uvs-qa

uvs-qa is a skill for Claude Code from utsavanand/uv-suite. It costs 71 tokens per session (3,055 once invoked), scanned A, original, MIT.

A browser-based quality-checking skill that uses Playwright, a tool for controlling web browsers, to exercise a running application. It records console errors and visual evidence, and can create regression tests.

In plain words
What is it for?
It is for quick, standard, or exhaustive checks of a local web app, with optional source fixes and test generation.
Why use it?
It helps find broken interactions, browser errors, and visual problems before release, while keeping evidence from the checks.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter; mentions CLAUDE.md.

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.

agentmods
npx agentmods add skills/utsavanand/uv-suite/uvs-qa
Any agent
npx skills add utsavanand/uv-suite --skill uvs-qa
Clone the repo
git clone --depth 1 https://github.com/utsavanand/uv-suite

Made for: Claude Code.

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 uvs-qa

README.md
[![agentmods](https://agentmods.dev/badge/skills/utsavanand/uv-suite/uvs-qa.svg)](https://agentmods.dev/skills/utsavanand/uv-suite/uvs-qa)
Your own site
<a href="https://agentmods.dev/skills/utsavanand/uv-suite/uvs-qa"><img src="https://agentmods.dev/badge/skills/utsavanand/uv-suite/uvs-qa.svg" alt="Measured on agentmods" height="20"></a>
Per session 71 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,055 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00071 $0.03055
Opus 5 $0.00036 $0.01528
Sonnet 5 $0.00014 $0.00611
Haiku 4.5 $0.00007 $0.00305

Measured 5d ago against content hash 0085da5390fc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

uvs-qa scanned grade A with 1 finding 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 5d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- Bash(curl -sf *)
skills/uvs-qa/SKILL.md · 275 lines

How it starts

The opening of the file, as written. The whole thing — 275 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Target

$ARGUMENTS

Parse $ARGUMENTS:

  • First positional token without -- prefix → app URL (defaults to http://localhost:3000 if not given).
  • --tier quick|standard|exhaustive → tier (defaults to standard).
  • --baseline <path> → path to a prior qa-state.md for health-score delta (defaults to uv-out/qa-state.md, the flat pointer to the latest run, if present).

Session output directory

Write QA artifacts under this directory (scoped to the current session). The <session-output-dir>/qa/<ts>/ paths below all resolve under it:

!"${CLAUDE_PROJECT_DIR:-.}"/.claude/hooks/uv-out-session.sh

Stable flat pointer maintained for /uvs-commit and /ship:

!"${CLAUDE_PROJECT_DIR:-.}"/.claude/hooks/uv-out-pointer.sh qa-state.md qa/state.md

Project context

!cat CLAUDE.md 2>/dev/null || echo "No CLAUDE.md found"

Detected test framework

!(test -f playwright.config.ts && echo "playwright") || (test -f playwright.config.js && echo "playwright") || (test -f vitest.config.ts && echo "vitest") || (test -f jest.config.js && echo "jest") || (grep -l '"jest"' package.json 2>/dev/null && echo "jest") || echo "none-detected"

Tier definitions

Tier Viewports Pages Console capture Fix bugs Generate regression tests
quick 1 (desktop 1440×900) Top-level entry + 1 deep link Yes No (report only) No
standard 2 (desktop 1440×900, mobile 390×844) Entry + every link in nav + 2 deep flows Yes Only critical severity When framework detected
exhaustive 3 (desktop, tablet 1024×768, mobile) Every reachable page from nav + 3 deep flows + edge-case inputs Yes All critical + high Yes when framework detected

If $ARGUMENTS doesn't specify a tier, default to standard.

Orchestration procedure

Execute these steps in order.

Step 1 — Setup

  • Confirm Playwright MCP is reachable (mcp__playwright__browser_* tools available). If not, stop and tell user to enable the Playwright MCP server.
  • Verify the target URL is reachable: curl -sf <url> > /dev/null. If not, stop and ask user to start the dev server.
  • Create output directory: mkdir -p <session-output-dir>/qa/<ISO-timestamp>/screenshots (the <session-output-dir> printed above).
  • If framework detected, note its config path; you'll write regression tests against it later.

Read the full file on GitHub · 275 lines

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. 5d ago First seen · 275 lines · 71 tokens per session scan A 0085da5390fc

Subscribe to this mod's changes

uvs-qa is a skill published in the GitHub repository utsavanand/uv-suite (2 stars, last pushed 2mo ago), licensed MIT. It adds 71 tokens to every session and 3,055 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.