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Testing Webapps

Testing Webapps is a skill for Claude Code from WarrenZhu050413/Warren-Claude-Code-Plugin-Marketplace. It costs 35 tokens per session (1,768 once invoked), scanned A, original, no licence file.

A Playwright-based toolkit for using and testing local web applications in a browser. Playwright is a tool that automates browsers.

In plain words
What is it for?
Use it to verify frontend features, debug the user interface, take browser screenshots, and view browser logs.
Why use it?
It helps check whether a web interface works, investigate unexpected behavior, and inspect what happens in the browser.

Skill for Claude Code

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

Part of the claude-context-orchestrator plugin — 52 skills, 1 hook shipped together

not rated 7repo 9mo ago A scan 35 tokens no licence

Good fit Use it to verify frontend features, debug the user interface, take browser screenshots, and view browser logs.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/warrenzhu050413/warren-claude-code-plugin-marketplace/testing-webapps
View source ↗ WarrenZhu050413/Warren-Claude-Code-Plugin-Marketplace
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 WarrenZhu050413/Warren-Claude-Code-Plugin-Marketplace --skill testing-webapps
Clone the repo
git clone --depth 1 https://github.com/WarrenZhu050413/Warren-Claude-Code-Plugin-Marketplace

Made for: Claude Code.

Or install claude-context-orchestrator, the plugin that ships this one along with the rest of its 52 skills, 1 hook.

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 Testing Webapps

README.md
[![agentmods](https://agentmods.dev/badge/skills/warrenzhu050413/warren-claude-code-plugin-marketplace/testing-webapps/github.svg)](https://agentmods.dev/skills/warrenzhu050413/warren-claude-code-plugin-marketplace/testing-webapps)
Your own site
<a href="https://agentmods.dev/skills/warrenzhu050413/warren-claude-code-plugin-marketplace/testing-webapps"><img src="https://agentmods.dev/badge/skills/warrenzhu050413/warren-claude-code-plugin-marketplace/testing-webapps/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 Testing Webapps

Your own site · 80×15
<a href="https://agentmods.dev/skills/warrenzhu050413/warren-claude-code-plugin-marketplace/testing-webapps"><img src="https://agentmods.dev/badge/skills/warrenzhu050413/warren-claude-code-plugin-marketplace/testing-webapps.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,768 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00035 $0.01768
Opus 5.5 $0.00014 $0.00707
Sonnet 5.5 $0.00007 $0.00354
Haiku 4.5 $0.00003 $0.00177

Measured 2mo ago against content hash b0b1fadde634, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Testing Webapps 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 2mo ago.

The scan reads SKILL.md. This mod also ships 4 executable files (examples/console_logging.py, examples/element_discovery.py, examples/static_html_automation.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.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

subprocess.run([
claude-context-orchestrator/snippets/local/development/testing-webapps/SKILL.md · 262 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

5 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. 2mo ago First seen · 262 lines · 35 tokens per session scan A b0b1fadde634

Subscribe to this mod's changes

Testing Webapps is a skill published in the GitHub repository WarrenZhu050413/Warren-Claude-Code-Plugin-Marketplace (7 stars, last pushed 9mo ago), with no licence file. It adds 35 tokens to every session and 1,768 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Browser automationE2E testingTesting
Related

Testing Webapps compared with skills from other repositories

Testing Webapps next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
Testing WebappsWarrenZhu050413/Warren-Claude-Code-Plugin-MarketplaceSkill79mo agononeA35Claude Code
browsegarrytan/gstackSkill140kyesterdayMITB32Claude Code
cua-driverdavidondrej/skillsSkill4.3k3d agoMITA68Claude Code, Codex
create-verification-skillget-bb/bbSkill4.9kyesterdayMITA57Claude Code, Codex
browser-qahashgraph-online/awesome-codex-pluginsSkill1.5kyesterdayApache-2.0A58Claude Code, Codex
webapp-testinganthropics/skillsSkill188k9d agononeA35Claude Code
test-electron-appPostHog/posthog-fossSkill728yesterdayMITA112Claude Code