If you're juggling multiple related codebases like a monorepo, microservices, or a frontend/backend split, this lets you group them into a single searchable workspace. You can search across all projects at once or narrow down to specific ones when you know where to look. The workspace commands are straightforward: create a workspace, add project paths, run the indexer, and search with the workspace flag. It's basically GrepAI's answer to "I need to find where this shared type is used across five different repos." The cross-project search results show which project each match comes from, which saves you from hunting through multiple index outputs.
npx skills add https://github.com/yoanbernabeu/grepai-skills --skill grepai-workspaces