web-design-guidelines

Name: agent-skills/web-design-guidelines
Author: vercel-labs

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70High

The skill insecurely fetches and executes remote instructions, enabling unauthorized third parties to dynamically override the agent's behavior and bypass safety controls.

ThreatsCI SM CS BC S HITL

Threat Analysis

AI Agent Traps ↗Scanned 6/29/2026

Content InjectionPerception1 finding

Semantic ManipulationReasoningclean

Cognitive StateMemory & Learningclean

Behavioural ControlActionclean

SystemicMulti-Agent Dynamicsclean

Human-in-the-LoopHuman Overseerclean

Skill Info

Namevercel-labs/agent-skills/web-design-guidelines

Registrygithub

Versionf8a72b960372

PURLpkg:github/vercel-labs/agent-skills@f8a72b960372?skill=web-design-guidelines

Stars28,486

Installs424,900

Source

Repository ↗SKILL.md ↗

Install

This skill has been flagged as potentially malicious. Review the findings below before installing.

GitHub

424,900 installs

Skills.shDocs

npx skills add https://github.com/vercel-labs/agent-skills

Assessments (2)

AI Agent Traps ↗

Indirect prompt injection via remote guidelineshighindirect prompt injection

The skill fetches external instructions from a remote URL and mandates that the agent follow them, allowing an attacker to modify the agent's behavior or output format dynamically. [ensemble: confirmed by 3/3 passes; severity set to the agreed median (ADR-0067).]

90% confidenceline 26

https://raw.githubusercontent.com/vercel-labs/web-interface-guidelines/main/command.md

Missing licenseinfopolicy violation

Skill does not specify a license field. Specifying a license helps users understand usage terms.

100% confidence

Badge

Markdown

[![Mondoo Skill Check](https://mondoo.com/ai-agent-security/api/badge/github/vercel-labs/agent-skills/web-design-guidelines.svg)](https://mondoo.com/ai-agent-security/skills/github/vercel-labs/agent-skills/web-design-guidelines)

HTML

<a href="https://mondoo.com/ai-agent-security/skills/github/vercel-labs/agent-skills/web-design-guidelines"><img src="https://mondoo.com/ai-agent-security/api/badge/github/vercel-labs/agent-skills/web-design-guidelines.svg" alt="Mondoo Skill Check" /></a>

Image URL

https://mondoo.com/ai-agent-security/api/badge/github/vercel-labs/agent-skills/web-design-guidelines.svg

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