What is playwright-testing?

Guidance for writing browser-based end-to-end tests with Playwright, a tool that controls a real browser. It recommends organizing tests around page objects, accessible selectors, fixtures, and reliable waits.

Use it to add or maintain tests for the Electron application, workspace providers, resources, MCP servers, and related user flows.

It helps tests remain readable and less fragile when pages load asynchronously or depend on setup and cleanup.

How openkaiden/kaiden configures Claude Code and Codex

Reuse

Borrowing it

Nothing to install: this file belongs to openkaiden/kaiden. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/openkaiden/kaiden/main/.agents/skills/playwright-testing/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/openkaiden/kaiden

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/openkaiden/kaiden/playwright-testing/github.svg)](https://agentmods.dev/skills/openkaiden/kaiden/playwright-testing)

Your own site

<a href="https://agentmods.dev/skills/openkaiden/kaiden/playwright-testing"><img src="https://agentmods.dev/badge/skills/openkaiden/kaiden/playwright-testing/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/openkaiden/kaiden/playwright-testing"><img src="https://agentmods.dev/badge/skills/openkaiden/kaiden/playwright-testing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,790 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: 9 findings, 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 Prompt Injection · line 217
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
medium Prompt Injection · line 219
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
medium Prompt Injection · line 220
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
medium Prompt Injection · line 221
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
medium Prompt Injection · line 223
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
medium Prompt Injection · line 225
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
medium MCP Rug Pull · line 237
npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.

Fix: Pin the version: npx @scope/[email protected]
medium MCP Rug Pull · line 240
npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.

Fix: Pin the version: npx @scope/[email protected]
medium MCP Rug Pull · line 243
npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.

Fix: Pin the version: npx @scope/[email protected]

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.

Model	Per session	Once invoked
Fable 5.1	$0.00042	$0.02790
Opus 5.5	$0.00017	$0.01116
Sonnet 5.5	$0.00008	$0.00558
Haiku 4.5	$0.00004	$0.00279

Measured 2mo ago against content hash 0c9dda330af3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

playwright-testing 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 2mo 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.

.agents/skills/playwright-testing/SKILL.md · 286 lines

How it starts

The opening of the file, as written. The whole thing — 286 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Playwright Test Automation Guide for Kaiden

Core Principles

Page Object Model (POM): Every page/component gets its own class. Tests never touch raw locators directly.
Resilient locators: Use accessible selectors — getByRole, getByLabel, getByText — before falling back to getByTestId or CSS.
Explicit waits: Use expect with auto-retry or expect.poll() for async operations. Never use arbitrary setTimeout delays.
Serial execution: Use test.describe.serial() for interdependent tests (e.g., create → verify → delete flows).
Fixture-based setup/teardown: Resources, MCP servers, and Goose are managed via Playwright fixtures with automatic cleanup.
Clear failures: Every assertion should produce a readable error. Use descriptive test IDs ([FEATURE-NUM]).

Project Structure

tests/playwright/
├── playwright.config.ts              # Test projects, timeouts, reporters
├── package.json
├── tsconfig.json
├── src/
│   ├── fixtures/
│   │   ├── electron-app.ts           # Core Electron app + page object fixtures
│   │   └── provider-fixtures.ts      # Provider resource/MCP/Goose setup (worker-scoped)
│   ├── model/
│   │   ├── core/
│   │   │   └── types.ts              # Enums, constants, interfaces, TIMEOUTS
│   │   ├── navigation/
│   │   │   └── navigation.ts         # NavigationBar — navigates to all major pages
│   │   └── pages/
│   │       ├── base-page.ts          # Abstract base: waitForLoad(), openTab()
│   │       ├── base-table-page.ts    # Table operations: row lookup, polling, counting
│   │       ├── chat-page.ts          # Chat UI interactions (40+ methods)
│   │       ├── flows-page.ts         # Flow management with table operations
│   │       ├── flows-create-page.ts  # Flow creation workflow
│   │       ├── flows-details-page.ts # Flow details view
│   │       ├── settings-page.ts      # Main settings hub
│   │       ├── mcp-page.ts           # MCP server management
│   │       ├── extensions-page.ts    # Extension browsing
│   │       ├── agent-workspaces-page.ts      # Workspace list + lifecycle entry
│   │       ├── agent-workspace-create-page.ts # Create wizard (FS + network steps)
│   │       ├── agent-workspace-details-page.ts # Workspace details shell
│   │       ├── agent-workspace-overview-page.ts # Overview tab
│   │       ├── agent-workspace-terminal-page.ts
│   │       └── *-tab-page.ts         # Sub-page/tab objects
│   ├── specs/
│   │   ├── dashboard.spec.ts         # App startup and navigation
│   │   ├── extensions-smoke.spec.ts  # Extension management
│   │   ├── settings-smoke.spec.ts    # Settings pages
│   │   ├── workspaces-smoke.spec.ts  # Workspace wizard UI (Kaiden-App-Core, @smoke)
│   │   └── provider-specs/           # Provider-specific tests
│   │       ├── chat-smoke.spec.ts    # Chat functionality (gold standard)
│   │       ├── mcp-smoke.spec.ts     # MCP servers
│   │       └── workspaces/           # Coding Agent Workspace lifecycle (Workspace-Provider)
│   └── utils/
│       ├── app-ready.ts              # waitForAppReady(), waitForNavigationReady(), handleDialogIfPresent()
│       └── test-artifacts.ts         # Trace, screenshot, video capture on failure
└── output/                           # Generated reports and artifacts

Read the full file on GitHub · 286 lines

Files

What ships with it

3 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.

2mo ago First seen · 286 lines · 42 tokens per session scan A 0c9dda330af3

Subscribe to this mod's changes

playwright-testing is a skill published in the GitHub repository openkaiden/kaiden (117 stars, last pushed yesterday), licensed Apache-2.0. It adds 42 tokens to every session and 2,790 once invoked, about $0.0002 per session on Opus 5.5. 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.

E2E testing Testing

playwright-testing next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
playwright-testingopenkaiden/kaiden	Skill	117	yesterday	Apache-2.0	A	42	Claude Code, Codex
verify-omnigentomnigent-ai/omnigent	Skill	11k	today	Apache-2.0	A	100	Claude Code, Codex
test-masterJeffallan/claude-skills	Skill	12k	7d ago	MIT	A	104	Claude Code
eval-dataset-designbojieli/ai-agent-book	Skill	57k	29d ago	Apache-2.0	A	138	Claude Code, Codex
dogfoodcallstack/agent-device	Skill	5.3k	yesterday	MIT	A	55	Claude Code
cua-driverdavidondrej/skills	Skill	4.3k	3d ago	MIT	A	68	Claude Code, Codex
test-warp-uiwarpdotdev/warp	Skill	66k	today	AGPL-3.0	A	55	Claude Code

kaiden: Skill for Claude Code