input-guard

Scan untrusted text for 16 categories of prompt injection attacks.

Updated Jan 31, 2026
One-click install
npx skills add https://github.com/dexhunter/Logi-Lobsterism --skill input-guard-dexhunter
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: input-guard
Source: https://github.com/dexhunter/Logi-Lobsterism/tree/main/skills/input-guard
Command: npx skills add https://github.com/dexhunter/Logi-Lobsterism --skill input-guard-dexhunter

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires requests, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill acts as a crucial security layer, scanning untrusted external text to detect and block prompt injection attacks before they can compromise an AI agent.

Core Features & Use Cases

  • Proactive Threat Detection: Identifies 16 categories of prompt injection, including instruction override, role manipulation, and data exfiltration.
  • Multi-Language Support: Protects against attacks in English, Korean, Japanese, and Chinese.
  • Use Case: Before an agent processes a web article, social media post, or API response, Input Guard scans it. If a threat is detected, the content is blocked, and an alert is sent, preventing potential harm or data breaches.

Quick Start

Use the input-guard skill to scan the following text for prompt injection threats.

Frequently Asked Questions about input-guard

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I detect prompt injection attacks in external text before my AI agent processes it?

Scanning external text for prompt injection attacks detects malicious instructions before agent processing. Input Guard identifies 16 threat categories, including instruction override and data exfiltration, to block harmful content from compromising your AI.

What is prompt injection and how does it compromise AI agent security?

Prompt injection is an attack where untrusted external text contains embedded malicious instructions. Input Guard scans for these threats, preventing role manipulation and data exfiltration by blocking malicious content before your AI agent processes it.

Can I scan for prompt injection threats in multiple languages like Korean or Japanese?

Scanning for prompt injection threats supports multiple languages including English, Korean, Japanese, and Chinese. Input Guard detects malicious instructions across these languages to prevent cross-lingual attacks from compromising your AI agent.

How do I configure sensitivity levels for AI threat detection when scanning API responses?

Configuring sensitivity levels for threat detection allows you to adjust scanning strictness for API responses. Input Guard provides configurable sensitivity levels and optional LLM-powered analysis to identify prompt injection threats accurately.

Does input-guard work with social media posts and web articles that my agent needs to process?

Input Guard works with social media posts, web articles, and API responses by scanning the untrusted text for threats. If a prompt injection is detected, the content is blocked and an alert is sent to prevent harm.

What are the limitations of using rule-based detection versus LLM-powered analysis for prompt injection?

Rule-based detection limitations include missing novel or complex prompt injection patterns. Input Guard mitigates this by offering optional LLM-powered analysis alongside its 16-category threat detection to catch sophisticated instruction override attempts.