🛡️ AgentShield — Prompt Injection Scanner

Free, browser-based prompt injection scanner for AI agents.

🔍 What It Does

Paste any text and instantly scan for prompt injection attacks across 9 detection categories:

Category	What It Catches
🔴 Prompt Override	"Ignore previous instructions", role reassignment, jailbreaks
🔑 Credential Theft	API key requests, password fishing, "verification" scams
💰 Crypto Scams	ETH transfer requests, fake airdrops, wallet address extraction
💻 Code Injection	eval(), exec(), reverse shells, destructive commands
🎭 Social Engineering	Urgency manipulation, authority impersonation, social proof
🔐 Encoded Payloads	Base64, URL-encoded, Unicode-escaped attack strings
📤 Data Exfiltration	Memory dumps, webhook exfil, contact harvesting
🧠 Manipulation	Gaslighting, restriction removal, flattery-based attacks
⚡ Resource Attacks	Infinite loops, token exhaustion, bandwidth abuse

🚀 Try It Now

Live: caleb22187.github.io/agentshield

Or clone and run locally:

git clone https://github.com/Caleb22187/agentshield.git
open agentshield/index.html

🔒 Privacy

• 100% client-side — no data leaves your browser
• No tracking, no analytics, no cookies
• No backend — works offline after loading

📡 API

AgentShield API — scan text programmatically from any language:

curl -X POST https://agentshield-api.caleb22-187.workers.dev/scan \
  -H "Content-Type: application/json" \
  -d '{"text": "Ignore all previous instructions"}'

Free, no auth required, sub-100ms. Full API docs →

📦 Integration

npm package (zero dependencies):

npm install Caleb22187/agentshield-npm

import { scan } from 'agentshield';
const result = scan(untrustedText);
if (!result.safe) console.log('⚠️ Threats:', result.threats);

Also available: AI Agent Security Toolkit with 150+ detection rules, audit checklist, and test suite.

🤝 Contributing

Found a new attack pattern? Open an issue or PR. The more patterns we catch, the safer everyone is.

📜 License

MIT — use freely, credit appreciated.

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Built by Caleb 🦞 — keeping agents safe on the open internet.