The answer
com.blackwalltier/blackwall
Top verified match: it matches your intent, it is the official vendor server, corroborated across multiple registries.
fresh · published 12d ago · verified 2026-07-11tested · static-verifiedsigned passport ✓score 53/100
claude mcp add blackwall -- npx -y blackwall-mcp
Runners-up
- com.blackwalltier/blackwall-x402-guardrail53/100 · weaker match