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 yonatangross/orchestkit --skill browser-toolsgit clone --depth 1 https://github.com/yonatangross/orchestkitWrote 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/yonatangross/orchestkit/browser-tools)<a href="https://agentmods.dev/skills/yonatangross/orchestkit/browser-tools"><img src="https://agentmods.dev/badge/skills/yonatangross/orchestkit/browser-tools/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/yonatangross/orchestkit/browser-tools"><img src="https://agentmods.dev/badge/skills/yonatangross/orchestkit/browser-tools.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to high
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 →
- high Rogue Agent · line 176 Skill modifies its own code, configuration, or behavior at runtime. Self-modification enables an agent to escalate privileges, disable safety constraints, or install persistent backdoors.Fix: Prevent the skill from modifying its own code, SKILL.md, or configuration files. Treat skill files as read-only at runtime.
- medium Agent Snooping · line 38 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Excessive Agency · line 255 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
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 | $0.00044 | $0.05989 |
| Opus 5.5 | $0.00018 | $0.02396 |
| Sonnet 5.5 | $0.00009 | $0.01198 |
| Haiku 4.5 | $0.00004 | $0.00599 |
Grade A, and why
browser-tools scanned grade A 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 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- **`cookies set --curl <file>`**: auto-detects JSON, cURL, and Cookie-header formats for bulk cookie import. Treat cookie-set as auth-state injection. How it starts
The opening of the file, as written. The whole thing — 302 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Browser Tools — Security Wrapper
OrchestKit security wrapper for agent-browser. For command reference and usage patterns, use the upstream agent-browser skill directly. This skill adds safety guardrails only.
Command docs: Refer to the upstream
agent-browserskill for the full command reference (50+ commands: interaction, wait, capture, extraction, storage, semantic locators, tabs, debug, mobile, network, cookies, state, vault).
Upstream coverage (do not restate)
These topics belong to the vendor. Read them at the source; do not copy them back into this skill.
| Topic | First-party source |
|---|---|
| CLI command reference, snapshot and ref loop, waits, auth options, eval, config file | agent-browser skill · https://github.com/vercel-labs/agent-browser/blob/main/skills/agent-browser/SKILL.md |
Electron and desktop-app automation over CDP (connect, --cdp, webviews, tabs) |
https://github.com/vercel-labs/agent-browser/blob/main/skill-data/electron/SKILL.md |
| Slack workspace navigation and extraction recipes | https://github.com/vercel-labs/agent-browser/blob/main/skill-data/slack/SKILL.md |
| Running headless in a Vercel Sandbox microVM (deps, snapshots, cron) | vercel:vercel-sandbox skill · https://github.com/vercel-labs/agent-browser/blob/main/skill-data/vercel-sandbox/SKILL.md |
| Exploratory QA sweep with repro evidence (issue taxonomy, report template) | dogfood skill · https://github.com/vercel-labs/agent-browser/blob/main/skill-data/dogfood/SKILL.md |
Named .localhost dev URLs |
ork:portless skill · https://github.com/vercel-labs/portless |
Our delta over all of the above: references/ork-delta.md, covering what nothing checks any more, polite pacing across sessions, and the local-URL policy.
Decision Tree
# Fallback decision tree for web content
# 1. Try WebFetch first (fast, no browser overhead)
# 2. If empty/partial -> Try Tavily extract/crawl
# 3. If SPA or interactive -> use agent-browser
# 4. If login required -> authentication flow + state save
# 5. If dynamic -> wait @element or wait --text
What ships with it
16 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.
- metadata.json 389 B
- references/ork-delta.md 2.8 KB
- references/upstream-dogfood.md 10 KB
- references/upstream-electron.md 6.2 KB
- references/upstream-sandbox.md 9.1 KB
- references/upstream-slack.md 7.5 KB
- references/upstream.md 2.5 KB
- rules/_sections.md 1.3 KB
- rules/_template.md 339 B
- rules/browser-auth-security.md 5.9 KB
- rules/browser-debug-recording.md 5.6 KB
- rules/browser-mobile-testing.md 2.8 KB
- rules/browser-portless-local-dev.md 3.4 KB
- rules/browser-rate-limiting.md 3.9 KB
- rules/browser-scraping-ethics.md 2.8 KB
- test-cases.json 3.6 KB
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 Changed · -6 lines · +4 tokens per session 650e0b86176f
- 14d ago Changed · -1 lines e4dd64b04885
- 22d ago Changed · -5 lines f6362e11c702
- 23d ago Changed · -1 lines ebab3a0be574
- 1mo ago Changed d2ff68d4e4a0
- 1mo ago Changed · +26 lines d080e889a5c3
- 1mo ago First seen · 289 lines · 40 tokens per session scan A 469eb1307b02
browser-tools is a skill published in the GitHub repository yonatangross/orchestkit (298 stars, last pushed today), licensed MIT. It adds 44 tokens to every session and 5,989 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
Other skills, from other repositories
playwright
Use when the task requires capturing or automating a real browser from the terminal.
playwright-cli
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.
qa-screenshot
Screenshot a page (deploy preview or a dev server on localhost) in the sandbox's headless Chromium, look at it, and embed it in a task comment. Use to verify a visual change or record before/after evidence.
browser-qa
Testing web apps through a real browser: reconnaissance before acting, selector discovery, state capture, console errors and screenshot evidence. Use on a web surface end to end, or to reproduce a front-end bug.
web-system-tests
The web realization of the system-tests contract — browser-driven system tests with Playwright against a running frontend. Owns the project layout (tests/), the Playwright configuration (baseURL plus webServer, cross-engine projects), the role- and label-based selector policy, code coverage as an opt-in second run…
demo-recorder
Use when the user wants a scripted screen-recording demo video of a web app, a narration script or text-to-speech voice-over for one, or a dubbed cut.