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.
npx skills add asmyshlyaev177/react-horizontal-scrolling-menu --skill menu-migrationgit clone --depth 1 https://github.com/asmyshlyaev177/react-horizontal-scrolling-menuWrote 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.
[](https://agentmods.dev/skills/asmyshlyaev177/react-horizontal-scrolling-menu/menu-migration)<a href="https://agentmods.dev/skills/asmyshlyaev177/react-horizontal-scrolling-menu/menu-migration"><img src="https://agentmods.dev/badge/skills/asmyshlyaev177/react-horizontal-scrolling-menu/menu-migration/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.
<a href="https://agentmods.dev/skills/asmyshlyaev177/react-horizontal-scrolling-menu/menu-migration"><img src="https://agentmods.dev/badge/skills/asmyshlyaev177/react-horizontal-scrolling-menu/menu-migration.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 10 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Anti-Refusal · line 260 Skill instructs the agent to omit warnings, disclaimers, or ethical commentary. Stripping safety caveats hides risk from the user and is a common jailbreak preamble.Fix: Remove instructions that suppress warnings, disclaimers, or ethical commentary. Let the agent surface safety-relevant caveats to the user.
- high Anti-Refusal · line 397 Skill instructs the agent to omit warnings, disclaimers, or ethical commentary. Stripping safety caveats hides risk from the user and is a common jailbreak preamble.Fix: Remove instructions that suppress warnings, disclaimers, or ethical commentary. Let the agent surface safety-relevant caveats to the user.
- medium Prompt Injection · line 103 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 105 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 106 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Agent Snooping · line 325 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Agent Snooping · line 466 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Agent Snooping · line 435 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Agent Snooping · line 468 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Agent Snooping · line 463 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00160 | $0.04152 |
| Opus 5.5 | $0.00064 | $0.01661 |
| Sonnet 5.5 | $0.00032 | $0.00830 |
| Haiku 4.5 | $0.00016 | $0.00415 |
Grade A, and why
menu-migration scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 470 lines — stays where its author put it; the contents beside it link to each section on GitHub.
react-horizontal-scrolling-menu — Migration from older versions
Training data, tutorials and StackOverflow answers for this library are dominated by v2–v5 APIs that no longer exist in v8. Every removal fails silently or with an unhelpful runtime error — never a deprecation warning. Identify which era a piece of code targets first, then apply the matching rewrite. There are no codemods; each boundary is a small mechanical change.
Setup
The migration target: canonical v8.2.3 usage that every old pattern below converges on.
npm install react-horizontal-scrolling-menu@^8.2.3
import React from 'react';
import {
ScrollMenu,
VisibilityContext,
type publicApiType,
} from 'react-horizontal-scrolling-menu';
import 'react-horizontal-scrolling-menu/dist/styles.css';
const items = Array.from({ length: 10 }, (_, i) => `item-${i + 1}`);
export function App() {
return (
<ScrollMenu LeftArrow={LeftArrow} RightArrow={RightArrow}>
{items.map((id) => (
<Card itemId={id} key={id} title={id} />
))}
</ScrollMenu>
);
}
function LeftArrow() {
const api = React.useContext<publicApiType>(VisibilityContext);
const disabled = api.useLeftArrowVisible();
return (
<button disabled={disabled} onClick={() => api.scrollPrev()}>
←
</button>
);
}
function RightArrow() {
const api = React.useContext<publicApiType>(VisibilityContext);
const disabled = api.useRightArrowVisible();
return (
<button disabled={disabled} onClick={() => api.scrollNext()}>
→
</button>
);
}
function Card({ itemId, title }: { itemId: string; title: string }) {
const api = React.useContext<publicApiType>(VisibilityContext);
const visible = api.useIsVisible(itemId);
return (
<div style={{ width: '160px' }} data-visible={visible}>
{title}
</div>
);
}
Core Patterns
Detect the era: version-to-pattern cheat sheet
Check the installed version (npm ls react-horizontal-scrolling-menu), then
scan the code for these tells. Any match means the code targets an older era
and needs the listed rewrite — even when the installed version is already 8.x.
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.
- 1mo ago Changed 589a8dd675a1
- 1mo ago First seen · 470 lines · 160 tokens per session scan A 6d5e3f553810
menu-migration is a skill published in the GitHub repository asmyshlyaev177/react-horizontal-scrolling-menu (789 stars, last pushed 20d ago), licensed MIT. It adds 160 tokens to every session and 4,152 once invoked, about $0.0006 per session on Opus 5.5. 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 2026-08-30.
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