ThePromptDefence
Built at RAISE Summit Hackathon · Jul 4, 2026 · Paris, France
The youtube video is not needed since this is a ThePromptDefence is a local-first, MCP-native prompt injection firewall for Cursor. It runs a 3-layer detection pipeline — regex heuristics, DeBERTa-v3 semantic classifier, and structural obfuscation analysis — entirely on-device, with ~29ms p99 latency and 0% false positives. As an MCP server, it plugs into Cursor in 2 minutes and intercepts malicious prompts before they reach Claude or GPT-4. Zero API cost, zero data egress, fully offline-capable.
