agent-browser

agent-browser is a skill for Claude Code, Codex from code-yeongyu/oh-my-openagent. It costs 51 tokens per session (4,213 once invoked), scanned A, original, no licence file.

A browser automation guide for testing websites, completing forms, taking screenshots, and collecting information from web pages.

In plain words
What is it for?
Use it to navigate sites, interact with pages, fill in forms, capture screenshots, test web applications, or extract page data.
Why use it?
It removes the need to perform repetitive browser actions by hand during testing or data collection.

Skill for Claude CodeCodex

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/code-yeongyu/oh-my-openagent/agent-browser
Any agent
npx skills add code-yeongyu/oh-my-openagent --skill agent-browser
Clone the repo
git clone --depth 1 https://github.com/code-yeongyu/oh-my-openagent

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.

agentmods badge for agent-browser

README.md
[![agentmods](https://agentmods.dev/badge/skills/code-yeongyu/oh-my-openagent/agent-browser.svg)](https://agentmods.dev/skills/code-yeongyu/oh-my-openagent/agent-browser)
Your own site
<a href="https://agentmods.dev/skills/code-yeongyu/oh-my-openagent/agent-browser"><img src="https://agentmods.dev/badge/skills/code-yeongyu/oh-my-openagent/agent-browser.svg" alt="Measured on agentmods" height="20"></a>
Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,213 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00051 $0.04213
Opus 5 $0.00026 $0.02107
Sonnet 5 $0.00010 $0.00843
Haiku 4.5 $0.00005 $0.00421

Measured 2d ago against content hash 725b4f24f62b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

agent-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 2d 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.

packages/skills-loader-core/src/features/builtin-skills/agent-browser/SKILL.md · 452 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 2d ago Changed · +1 lines 725b4f24f62b
  2. 5d ago First seen · 451 lines · 51 tokens per session scan A f021f1a79e48

Subscribe to this mod's changes

agent-browser is a skill published in the GitHub repository code-yeongyu/oh-my-openagent (68,657 stars, last pushed yesterday), with no licence file. It adds 51 tokens to every session and 4,213 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 2026-08-30.

Related

Other skills, from other repositories

browser-testing-with-devtools

Tests in real browsers via Chrome DevTools MCP. Use when building or debugging anything that runs in a browser. Use when you need to inspect the DOM, capture console errors, analyze network requests, profile performance, or verify visual output with real runtime data. Requires the chrome-devtools MCP server to be…

addyosmani/agent-skills · 68 tokens

qa/e2e-playwright

Playwright E2E 测试完整方法论,涵盖项目初始化、Page Object Model、认证复用、API Mock、视觉回归、多浏览器测试、CI 集成和调试技巧.

echoVic/boss-skill · 50 tokens

Console Error Hunter

Systematically detect, capture, and categorize browser console errors, warnings, and unhandled exceptions during automated test execution.

PramodDutta/qaskills · 26 tokens

playwright-e2e

Comprehensive end-to-end testing skill using Playwright for web applications, covering page objects, selectors, assertions, waits, fixtures, and test organization.

PramodDutta/qaskills · 36 tokens

e2e-testing-claude-code

Make Claude Code write and maintain end-to-end tests like a senior SDET — Playwright and Cypress flows with stable locators, the Page Object Model, fixtures, reused auth state, network mocking, and flake-free CI. Claude Code E2E testing, done right.

PramodDutta/qaskills · 65 tokens

Browser Agent QA Testing

Teach agents to use AI browser agents for exploratory and smoke QA with step budgets, evidence-based assertions, guardrails, and Playwright conversion.

PramodDutta/qaskills · 33 tokens