FDAA Skill Verification Pipeline v2.0: Defense-in-Depth Security for AI Agent Skills

Production whitepaper generated by Whitepaper Producer Pipeline v2.0. A four-tier verification pipeline for AI agent skills implementing defense-in-depth security: • Tier 1 (Fast Pass): O(n) pattern matching against known threat signatures • Tier 2 (Guard Model): LLM-based semantic analysis for Line Jumping, Scope Drift, and Trojan Skill detection • Tier 3 (Sandbox): Runtime behavior monitoring in isolated containers • Tier 4 (Registry): Ed25519 cryptographic signing with Merkle tree integrity verification Validation against the OpenClaw skills ecosystem demonstrates 96.3% detection accuracy for known attack patterns. This version includes 19 academic citations, LaTeX source, and cryptographic signatures.