What is e2e-panther-playwright?

A Symfony testing guide for browser-based end-to-end tests using Panther or Playwright. End-to-end tests check complete user flows through the application, often in a real browser.

It helps write failing tests, implement the smallest fix, and then refactor safely. It covers browser automation, regression tests, and more complex Playwright scenarios.

It turns bug reports and desired behavior into repeatable tests and helps catch failures at boundaries such as invalid, unauthorized, or missing requests.

e2e-panther-playwright — Skill for Claude Code by dev-toolings

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 dev-toolings/superpowers-symfony --skill e2e-panther-playwright

Clone the repo

git clone --depth 1 https://github.com/dev-toolings/superpowers-symfony

Made for: Claude Code.

Or install superpowers-symfony, the plugin that ships this one along with the rest of its 44 skills, 13 commands, 7 agents, 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/dev-toolings/superpowers-symfony/e2e-panther-playwright/github.svg)](https://agentmods.dev/skills/dev-toolings/superpowers-symfony/e2e-panther-playwright)

Your own site

<a href="https://agentmods.dev/skills/dev-toolings/superpowers-symfony/e2e-panther-playwright"><img src="https://agentmods.dev/badge/skills/dev-toolings/superpowers-symfony/e2e-panther-playwright/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/dev-toolings/superpowers-symfony/e2e-panther-playwright"><img src="https://agentmods.dev/badge/skills/dev-toolings/superpowers-symfony/e2e-panther-playwright.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 547 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 pass 7 Sept 2026

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	$0.00029	$0.00547
Opus 5.5	$0.00012	$0.00219
Sonnet 5.5	$0.00006	$0.00109
Haiku 4.5	$0.00003	$0.00055

Measured 18d ago against content hash b5f36e8317a3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

e2e-panther-playwright 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 18d 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.

content/skills/e2e-panther-playwright/SKILL.md · 46 lines

What it actually says

E2e Panther Playwright (Symfony)

Use when

A flow needs a real browser: JavaScript, multi-page journeys such as login, checkout or signup.
WebTestCase cannot see the behavior because it depends on client-side rendering.
Cross-browser needs (WebKit, tracing, video) that WebDriver does not cover: run Playwright separately.
Debugging a browser test that fails only in CI.

Default workflow

Pick the client: static::createPantherClient() for a real browser, static::createClient() when no JavaScript is needed.
Install symfony/panther and dbrekelmans/bdi, run vendor/bin/bdi detect drivers, and register ServerExtension in phpunit.dist.xml.
Extend PantherTestCase and drive the flow with explicit waits: waitFor(), waitForVisibility(), waitForElementToContain().
Assert future state with assertSelectorWillExist() or assertSelectorWillContain(), current state with assertSelectorIsVisible().
Keep the suite in tests/E2E and reset the database between tests (DAMADoctrineTestBundle or Foundry).
Debug with PANTHER_NO_HEADLESS=1 and --debug; set PANTHER_NO_SANDBOX=1 in CI.

Guardrails

Never rely on implicit timing: every async step gets a waitFor* or an assertSelectorWill*.
Target data-testid attributes, not styling classes.
Delete the PNGs written by takeScreenshot() or PANTHER_ERROR_SCREENSHOT_DIR; never commit them.
E2E is slow: cover critical paths only and keep it apart from unit tests.

Progressive disclosure

Use this file for execution posture and risk controls.
Open references when deep implementation details are needed.

Output contract

E2E test files, with the client type and the wait strategy used.
Driver setup, ServerExtension registration and the PANTHER_* variables needed locally and in CI.
Confirmation that screenshots were cleaned up.

References

reference.md

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.

reference.md 9.4 KB

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.

18d ago Changed · +4 lines b5f36e8317a3
1mo ago Changed · +2 lines · -2 tokens per session 795602e404cd
1mo ago First seen · 40 lines · 31 tokens per session scan A f3f968deea16

Subscribe to this mod's changes

e2e-panther-playwright is a skill published in the GitHub repository dev-toolings/superpowers-symfony (226 stars, last pushed 19d ago), licensed MIT. It adds 29 tokens to every session and 547 once invoked, about $0.0001 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.

Browser automation Claude Code E2E testing Testing ai-agents anthropic api-platform claude-code-plugin cqrs

proof-e2e

Build E2E test specs for critical user journeys — Playwright or Cypress, page objects, setup/teardown, CI config. Use when asked to "write E2E tests", "end-to-end testing", "browser tests", "UI tests", or "Playwright tests".

tonone-ai/tonone · 63 tokens

playwright-qa

Driver P of orc:browser-qa — browser QA with Playwright Test and the stock planner/generator/healer agents against a resolved QA target; yields a stitched step-tagged video, traces, and qa-manifest.json.

HigorAlves/orc · 51 tokens

browser-qa

The canonical browser-QA protocol for web changes — target resolution, env attach, the driver gate (Playwright primary, agent-browser, Claude-in-Chrome), validator dispatch, chrome evidence packet.

HigorAlves/orc · 42 tokens

qa-targets

Resolve WHERE browser QA runs — named targets in .orc/targets.json (local, staging, preview), the Target gate, credential references (literal | op:// | env:), guard rule.