx --yes @only-cli/[email protected] find <query> where a string appears, or that place itself
when only one matches
npx --yes @only-cli/[email protected] next next ~500 tokens of the page already open
npx --yes @only-cli/[email protected] read <n> full text of region [n]
npx --yes @only-cli/[email protected] raw [url] whole page as markdown (--html for cleaned HTML)
npx --yes @only-cli/[email protected] login seed cookies (--cookie, --domain, --expires)
npx --yes @only-cli/[email protected] logout [session] forget a session: cookies and saved page
npx --yes @only-cli/[email protected] session ls list saved sessions (name, url, title)
npx --yes @only-cli/[email protected] session rm [name] forget a saved session: page and cookies
None of these except open/do/raw <url> fetch anything; they replay the page open already saved.
Site shortcuts
oc <site> <verb> [args] resolves to a URL and then behaves exactly like open on it, so it costs the same and reads the same. It saves guessing a URL shape and, on a few sites, points at the feed or public API that answers without a login. search on py, node, and ruby ranks the docs' own index locally, and on mdn asks the site's API; each prints a normal numbered result page.
oc hn top oc reddit sub ClaudeAI oc gh repo only-cli oc
oc wiki article Eiffel Tower oc wiki search anthropic oc wiki lang de Berlin
oc ddg search claude code oc so question 231767 oc learn doc azure/aks/what-is-aks
oc py library json oc mdn js Array/map oc node api fs
Sites: hn, reddit, gh, x, linkedin, ddg, bing, so, yahoo, yt, aws, gcp, learn, wiki, py, mdn, node, ruby, go, rust, java, php, cpp, ts, npm, pip, cargo, gem, docker. Name one by short name, bare name, or domain. The last argument takes every word after it, so a query or title needs no quoting. oc sites lists every site with its verbs, which is cheaper than guessing one. Reddit reads through its Atom feeds: a reddit.com page URL given to open meets a login wall or a 403, so use oc reddit post <id> or add /.rss to the URL, and keep Reddit calls under about ten a minute or the site answers 429.
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.
- 20d ago Changed cee9f1706bb3
- 22d ago Changed 186787fab15a
- 27d ago Changed e052ab0ee4a1
- 29d ago Changed eba15be0d2cb
- 1mo ago Changed · +15 lines 50a2e0cca2e2
- 1mo ago Changed b20b2798f522
- 1mo ago Changed 1f3cc7f0457e
- 1mo ago First seen · 100 lines · 43 tokens per session scan A 9a05f1dd4706
web-browsing-cli is a skill published in the GitHub repository only-cli/oc (542 stars, last pushed 3d ago), licensed MIT. It adds 43 tokens to every session and 2,150 once invoked, about $0.0002 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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