ui-responsive — agentic threat model
The ui-responsive plugin presents low inherent agentic risk due to its passive, non-blocking coaching nature, but poses supply-chain and integration risks as a local CLI plugin with access to the host agent's file-writing hooks.
OWASP AIVSS score rationale
| Autonomy of Action | 0.10 | |
| Goal-Driven Planning | 0.10 | |
| Self-Modification | 0.00 | |
| Dynamic Tool Use | 0.10 | |
| Persistent Memory | 0.00 | |
| Contextual Awareness | 0.30 | |
| Dynamic Identity | 0.00 | |
| Multi-Agent Interactions | 0.20 | |
| Non-Determinism | 0.20 | |
| Opacity & Reflexivity | 0.10 |
Scored with the canonical OWASP AIVSS formula (AIVSS calculator reference); agentic risk factors estimated from the agent’s described capabilities.
MAESTRO 7-layer threat model
Per-layer threats for this agent. Layers tagged “not certain from listing” are general, caveated commentary where the public description didn’t pin that layer.
Not certain from the listing — The plugin likely relies on the host model (e.g., Claude) to analyze CSS. It is vulnerable to indirect prompt injection if malicious CSS comments are crafted to manipulate the model's coaching output.
Not certain from the listing — The plugin reads local stylesheets. If path traversal vulnerabilities exist, or if sensitive data is stored within CSS files, there is a risk of unauthorized data access or exposure.
The plugin integrates directly into the host agent's framework via a PostToolUse hook. A vulnerability in this integration could allow a malicious stylesheet to hijack the post-write hook execution flow.
Not certain from the listing — It runs locally within the user's CLI environment (Claude Code). If the host environment lacks sandboxing, a compromised plugin could execute arbitrary commands on the developer's machine.
The plugin acts as a non-blocking observability tool for CSS quality, but it lacks its own security logging or guardrails to detect if its own analysis is being bypassed or manipulated.
Not certain from the listing — There are no mentioned security controls, access policies, or compliance audits. It operates with the full permissions of the user running the CLI tool.
As an agent plugin, it establishes an ecosystem relationship with Claude Code. The primary agent implicitly trusts the plugin's 'additionalContext' output, creating a vector for downstream manipulation of the main agent's decisions.
MAESTRO — the 7-layer agentic threat-modeling framework (Cloud Security Alliance / Ken Huang).