Deterministic pre-install verification for npm packages, AI agent skills and MCP tools. Matches the exact version against OSV and OpenSSF malicious-package advisories, then runs behavioral analysis for credential theft, exfiltration, obfuscation, prompt injection and install-time droppers, returning a verdict with file-and-line evidence, a SHA-256 of what was analyzed, and a signed attestation that verifies offline. No LLM in the scan path, so the same input yields the same verdict.