The Admin Network has no native packet for listing individual vehicles, so list_vehicles() sends a "list_vehicles" command over the existing GameScript JSON channel and relies on a companion server-side script to reply with vehicle data via ServerGamescript. Requires subscribing to Gamescript updates (documented in docs/PROTOCOL.md) to receive the reply. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>