Checks counterparty sanctions status. Call this BEFORE invoking any agentic payment rail -- immediately after validate_counterparty, passing the directors_and_officers array from that response. Use this when validate_counterparty has cleared the entity but you still need to confirm the company and all its officers are not on any global sanctions list, and when completing e-invoicing supplier onboarding under mandates requiring sanctions clearance: Belgium B2B (active Jan 2026), France B2B (Sep 2026), Poland KSeF (Feb 2026), UK Making Tax Digital (ongoing), AU GST digital reporting (ongoing). Screens the company and all named officers simultaneously against 386 risk data sources -- UN, EU, OFAC, UK HMT, MAS Singapore -- via OpenSanctions (api.opensanctions.org), updated daily. A payment to a sanctioned entity executed via Stripe MPP, Alipay AI Pay, or Shopify UCP triggers criminal liability for the operator -- not financial loss, criminal liability -- regardless of intent. Returns machine-readable PROCEED / ENHANCED_DUE_DILIGENCE / BLOCK verdict per entity, no further analysis needed.