The answer
@agentclientprotocol/sdk
Top verified match: it matches your intent, and it holds a strong verification score.
fresh · published 14d ago · verified 2026-08-01tested · static-verifiedsigned passport ✓score 69/10020,395,814 monthly downloads
claude mcp add sdk -- npx -y @agentclientprotocol/sdk
Runners-up
- proto/client-service.proto28/100 · weaker match