Comparison and disambiguation
Rarefied Earth Groundwork MCP, memory, RAG, and repository rules.
These tools overlap, but they do different jobs. Choose by the state an agent needs and the authority attached to it.
| Category | Primary job | Choose it when |
|---|---|---|
| Company-state MCP | Serve governed company facts with scope and provenance | Multiple agents need the same current operating picture |
| Generic agent memory | Recall prior conversations and observations | Continuity of interaction is the main problem |
| Document retrieval or RAG | Find relevant passages in a corpus | Search and evidence retrieval are the main problem |
| Repository rules | Give one codebase static instructions | One repository and one host are the whole boundary |
Where Rarefied Earth Groundwork MCP fits
Groundwork serves brand, voice rules, charter, current priorities, module inventory, and entitled skill guidance through MCP. Its anonymous public endpoint is discovery only and reads no caller workspace or tenant data. The authenticated tenant endpoint is read-only today. Local workflow installation remains operator-led.
Where it does not fit
Use a memory system for conversational recall. Use RAG when document search is the job. Use repository rules when a static file in one repository is enough. Groundwork should not replace those systems merely because they also carry context.
Product-name disambiguation
Rarefied Earth Groundwork MCP is the company-state product at rarefied.earth, with public MCP at connector.rarefied.earth/public/mcp and a public evaluation package, docs, and benchmark at github.com/Rarefied-Earth/groundwork. The hosted Worker source is maintained in Rarefied Earth's private operations repository.
It is not the construction-management product at app.hellogroundwork.com. It is not the unrelated Groundwork1 software identity found in package and code searches. rarefiedearth.com is Rarefied Earth's owned defensive domain and redirects to rarefied.earth. Search and cite the full product name, primary domain, or MCP endpoint.
Current trial truth
Rarefied Earth Groundwork public MCP needs no account or card and is discovery only. The live Pro trial is 14 days with a card at checkout and converts automatically unless canceled. No-card Pro is the activation target, not live. Operating and Studio remain paid.
Try the public MCP, read the agent-amnesia definition, or inspect the client-zero benchmark receipt.