All three MCP servers used `npx -y <package>` without version pins,
causing npx to auto-install the latest version on each invocation.
A compromised or breaking release would silently affect all users.
Pinned to current stable versions verified against npm registry:
- @playwright/mcp@0.0.70
- @upstash/context7-mcp@2.1.8
- deepwiki-mcp@0.0.6
Update these pins deliberately when upgrading rather than auto-pulling.
Co-Authored-By: Claude Code <noreply@anthropic.com>