universo-platformo-react: Skill for Claude Code

.agents/skills/playwright-best-practices/SKILL.md

playwright-best-practices is a skill for Claude Code, Codex from teknokomo/universo-platformo-react. It costs 214 tokens per session (5,307 once invoked), scanned A, original, no licence file.

A guide for writing and maintaining Playwright tests, which automate real browser interactions. It covers test structure, flaky failures, CI/CD, authentication, accessibility, and other browser-testing cases.

In plain words
What is it for?
Creating end-to-end tests, fixing flaky tests, debugging failures, mocking APIs, testing accessibility, and configuring tests for CI/CD.
Why use it?
It helps prevent unreliable browser tests and makes common testing problems easier to diagnose.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

This is teknokomo/universo-platformo-react's own configuration. It tells Claude Code and Codex how to work on universo-platformo-react itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything universo-platformo-react configures →

Reuse

Borrowing it

Nothing to install: this file belongs to teknokomo/universo-platformo-react. 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/teknokomo/universo-platformo-react/main/.agents/skills/playwright-best-practices/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/teknokomo/universo-platformo-react

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 playwright-best-practices

README.md
[![agentmods](https://agentmods.dev/badge/skills/teknokomo/universo-platformo-react/playwright-best-practices/github.svg)](https://agentmods.dev/skills/teknokomo/universo-platformo-react/playwright-best-practices)
Your own site
<a href="https://agentmods.dev/skills/teknokomo/universo-platformo-react/playwright-best-practices"><img src="https://agentmods.dev/badge/skills/teknokomo/universo-platformo-react/playwright-best-practices/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 playwright-best-practices

Your own site · 80×15
<a href="https://agentmods.dev/skills/teknokomo/universo-platformo-react/playwright-best-practices"><img src="https://agentmods.dev/badge/skills/teknokomo/universo-platformo-react/playwright-best-practices.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 214 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,307 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.
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 $0.00214 $0.05307
Opus 5 $0.00107 $0.02653
Sonnet 5 $0.00043 $0.01061
Haiku 4.5 $0.00021 $0.00531

Measured 9d ago against content hash d11928df3747, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

playwright-best-practices 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 9d 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-best-practices/SKILL.md · 320 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

Files

What ships with it

60 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. 9d ago First seen · 320 lines · 214 tokens per session scan A d11928df3747

Subscribe to this mod's changes

playwright-best-practices is a skill published in the GitHub repository teknokomo/universo-platformo-react (22 stars, last pushed today), with no licence file. It adds 214 tokens to every session and 5,307 once invoked, about $0.0011 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 2026-09-01.

Related

Other skills, from other repositories

dogfood

Systematically explore and test a mobile app on iOS/Android with agent-device to find bugs, UX issues, and other problems. Use when asked to dogfood, QA, exploratory test, find issues, bug hunt, or test this app on mobile.

callstack/agent-device · 55 tokens

test-warp-ui

Guides testing Warp UI features and changes using the computer use tool. Use this skill only when computer-use testing was requested (explicit request or accepted offer) and the computeruse tool is available to the agent. Covers launching Warp and verifying UI behavior.

warpdotdev/warp · 55 tokens

test-electron-app

Drive the real running PostHog Electron app (live tRPC, workspace-server, real data) over CDP with agent-browser. Connect to the running app on port 9222, test desktop changes against a local Django stack, snapshot the accessibility tree, inspect network requests, and screenshot only when explicitly asked. Use when…

PostHog/posthog-foss · 112 tokens

pyats-dynamic-test

Generate and execute deterministic pyATS aetest validation scripts - interface state, OSPF neighbors, BGP paths, ping matrices, and custom compliance tests. Use when writing a network test, validating post-change state, running pass/fail checks, or building automated regression tests.

automateyournetwork/netclaw · 61 tokens

test-loop

Plan, generate, and heal an executable E2E test suite from approved acceptance criteria (web and mobile).

HoangNguyen0403/agent-skills-standard · 25 tokens

playwright-cli

Automates browser interactions for testing and validating your own web applications using playwright-cli. Use when you need terminal-first browser control for navigation, form filling, screenshots, tracing, bound browser sessions, debugging, or generating Playwright test code. Only use against applications you own or…

testdino-hq/playwright-skill · 64 tokens