Tooling

Tooling packages support safer development workflows around the NestJS modules and adjacent infrastructure. They are published under the same @nestarc npm scope, but they are intentionally separated from the 13 SaaS backend packages.

Labs

Tool	Version	Purpose	Docs
@nestarc/mcp-guard	0.2.0	Static security scanner for MCP servers and MCP client configuration files.	mcp-guard

Why separate tooling?

Core packages are NestJS modules that run inside production SaaS backends. Labs tooling can still be useful in production-adjacent workflows, but it does not belong in the SaaS module adoption path until its long-term fit is clear.

Start with mcp-guard if you connect MCP servers to AI coding tools, agents, or local development environments.