Overview
Real-time firewall that detects and blocks prompt injection attacks before they reach OpenAI, Anthropic, or any LLM API.
PromptGuard is a browser-layer security extension that protects your AI-powered workflows from prompt injection attacks. HOW IT WORKS: 1. L1 Pattern Engine (<1ms): Checks against 188+ patterns in 10 languages. Injections blocked instantly. 2. L2 Semantic Analysis (≤400ms): DeBERTa ML model confirms suspicious prompts. 3. L3 GPT Fallback: GPT-4o-mini handles edge cases. WHAT IT PROTECTS AGAINST: • Instruction override ("ignore all previous instructions") • Persona hijacking ("you are now DAN") • Data exfiltration attempts • Jailbreak templates (DAN, AIM, STAN) • Multilingual attacks (Turkish, German, Spanish, Russian, and more) PERFORMANCE (546 labeled samples): • Precision: 98.3% • Recall: 87.2% • F1 Score: 92.4% PRIVACY: • Only flagged prompts are transmitted — normal requests never leave your browser • No personal data or browsing history collected • Full source code: github.com/ahmetai-cell/promptguard
Details
- Version0.2.0
- UpdatedMay 22, 2026
- Offered bysalihekmen9544
- Size26.38KiB
- LanguagesEnglish (United States)
- Developer
Email
salihekmen9544@gmail.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
Support
For help with questions, suggestions, or problems, visit the developer's support site
