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 thewolffish/wolffish-app --skill browsergit clone --depth 1 https://github.com/thewolffish/wolffish-appWrote 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/thewolffish/wolffish-app/browser)<a href="https://agentmods.dev/skills/thewolffish/wolffish-app/browser"><img src="https://agentmods.dev/badge/skills/thewolffish/wolffish-app/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/thewolffish/wolffish-app/browser"><img src="https://agentmods.dev/badge/skills/thewolffish/wolffish-app/browser.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 738 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00056 | $0.05278 |
| Opus 5.5 | $0.00022 | $0.02111 |
| Sonnet 5.5 | $0.00011 | $0.01056 |
| Haiku 4.5 | $0.00006 | $0.00528 |
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 29d 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 — 705 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Browser Automation
This is the clean-room browser: a Playwright-launched Chromium (or Firefox/WebKit) with its own profile — none of the user's logins, cookies, tabs or history. When the user's real browser is connected through the browser-extension capability (ext_* tools), that is the default for anything logged-in, anything on their own tabs, and anything that should look like them. Reach for this one for isolated sessions, headless runs, PDF/print of your own HTML (browser_pdf), and when no extension browser is connected.
Interface
- Tools: 25 tools for launching, navigating, interacting, extracting, and managing browser sessions
- Engine: Playwright (Chromium by default, Firefox and WebKit also available)
- Sessions: each
browser_launchcreates an isolated session; multiple sessions can run simultaneously - Tabs: each session can have multiple tabs via
browser_multi_tab
Safety — READ BEFORE EVERY USE
Terms of Service
ALWAYS warn the user before automating any website that this may violate that site's Terms of Service. Many platforms (Google, Facebook, LinkedIn, Amazon, Twitter/X, Instagram, banking sites) explicitly prohibit automated access. Violating ToS can result in account suspension or legal action. Let the user decide whether to proceed.
Bot Detection
Browser automation is detectable by modern anti-bot systems (Cloudflare, reCAPTCHA, DataDome, PerimeterX, Akamai). Sites fingerprint automated browsers via WebDriver flags, headless detection, canvas fingerprinting, and behavioral analysis. Never promise undetectable automation.
CAPTCHAs
If a site presents a CAPTCHA, STOP and inform the user. Never attempt to solve or bypass CAPTCHAs.
Financial and Sensitive Sites
NEVER automate login to banking, financial, healthcare, or government sites unless the user explicitly acknowledges the risk after being warned. NEVER automate actions that could result in financial transactions (purchases, transfers, payments) without explicit per-action user approval.
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.
- 29d ago Changed · -40 lines · +28 tokens per session 57de9031e14a
- 1mo ago Changed · +2 lines b47c02e59c78
- 1mo ago Changed · +4 lines d610586677d6
- 1mo ago First seen · 739 lines · 28 tokens per session scan A 3d08faac1d91
browser is a skill published in the GitHub repository thewolffish/wolffish-app (5 stars, last pushed 21d ago), licensed MIT. It adds 56 tokens to every session and 5,278 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 2026-08-31.
Other skills, from other repositories
agent-computer-use
REQUIRED for any task that involves operating a desktop application — opening apps, clicking buttons, typing into fields, pressing keys, scrolling, dragging, reading what's on screen, moving or resizing windows, or verifying state after an action. Always use the agent-cu CLI commands (open, snapshot, click, type, key…
macos-use
GUI control for macOS apps via mediar-ai's mcp-server-macos-use. Click, type, scroll, key-press, open apps — driven by accessibility tree, works in non-interactive Claude Code mode. Use this for any Sutando task that needs to drive another macOS application (Safari, Zoom, Mail, Finder, etc.).
test-ui
Test the BrowserOS app extension UI by starting the dev environment and visually verifying changes via CDP. Covers the new tab page (left sidebar — Home, Scheduled Tasks, Settings, etc.) and the right side panel (chat interface). Use after making UI changes to apps/app/.
browseros-neo
The user's dedicated browser for agents, a real browser signed into their accounts, with live logins and a persistent profile. Use it for any task that touches a website or browser (open, read, act, fill, sign in, download, verify). The user installed it precisely so agents default here unprompted, over in-app browser…
ai-sdk
Answer questions about the AI SDK and help build AI-powered features. Use when developers: (1) Ask about AI SDK functions like generateText, streamText, ToolLoopAgent, embed, or tools, (2) Want to build AI agents, chatbots, RAG systems, or text generation features, (3) Have questions about AI providers (OpenAI…
browseros-neo
The user's dedicated browser for agents — a real browser signed into their accounts, with live logins and a persistent profile. Use it for any task that touches a website or browser (open, read, act, fill, sign in, download, verify). The user installed it precisely so agents default here unprompted — over in-app…