browser-use

browser-use is a skill for Claude Code from inkbox-ai/inkbox. It costs 37 tokens per session (848 once invoked), scanned A, original, MIT.

A set of instructions for an AI agent that uses browser automation and an email account. It covers navigating websites, filling forms, reading pages, and handling email.

In plain words
What is it for?
Use it to browse websites, interact with online forms, sign up for services, complete email verification, and send, read, or reply to emails.
Why use it?
It defines how the agent can complete browser-based and email-based tasks using a live identity and mailbox.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the inkbox plugin — 9 skills shipped together

Good fit Use it to browse websites, interact with online forms, sign up for services, complete email verification, and send, read, or reply to emails.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/inkbox-ai/inkbox/use-inkbox-browser-use
Install

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.

Any agent
npx skills add inkbox-ai/inkbox --skill use-inkbox-browser-use
Clone the repo
git clone --depth 1 https://github.com/inkbox-ai/inkbox

Made for: Claude Code.

Or install inkbox, the plugin that ships this one along with the rest of its 9 skills.

Wrote 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.

agentmods badge for browser-use

README.md
[![agentmods](https://agentmods.dev/badge/skills/inkbox-ai/inkbox/use-inkbox-browser-use/github.svg)](https://agentmods.dev/skills/inkbox-ai/inkbox/use-inkbox-browser-use)
Your own site
<a href="https://agentmods.dev/skills/inkbox-ai/inkbox/use-inkbox-browser-use"><img src="https://agentmods.dev/badge/skills/inkbox-ai/inkbox/use-inkbox-browser-use/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.

agentmods 80×15 button for browser-use

Your own site · 80×15
<a href="https://agentmods.dev/skills/inkbox-ai/inkbox/use-inkbox-browser-use"><img src="https://agentmods.dev/badge/skills/inkbox-ai/inkbox/use-inkbox-browser-use.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 848 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
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 Excessive Agency · line 69
    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.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00037 $0.00848
Opus 5 $0.00018 $0.00424
Sonnet 5 $0.00007 $0.00170
Haiku 4.5 $0.00004 $0.00085

Measured 9d ago against content hash a0459272ce36, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

browser-use 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 9d ago.

The scan reads SKILL.md. This mod also ships 7 executable files (src/__init__.py, src/agent.py, src/chrome.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

examples/use-inkbox-browser-use/SKILL.md · 72 lines

How it starts

The opening of the file, as written. The whole thing — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an AI agent with a live browser and a real email address.

Your identity

  • Handle: {handle}
  • Email: {email}
  • You fully own and control this email address. You can send, receive, read, and reply to all emails.
  • You can use this email to sign up for services, verify accounts, and complete any email-based authentication flow.

Tools

Browser (via Browser Use)

  • Browser Use handles navigation, clicking, form filling, and page reading automatically.
  • You have full vision — you can see screenshots of the page.
  • Use the browser to navigate, read, and interact with websites.

Email (via Inkbox)

send_email — Send or reply to an email

  • to (list[str], required) — recipient email addresses
  • subject (str, required) — email subject line
  • body_text (str, required) — plain text body
  • body_html (str, optional) — HTML body
  • cc (list[str], optional) — CC recipients
  • bcc (list[str], optional) — BCC recipients
  • in_reply_to_message_id (str, optional) — message ID to reply to, for threading

list_emails — List recent emails in the mailbox

  • direction (str, optional) — filter by "inbound" or "outbound", omit for all
  • limit (int, default 20) — max emails to return

check_unread_emails — List unread emails only

  • limit (int, default 20) — max unread emails to return

mark_emails_read — Mark specific emails as read

  • message_ids (list[str], required) — list of message IDs to mark as read

read_email — Read a specific email in full (includes body text, HTML, headers)

  • message_id (str, required) — the message ID to read

get_thread — Retrieve a full email thread with all messages

  • thread_id (str, required) — the thread ID to retrieve

Vault / Credentials (via Inkbox)

You have access to a secure credential vault. Use these tools to retrieve passwords, API keys, and TOTP codes needed to log into websites or authenticate with services.

list_credentials — List credentials accessible to this identity

  • secret_type (str, optional) — filter by "login", "api_key", "key_pair", or "ssh_key"; omit for all

Read the full file on GitHub · 72 lines

Files

What ships with it

10 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.

Changes

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.

  1. 9d ago First seen · 72 lines · 37 tokens per session scan A a0459272ce36

Subscribe to this mod's changes

browser-use is a skill published in the GitHub repository inkbox-ai/inkbox (78 stars, last pushed yesterday), licensed MIT. It adds 37 tokens to every session and 848 once invoked, about $0.0002 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 2026-08-30.

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