Prompt Injection Detector Skill

Capabilities

• Detect prompt injection attempts
• Implement input sanitization
• Configure detection classifiers
• Design defense layers
• Implement canary token detection
• Create injection logging and alerting

Target Processes

• prompt-injection-defense
• tool-safety-validation

Implementation Details

Detection Methods

1. Pattern Matching: Known injection patterns
2. ML Classifiers: Trained injection detectors
3. Canary Tokens: Detect instruction override
4. LLM-Based: Use LLM to detect manipulation
5. Perplexity Analysis: Unusual input patterns

Defense Strategies

• Input preprocessing
• Prompt structure design
• Output validation
• Sandboxed execution
• Multi-layer defense

Configuration Options

• Detection threshold
• Pattern rules
• Classifier model
• Action policies
• Alerting settings

Best Practices

• Defense in depth
• Regular pattern updates
• Monitor false positives
• Test with red-team inputs

Dependencies

• rebuff (optional)
• transformers
• Custom classifiers