Agent skill

Playwright Testing

by chongdashu in chongdashu/vibejam-starter-pack

Plan, implement, and debug frontend tests: unit/integration/E2E/visual/a11y.

No licenceAuto-check passedTesting & QA

Install Playwright Testing

skills CLI
$ npx skills add chongdashu/vibejam-starter-pack --skill playwright-testing -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install chongdashu/vibejam-starter-pack playwright-testing --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/chongdashu/vibejam-starter-pack.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/playwright-testing .claude/skills/playwright-testing && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
playwright-testing
GitHub stars
149
Token cost
~2.2k tokens
SKILL.md length
870 words
Files
5 (incl. scripts, references)
Skills in repo
11
Repo updated
First seen
Licence
None found

At a glance

Plan, implement, and debug frontend tests: unit/integration/E2E/visual/a11y.

  • Works in 4 steps: Test the contract, not the… → Prefer determinism over retries: make… → Observe like a debugger: console errors,… → …
  • Playwright MCP browser automation
  • SKILL.md covers Philosophy: Confidence Per…, Test Layer Decision Tree, Quick Start: First Smoke Test and Concrete MCP Workflow: Testing…, plus 9 more sections
  • Runs Python scripts from its folder; calls python

What it does

Playwright Testing is an agent skill from chongdashu/vibejam-starter-pack. Plan, implement, and debug frontend tests: unit/integration/E2E/visual/a11y. Use for Playwright MCP browser automation, Vitest/Jest/RTL, flaky test triage, CI stabilization, and canvas/WebGL games (Phaser) needing deterministic input plus screenshot/state assertions. Trigger: "test", "E2E", "flaky", "visual regression", "Playwright", "game testing".

Its SKILL.md is about 2.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including scripts and reference files (for example `references/flake-reduction.md`, `references/phaser-canvas-testing.md` and `references/playwright-mcp-cheatsheet.md`).

It sits in Testing & QA, covering Unit testing, Browser testing and Visual regression testing. It works with Playwright, Model Context Protocol, Jest and Vitest. The repository describes itself as: Free Vibe Jam starter pack — battle-tested ThreeJS and Phaser agent skills, starter projects, and prompts.

When your agent uses it

  • Playwright MCP browser automation
  • Vitest/Jest/RTL
  • Flaky test triage
  • CI stabilization

Example prompts

  • “visual regression”
  • “Playwright”
  • “game testing”
  • “/playwright-testing”

Requirements

  • Python 3

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. Test the contract, not the implementation: assert stable user-meaningful outcomes and public seams.
  2. Prefer determinism over retries: make time/RNG/network controllable; remove flake at the source.
  3. Observe like a debugger: console errors, network failures, screenshots, and state dumps on failure.
  4. One critical flow first: a reliable smoke test beats 50 flaky tests.

What it can do on your machine

Read from SKILL.md and the folder at commit 6793771. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 1 file in scripts/ (Python), which the agent can run.

    Shell commands in SKILL.md call:

    • python

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Playwright Testing loads about 2.2k tokens when it runs, and up to ~5.9k if it reads all its reference files. Until then it costs about 93 tokens; SKILL.md has 870 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~93
When it runs · the whole SKILL.md, loaded when a task matches
~2.2k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~5.9k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 870 words (~2,228 tokens).

“Unlock reliable confidence fast: enable safe refactors by choosing the right test layer, making the app observable, and eliminating nondeterminism so failures are actionable.”

— opening of SKILL.md by chongdashu
name
playwright-testing

Read the full SKILL.md on GitHub

Files

SKILL.md and 4 other files (scripts, references) in .claude/skills/playwright-testing of chongdashu/vibejam-starter-pack.

  • SKILL.md
  • references/flake-reduction.md
  • references/phaser-canvas-testing.md
  • references/playwright-mcp-cheatsheet.md
  • scripts/imgdiff.py

Open the folder on GitHubat commit 6793771

Compare with similar skills

Playwright Testing next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Playwright Testing compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Playwright Testing this skillchongdashu/vibejam-starter-pack149—~2.2kAutomated safety check: PassNone
Testingradix-ng/primitives274—~3.3kAutomated safety check: PassMIT
Web Testing with Playwright and Vitestwithkynam/vibecode-pro-max-kit1.1k—~892Automated safety check: PassApache-2.0
React Testingaffaan-m/ECC275k1 repos~3.3kAutomated safety check: PassMIT
Test CommanderEliasOulkadi/shokunin114—~3kAutomated safety check: NotesMIT
Test Migrationpetrkindlmann/qa-skills165—~5.3kAutomated safety check: PassMIT

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Categories

Questions about Playwright Testing

What does Playwright Testing do?

Plan, implement, and debug frontend tests: unit/integration/E2E/visual/a11y. Playwright Testing is an agent skill from chongdashu/vibejam-starter-pack. Plan, implement, and debug frontend tests: unit/integration/E2E/visual/a11y.

When should I use Playwright Testing?

Playwright Testing fits situations like: playwright MCP browser automation; vitest/Jest/RTL; flaky test triage; CI stabilization.

How do I install Playwright Testing in Claude Code?

Run `npx skills add chongdashu/vibejam-starter-pack --skill playwright-testing -a claude-code`. Or copy the skill folder (.claude/skills/playwright-testing in chongdashu/vibejam-starter-pack) into .claude/skills/playwright-testing in your project. Claude Code loads it when a task matches its description.

How do I install Playwright Testing in Codex?

Run `npx skills add chongdashu/vibejam-starter-pack --skill playwright-testing -a codex`. Or copy the skill folder (.claude/skills/playwright-testing in chongdashu/vibejam-starter-pack) into .agents/skills/playwright-testing in your project. Codex loads it when a task matches its description.

Can I use Playwright Testing in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add chongdashu/vibejam-starter-pack --skill playwright-testing -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/playwright-testing, .gemini/skills/playwright-testing, .github/skills/playwright-testing and .opencode/skills/playwright-testing in your project.

What does Playwright Testing need to run?

Going by SKILL.md and its folder, Playwright Testing needs Python for the scripts in its folder and the command-line tools its instructions call (python). Our summary lists: Python 3.

Does Playwright Testing access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Playwright Testing safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Playwright Testing use?

No licence was found for Playwright Testing or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Playwright Testing use?

About 2.2k tokens (SKILL.md is roughly 8.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 3.6k tokens, read only when the agent opens those files.

What are the alternatives to Playwright Testing?

Skills that share tags, products or a category with Playwright Testing: Testing (radix-ng/primitives, 274 stars), Web Testing with Playwright and Vitest (withkynam/vibecode-pro-max-kit, 1.1k stars), React Testing (affaan-m/ECC, 275k stars) and Test Commander (EliasOulkadi/shokunin, 114 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Playwright Testing?

chongdashu (a GitHub user) maintains it in chongdashu/vibejam-starter-pack, which has 149 GitHub stars. The repository holds 11 skills in this directory. The repository was last updated on April 15, 2026.

Source: chongdashu/vibejam-starter-pack on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.