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 arch3rPro/Ark-Space --skill browsergit clone --depth 1 https://github.com/arch3rPro/Ark-SpaceWrote 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/arch3rpro/ark-space/browser)<a href="https://agentmods.dev/skills/arch3rpro/ark-space/browser"><img src="https://agentmods.dev/badge/skills/arch3rpro/ark-space/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/arch3rpro/ark-space/browser"><img src="https://agentmods.dev/badge/skills/arch3rpro/ark-space/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 | $0.00047 | $0.00811 |
| Opus 5.5 | $0.00019 | $0.00324 |
| Sonnet 5.5 | $0.00009 | $0.00162 |
| Haiku 4.5 | $0.00005 | $0.00081 |
Grade A, and why
browser 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 1mo 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 — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Browser
Use the installed arks CLI or ArkSpace MCP tools. Prefer the web Skill when Search or Fetch can produce the evidence without browser state.
Readiness
- Run
arks --version. If unavailable, explain that ArkSpace CLI is required and ask before changing the user's environment. - Run
arks doctor --jsonwhen Firecrawl readiness is unknown. If credentials are missing, direct the human to runarks setupin a trusted local terminal. Never ask for an API key in conversation or place one in a command argument. - Ask before changing configuration or the user's environment. Explain that an open Firecrawl browser session accrues credits until it is closed or expires.
Session lifecycle
Open only the exact initial HTTP(S) URL needed:
{
"protocolVersion": 1,
"capability": "browser.open",
"input": {
"url": "https://example.com",
"ttlSeconds": 600,
"activityTtlSeconds": 300,
"timeoutMs": 30000
}
}
Keep the returned data.sessionId. It is an opaque handle bound to the API key that created the session. Never substitute another account or Provider. ArkSpace intentionally does not return CDP or live-view authority URLs.
Use browser.snapshot before acting. Prefer interactiveOnly: true. The snapshot returns bounded @eN references for the current page state.
Actions and confirmation
browser.interact performs exactly one structured action:
navigatewith an exact HTTP(S) URL;clickwith a current@eNreference;fillwith a current@eNreference and text;presswith an allowed key;scrollwith direction and bounded pixels;scrapeto read current page content.
Before each action, state the target and intended effect. Obtain explicit user approval before setting "confirmed": true. A click or key press can submit a form, purchase an item, publish content, change account state, or trigger another irreversible effect. Do not infer approval from an earlier request when the concrete target or effect has changed.
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 1mo ago Changed · +3 lines fb0d52b3b20e
- 1mo ago First seen · 67 lines · 47 tokens per session scan A 20a06d72d62c
browser is a skill published in the GitHub repository arch3rPro/Ark-Space (1 stars, last pushed 3d ago), licensed MIT. It adds 47 tokens to every session and 811 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 2026-09-10.
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