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 agentmods add skills/hk-hub/agentskills/browser-skillnpx skills add HK-hub/AgentSkills --skill browser-skillgit clone --depth 1 https://github.com/HK-hub/AgentSkillsWrote 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/hk-hub/agentskills/browser-skill)<a href="https://agentmods.dev/skills/hk-hub/agentskills/browser-skill"><img src="https://agentmods.dev/badge/skills/hk-hub/agentskills/browser-skill.svg" alt="Measured on agentmods" 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 | $0.00064 | $0.04445 |
| Opus 5 | $0.00032 | $0.02223 |
| Sonnet 5 | $0.00013 | $0.00889 |
| Haiku 4.5 | $0.00006 | $0.00445 |
Grade A, and why
browser-skill 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 5d 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 — 304 lines — stays where its author put it; the contents beside it link to each section on GitHub.
browser-skill
Drive the user's real Chromium browser (with their logins and cookies) through the bsk CLI. The extension opens an isolated Agent Window for automation; the user's normal windows stay protected unless you explicitly borrow a tab.
When to use
- Open pages, read titles/text, scrape structured data from sites the user can already access
- Fill forms, click through multi-step flows, smoke-test a UI change
- Understand pages with
bsk snapshotfirst; usebsk get-htmlorbsk screenshotonly when the snapshot is insufficient - Operate on a specific user tab they point you at (after
bsk tab borrow)
When NOT to use
- Tasks with no browser involved (files, APIs, databases only)
- Installing or configuring the extension (point the user to setup docs instead)
- Credential harvesting — never run
bsk evaluateon banking, SSO, or password-manager pages to extract tokens, cookies, or secrets - Long-lived control of a user's personal login window — borrow only for the immediate step, then
bsk tab returnor end the session - Replacing the user's manual browsing when they only wanted an explanation
Prerequisites
bskonPATH(Rust CLI from browser-skill)- browser-skill extension loaded in Chromium and connected (popup shows green)
- Any
bskcommand auto-starts background services as needed; usebsk doctorif anything fails
Mandatory workflow
Every automation task must follow this lifecycle. Do not rely on idle timeouts (default session idle is 5 minutes).
1. bsk session start → capture the 4-letter session id printed on stdout
2. … every tool command … → always pass --session <id>
3. bsk session stop <id> → REQUIRED when done (even on error paths)
Optional: bsk session start --browser <instance-id-or-label> when multiple browsers are connected (bsk browsers / error output lists them).
Emergency cleanup: bsk session stop --all or the Agent Window overlay Stop all.
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.
- 5d ago First seen · 304 lines · 64 tokens per session scan A 7556a415ec61
browser-skill is a skill published in the GitHub repository HK-hub/AgentSkills (6 stars, last pushed 17d ago), licensed MIT. It adds 64 tokens to every session and 4,445 once invoked, about $0.0003 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.
Other skills, from other repositories
playwright-pom-discovery
Use when building or extending a Page Object Model (POM) for the Opik E2E suite (under testsendtoend/e2e/pom/) and you need to choose stable selectors against the live UI. Walks through seeding required state, exploring the running page with the Playwright MCP (accessibility snapshot + data-testid enumeration)…
search-params
URL search param and hash state management. Use when adding or modifying URL search params, working with useSearchParams, setSearchParams, useSearchParamState, or navigate() with query strings or hash fragments, or fixing browser back/forward button issues.
southwest
Search Southwest Airlines fares and points pricing via Patchright browser automation. SW is not in any GDS or API. Covers all fare classes, Companion Pass value, and fare drop monitoring.
vrbo
Search VRBO (Vrbo / Expedia Group) vacation rentals including entire homes, condos, and cabins via Patchright browser automation. VRBO sits behind Akamai Bot Manager so plain HTTP and standard Playwright get a 429 bot wall. Use for whole-home or group stays, multi-bedroom rentals, and Airbnb-vs-VRBO comparisons.…
agent-browser
Automates browser interactions for web testing, form filling, screenshots, and data extraction. Use when the user needs to navigate websites, interact with web pages, fill forms, take screenshots, test web applications, or extract information from web pages.
american-airlines
Check American Airlines AAdvantage balance, elite status, and loyalty points via Patchright. Handles email 2FA with 6-box code entry. Uses persistent browser profiles to skip 2FA on subsequent runs.