Instructions for operating approved business websites through visible Chrome or Edge sessions. It covers finding controls, entering information, using saved credentials, and uploading authorized files.

Opening approved web apps, navigating pages, filling forms, selecting options, logging in with saved credentials, and uploading user-approved files.

They provide a controlled process for browser actions and require checking that important actions succeeded.

browser-use — Skill for Claude Code and Codex by joinwell52-AI: Instructions for operating approved business websites through visible Chrome

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.

agentmods

npx agentmods add skills/joinwell52-ai/codeflowmu-open/browser-use

Any agent

npx skills add joinwell52-AI/CodeFlowMu-open --skill browser-use

Clone the repo

git clone --depth 1 https://github.com/joinwell52-AI/CodeFlowMu-open

Made for: Claude Code, Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/joinwell52-ai/codeflowmu-open/browser-use.svg)](https://agentmods.dev/skills/joinwell52-ai/codeflowmu-open/browser-use)

Your own site

<a href="https://agentmods.dev/skills/joinwell52-ai/codeflowmu-open/browser-use"><img src="https://agentmods.dev/badge/skills/joinwell52-ai/codeflowmu-open/browser-use.svg" alt="Measured on agentmods" height="20"></a>

Per session 93 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 781 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

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.

Model	Per session	Once invoked
Fable 5	$0.00093	$0.00781
Opus 5	$0.00046	$0.00391
Sonnet 5	$0.00019	$0.00156
Haiku 4.5	$0.00009	$0.00078

Measured 4d ago against content hash 06c5fae09f0f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 4d 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.

skills/browser-use/SKILL.md · 50 lines

How it starts

The opening of the file, as written. The whole thing — 50 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Browser Use

Operate approved Web applications through visible, headful Chrome or Edge sessions. Behave like a bounded digital employee, not a crawler.

Workflow

Call browser.list_targets and follow the configured browser and structured loginProfile semantics.
Call browser.open_target; reuse the returned tab when possible.
Call browser.snapshot or browser.find to obtain an exact selector. Never guess or persist brittle coordinates, CSS paths, or XPath.
Use browser.click, browser.fill, or browser.select for visible controls. Use browser.fill_credentials for saved passwords; never request or echo the stored password.
Use browser.upload only for files the user explicitly authorized. It attaches files through the page input without operating a Windows dialog.
Verify each meaningful action with a fresh snapshot, a visible selector, the URL, or a success state.
Call browser.cancel when the user asks to pause. Claim pause only after browser.status confirms it. Resume only on explicit instruction.

For a new or changed login page, call browser.record_login_start, let the user complete one normal login, then call browser.record_login_finish. The generated semantic profile is a draft for user review; password and verification-code values are never recorded.

For a recorded login, call browser.login with target_id; tab_id is optional and the tool atomically opens/reuses/reconnects the correct tab, fills credentials, and selects the recorded company/tenant. Reuse the returned tab_id for browser.submit_login. Do not call open_target again between verification and submission. Report success only when browser.verify_login returns authenticated: true.

Routing

Web DOM, forms, login, upload, and page navigation: Browser Use.
Native EXE windows and Windows UI Automation: Windows Use.
A combined workflow may use both. Switch only when the active interaction surface changes.

Digital-employee boundaries

Read the full file on GitHub · 50 lines

Files

What ships with it

1 file 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.

agents/openai.yaml 218 B

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.

4d ago First seen · 50 lines · 93 tokens per session scan A 06c5fae09f0f

Subscribe to this mod's changes

browser-use is a skill published in the GitHub repository joinwell52-AI/CodeFlowMu-open (2 stars, last pushed 10d ago), licensed MIT. It adds 93 tokens to every session and 781 once invoked, about $0.0005 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.

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