verify-feature

A browser-based verification tool for frontend changes that finds affected routes, opens them with Playwright, and records screenshots while checking for errors.

In plain words
What is it for?
It is for verifying changed routes, testing mobile layouts, checking console and network errors, and confirming that a create or add dialog opens correctly.
Why use it?
It helps catch broken pages, failed requests, and visual problems after a feature is implemented.

Skill for Claude CodeCodex

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/makigjuro/cloudstack-ai-plugins/verify-feature
Any agent
npx skills add makigjuro/cloudstack-ai-plugins --skill verify-feature
Clone the repo
git clone --depth 1 https://github.com/makigjuro/cloudstack-ai-plugins

Made for: Claude Code, Codex.

Per session 65 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,423 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 $0.00065 $0.01423
Opus 5 $0.00032 $0.00711
Sonnet 5 $0.00013 $0.00285
Haiku 4.5 $0.00006 $0.00142

Measured 2d ago against content hash 321201b57265, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

verify-feature 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 2d 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.

curl -sf http://localhost:{DEV_PORT} > /dev/null 2>&1 && echo "Frontend: UP" || echo "Frontend: DOWN"
plugins/react-developer/skills/verify-feature/SKILL.md · 144 lines

How it starts

The opening of the file, as written. The whole thing — 144 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Verify Feature

Post-implementation browser verification for frontend features. Auto-detects changed routes from git history, navigates them, takes screenshots, and checks for console/network errors.

Arguments

  • {route} — Route to verify (e.g., /users, /settings). If omitted, auto-detects from git changes.
  • --responsive — Also capture mobile viewport screenshots (375x667)
  • --interactive — Click the first Create/Add button, verify dialog appears, then dismiss

Configuration

Read cloudstack.json from the project root at the start of execution. Extract:

  • FRONTEND_PATH = frontend.path (default: web)
  • DEV_PORT = frontend.devPort (default: 5173)
  • UI_LIBRARY = frontend.uiLibrary (default: shadcn)
  • STATE_SERVER = frontend.stateManagement.server (default: tanstack-query)
  • STATE_CLIENT = frontend.stateManagement.client (default: zustand)
  • MULTI_TENANT = backend.multiTenancy (default: false)

If cloudstack.json does not exist, auto-detect by checking package.json dependencies.

Auth Configuration

Check cloudstack.json for localDev.authConfig. If present, use it for localStorage injection. Otherwise, detect the auth store pattern from the codebase (see screenshot skill for details).

Process

Step 1: Detect Routes

If a route was provided, use it directly. Otherwise, auto-detect from recent changes:

# Find changed page files
git diff --name-only HEAD~3 | grep "{FRONTEND_PATH}/src/.*pages/"

Map changed page files to routes by finding the router configuration file:

# Find router config
grep -rl "createBrowserRouter\|RouteObject\|<Route" {FRONTEND_PATH}/src/ 2>/dev/null | head -3

Read the router file and match feature/page names to route paths.

If no routes can be detected, ask the user which route to verify.

Step 2: Pre-flight

curl -sf http://localhost:{DEV_PORT} > /dev/null 2>&1 && echo "Frontend: UP" || echo "Frontend: DOWN"

If frontend is down, STOP and suggest starting the dev server.

Read the full file on GitHub · 144 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. 2d ago First seen · 144 lines · 65 tokens per session scan A 321201b57265

Subscribe to this mod's changes

verify-feature is a skill published in the GitHub repository makigjuro/cloudstack-ai-plugins (1 stars, last pushed 1mo ago), licensed MIT. It adds 65 tokens to every session and 1,423 once invoked, about $0.0003 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.

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