How do I install the Tester skill?

Run npx skillmds@latest add erikfiala/tester in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Tester safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Tester?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Tester free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Tester?

erikfiala (@erikfiala) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Tester by erikfiala — Agent Skill

Name: Tester
Author: erikfiala

Tester

Run end-to-end web quality audits with Playwright and Lighthouse using existing project scripts first. Use when the user says /tester, e2e test, smoke test, Playwright audit, Lighthouse audit, performance audit, accessibility audit, dark mode audit, mobile audit, or asks for 100/100 Lighthouse improvement guidance.

erikfiala c50927f 2 files · 11.0 KB Updated Sep 17, 2026

File contents

E2E Playwright + Lighthouse Tester

Use this skill to run reproducible e2e and Lighthouse checks across a target web repo, with discovery-first command selection and clear reporting.

Workflow

Discover first
- Run:
  - python3 .cursor/skills/tester/scripts/discover_audit_targets.py .
  - Optional JSON output: python3 .cursor/skills/tester/scripts/discover_audit_targets.py . --json
- Read discovered package scripts, runner files, and PWA signals before deciding what to run.
Runner selection priority
- Prefer existing npm / pnpm / yarn scripts that already run Playwright and Lighthouse.
- Otherwise use checked-in runner files in common locations (perf/, scripts/, e2e/, tests/).
- Only use ad-hoc npx playwright / npx lighthouse commands if no native runner exists.
Execution matrix
- For Lighthouse, target all slices when technically possible:
  - light-desktop
  - light-mobile
  - dark-desktop
  - dark-mobile
- Attempt categories:
  - performance
  - accessibility
  - best-practices
  - seo
  - pwa (when supported by installed Lighthouse and app signals)
- Prefer preview or production-like mode instead of noisy local dev mode when the repo supports it.
100/100 objective
- Always optimize toward 100/100 in Lighthouse categories and Web Vitals-related audits.
- Do not claim false success; explicitly list blockers and remaining deltas to 100.

Reporting contract

Always report by package/surface:

Commands run, including whether native or adapted.
Playwright findings: failing flows, flaky clues, console/page errors, failed requests, auth blockers.
Lighthouse findings per matrix slice (light-desktop, light-mobile, dark-desktop, dark-mobile).
A dedicated 100/100 gap analysis section with highest impact opportunities.
Explicit coverage gaps (skipped routes, no dark mode, no mobile emulation, missing credentials, unsupported PWA category).

Guardrails

Keep commands non-interactive whenever possible.
Never silently skip a matrix slice; report why it was skipped.
If the repository is not a web app, stop quickly and state that no web target was detected.

---name: testerdescription: Run end-to-end web quality audits with Playwright and Lighthouse using existing project scripts first. Use when the user says /tester, e2e test, smoke test, Playwright audit, Lighthouse audit, performance audit, accessibility audit, dark mode audit, mobile audit, or asks for 100/100 Lighthouse improvement guidance.---# E2E Playwright + Lighthouse TesterUse this skill to run reproducible e2e and Lighthouse checks across a target web repo, with discovery-first command selection and clear reporting.## Workflow1. **Discover first** - Run: - `python3 .cursor/skills/tester/scripts/discover_audit_targets.py .` - Optional JSON output: `python3 .cursor/skills/tester/scripts/discover_audit_targets.py . --json` - Read discovered package scripts, runner files, and PWA signals before deciding what to run.2. **Runner selection priority** - Prefer existing `npm` / `pnpm` / `yarn` scripts that already run Playwright and Lighthouse. - Otherwise use checked-in runner files in common locations (`perf/`, `scripts/`, `e2e/`, `tests/`). - Only use ad-hoc `npx playwright` / `npx lighthouse` commands if no native runner exists.3. **Execution matrix** - For Lighthouse, target all slices when technically possible: - `light-desktop` - `light-mobile` - `dark-desktop` - `dark-mobile` - Attempt categories: - `performance` - `accessibility` - `best-practices` - `seo` - `pwa` (when supported by installed Lighthouse and app signals) - Prefer preview or production-like mode instead of noisy local dev mode when the repo supports it.4. **100/100 objective** - Always optimize toward 100/100 in Lighthouse categories and Web Vitals-related audits. - Do not claim false success; explicitly list blockers and remaining deltas to 100.## Reporting contractAlways report by package/surface:- Commands run, including whether native or adapted.- Playwright findings: failing flows, flaky clues, console/page errors, failed requests, auth blockers.- Lighthouse findings per matrix slice (`light-desktop`, `light-mobile`, `dark-desktop`, `dark-mobile`).- A dedicated **100/100 gap analysis** section with highest impact opportunities.- Explicit coverage gaps (skipped routes, no dark mode, no mobile emulation, missing credentials, unsupported PWA category).## Guardrails- Keep commands non-interactive whenever possible.- Never silently skip a matrix slice; report why it was skipped.- If the repository is not a web app, stop quickly and state that no web target was detected.

Frequently asked questions