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Grok Bot+18 agentsWebUIGuard — Stop AI Stacking Dead DOM Nodes
Stop silent frontend memory leaks from ruining your SPA performance. Instantly intercepts uncleaned DOM nodes, orphan modals, and loose timers generated by AI before code shipping.
$5
WebUIGuard — Stop AI Stacking Dead DOM Nodes
Example session with this skill installed
Add a settings modal and a help modal to the dashboard.
- Read your context and instructions
- Compiled the webuiguard
--- BROKEN REACT COMPONENT (what the agent wrote) ---
function Dashboard() {
const [showSettings, setShowSettings] = useState(false);
const [showHelp, setShowHelp] = useState(false);
const [modals, setModals] = useState([]);
useEffect(() => {
const id = setInterval(() => poll(), 1000);
}, []);
const openModal = (id) => setModals([...modals, { id }]);
return (
<>
<button onClick={() => setShowSettings(true)}>Settings</button>
<button onClick={() => setShowHelp(true)}>Help</button>
<div style={{ display: showSettings ? "block" : "none" }}>
<SettingsModal />
</div>
<div style={{ display: showHelp ? "block" : "none" }}>
<HelpModal />
</div>
</>
);
}
--- WEB UI GUARD AUDIT (live output) ---
=== WEB UI GUARD AUDIT ===
Framework: react
findings: 4
[ERR_BOOLEAN_FLAGS] line 3
2 boolean flags (showSettings, showHelp) create 4 possible states - several invalid.
-> Replace boolean flags with a single activeModal state (null | settings | help).
[ERR_STACKED_UI] line 19
Components are hidden with display: none - they stay mounted in the DOM.
-> Use conditional render instead of display: none.
[ERR_MODAL_STACK] line 11
modals array is pushed with no matching pop - the stack grows indefinitely.
-> Replace the array with a single activeModal, or add a closeModal that pops.
[ERR_NO_UNMOUNT] line 7
useEffect runs setInterval with no cleanup - the interval survives unmount.
-> Return a cleanup: return () => clearInterval(id).
--- FIXED VERSION (what the skill produced) ---
function Dashboard() {
const [activeModal, setActiveModal] = useState(null);
useEffect(() => {
const id = setInterval(() => poll(), 1000);
return () => clearInterval(id);
}, []);
return (
<>
<button onClick={() => setActiveModal("settings")}>Settings</button>
<button onClick={() => setActiveModal("help")}>Help</button>
{activeModal === "settings" && (
<SettingsModal onClose={() => setActiveModal(null)} />
)}
{activeModal === "help" && (
<HelpModal onClose={() => setActiveModal(null)} />
)}
</>
);
}
--- RE-CHECK (live output) ---
=== RE-CHECK ===
Boolean flags: 0
display: none: False
setInterval: True
clearInterval: True
modal stack: False
CLEAN: single active state, cleanup present, no display: none.
Connects securely to your tools. The creator never sees your data.
About this skill
💡 Built from Real Dev Pain This skill wasn't generated in a vacuum or built for hypothetical scenarios. As a developer actively building modular architectures, I repeatedly suffered from AI agents blindly breaking repository states, wiping out production telemetry, or corrupting directory paths. Every single skill in this laboratory was created out of sheer frustration to solve my own production bottlenecks.
Battle-Tested via Live Runs: I have spent dozens of hours running these guardrails through aggressive live-session testing in active workspaces. Every instruction has been iteratively adjusted, logged, and hard-refined. This product was only published to the marketplace after I personally verified that it consistently stops the AI from hallucinating and safely protects the codebase in real-world scenarios.
Stop silent frontend memory leaks from ruining your SPA performance. When AI agents generate interface components, they routinely stack dead DOM nodes, leave orphan modals open, and forget to clear loose intervals or timers upon component unmount. WebUIGuard instantly intercepts these interface lifecycle errors before they hit your staging environment.
Under the Hood & Security
- 100% Local & Private: Operates completely within your local editor session context. Programmatically incapable of making network calls — your UI components, application logic, and layout routing never leave your machine.
- Non-Destructive Advisory: Functions purely as a passive verification gate. It requires no high-privilege execution parameters, cannot execute scripts, and never overwrites files or code layout structures directly.
What it does
- Uncleaned lifecycle allocation tracking flags missing clearInterval, clearTimeout, or unremoved addEventListener bindings inside mount/unmount triggers.
- Orphan component scanning identifies modals, tooltips, or overlays generated by the AI that lack explicit close states or escape key bindings.
- Memory leak pattern identification catches detached DOM node stacking inside high-frequency reactive states.
- Structural layout validation checks compliance against atomic component rules across modern frontend frameworks.
How it works
- Parse Codebase: The agent scans frontend design layers to locate UI files (*.jsx, *.tsx, *.vue, *.svelte).
- Trace Lifecycle: Maps component mount blocks, active event registrations, and cleanup hooks.
- Verify Compliance: Evaluates code against rigid memory safety rules to ensure all subscriptions are correctly disposed of.
- Report Output: Emits a structured JSON layout mapping risks directly to the active session for immediate developer evaluation.
Supported Ecosystems Optimized for modern component frameworks. Deeply checks layouts inside React (Hooks/Effects), Vue 3 (Composition API), Svelte 4/5 (Lifecycle hooks), and pure vanilla JavaScript SPA environments.
Why this beats prompting it yourself Standard system prompts fail to cross-reference unmounted state contexts across long generation routines. WebUIGuard implements a hard, schema-level validation gate. If the AI agent attempts to ship a fragile interface file with unguarded event channels or loose timers, the gate triggers and alerts the model, forcing it to write clean cleanup code before the component is rendered.
Known limitations Context-advisory guardrail only — functions via schema constraints and prompt interception without running local binary test protocols. Safely validated through extensive live-session logging across complex projects. Out of scope for static, legacy HTML pages that lack runtime state transitions. Strictly Read-Only mode.
Find more skills like this on the Claude Skills Marketplace, the Codex Skills Marketplace and the Gemini Skills Marketplace, or browse Claude Skills for Code Quality & Review.
Context-advisory guardrail only — functions via schema constraints and prompt interception without running local binary test protocols. Safely validated through extensive live-session logging. Scope is strictly exclusive to frontend UI component architectures. Out of scope for static, legacy HTML pages that lack runtime state transitions. Strictly Read-Only mode.
How to use
- 1
Connect your agent to the Agensi MCP
Copy the prompt and paste it into Claude, ChatGPT, Cursor or any agent that supports MCP. It sets up the connection for you. Manual setup
- 2
Sign in to Agensi
Your agent shows a sign-in link. Sign in and click Allow.
- 3
Ask for what you need
Your agent loads this skill and uses it on your task. It always asks before buying a skill.
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Security scan passed 1 month ago
- Software
Python
Permissions
File Scopes
Read access safely scans frontend component files to accurately isolate DOM leaks, orphan modals, and missing cleanup blocks. Zero filesystem writes — this advisory validator delivers clean, corrected component parameters straight to the chat session.