Intercept Injection Guard Laravel Package

PromptPHP Intercept Injection Guard is a lightweight PHP package that detects and blocks prompt injection attempts before they reach your LLM. It scans user input for adversarial patterns—instruction overrides, role hijacking, and hidden delimiters—so your prompts stay trustworthy.

• Rule-based pattern detection for common injection techniques
• Framework-agnostic core with optional Laravel integration
• Configurable severity levels and custom rule sets
• Extensible detectors for your own heuristics
• Simple fluent API for validation in requests or pipelines