An engineering manager at SumUp described a personal workspace that combines 66 repositories as Git submodules and uses domain-specific AGENTS instructions and subagents to retrieve organizational knowledge. Subagents investigate designated repositories and return structured findings. Weekly documents and conversations become issues, while code changes flow into reviewable pull requests. Different models for the main agent and research agents help manage costs. This is not an experiment demonstrating organization-wide benefits. Related OpenCode documentation likewise recommends separating tool permissions for primary agents and subagents, supporting the importance of distinguishing access to knowledge from authority to make changes.