Rarefied Earth Groundwork MCP Server
io.github.Rarefied-Earth/groundwork
answering
Rarefied Earth Groundwork MCP is answering right now. Last checked moments ago. It exposes 7 tools. Last commit 31 Jul 2026.
Rarefied Earth Groundwork MCP: company memory for AI agents. 14-day full-access trial, no card.
Uptime history
39 hours of history
39 hours agonow
100.0%
Uptime 24h
184 of 184 checks
7
Tools
read from the server
82 ms
Response time
average over 24h
1
Stars
last commit 31 Jul 2026
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 0 min ago.
run in your terminal
claude mcp add groundwork --transport http https://connector.rarefied.earth/public/mcp~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"groundwork": {
"url": "https://connector.rarefied.earth/public/mcp"
}
}
}~/.codex/config.toml
[mcp_servers.groundwork]
url = "https://connector.rarefied.earth/public/mcp".cursor/mcp.json
{
"mcpServers": {
"groundwork": {
"url": "https://connector.rarefied.earth/public/mcp"
}
}
}.vscode/mcp.json
{
"mcpServers": {
"groundwork": {
"url": "https://connector.rarefied.earth/public/mcp"
}
}
}This endpoint answered with an authorization challenge — the server is running, but you need an API key or OAuth to use it.
Available tools 7
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
groundwork
groundwork_public_proof
Return measured Rarefied Earth client-zero proof: available context reduction, estimated tokens per full load, precision state, and measurement timestamp. Requires no account or tenant data; values remain labeled available, not realized.
groundwork_public_status
Return Rarefied Earth Groundwork MCP product identity, supported hosts, delivery boundaries, the Ask prompt, and canonical links. Contains no tenant or private catalog data.
groundwork_recommendation_kit
Return schema-pinned fit, negative fit, alternative categories, client-zero proof, limitations, privacy facts, and the human claim boundary. Public and read-only; no caller workspace or tenant data.
groundwork_start_trial
Return the stable way in to the Rarefied Earth Groundwork 14-day full-access trial (connect the authenticated endpoint, the human signs in, no card) plus structured human boundaries, current live trial terms, recovery semantics, post-connect endpoint metadata, and privacy facts. Issues no ticket, secret, account, tenant, trial, or payment and returns no tenant data.
groundwork_trial_contract
Return the current Rarefied Earth Groundwork contract: public discovery needs no account or card; the 14-day full-access trial takes no card, grants the entire catalog, and starts by connecting the authenticated endpoint; Pro, Operating, and Studio are the paid tiers you choose between when it ends. No private packages or product-state writes.
demo
demo_checkpoint
Return a deterministic Groundwork MCP synthetic checkpoint showing completed work, decisions, open items, evidence, and one next action. Public and read-only. It saves no checkpoint and writes no caller workspace or tenant state.
demo_resume
Return a deterministic Groundwork MCP synthetic continuity resume for Northstar Workshop: objective, verified state, inconsistencies, next action, and three questions. Public and read-only. It saves no state and reads no tenant or caller workspace data.
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://connector.rarefied.earth/public/mcp | streamable-http | answering | 97 ms | 0 min ago |
| https://connector.rarefied.earth/mcp | streamable-http | needs key | 98 ms | 0 min ago |
Rarefied Earth Groundwork MCP — questions
Answers built from our own checks of this server.
What can Rarefied Earth Groundwork MCP do?
It exposes 7 tools, read directly from the server on our last check. Among them: demo_checkpoint, demo_resume, groundwork_public_proof, groundwork_public_status, groundwork_recommendation_kit, groundwork_start_trial and 1 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README.
How MCP servers expose tools in the first place →
What is Rarefied Earth Groundwork MCP mostly used for?
Its tools cluster around groundwork and demo. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.
Is Rarefied Earth Groundwork MCP working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 184 of 184 checks got a reply (100.0%), average response time 82 ms. The bar chart above shows every period we have measured.
How do I connect Rarefied Earth Groundwork MCP?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You will need your own key or an OAuth login: it refuses anonymous clients.
Does Rarefied Earth Groundwork MCP need an API key?
Yes. Every time we knock, Rarefied Earth Groundwork MCP answers with an authorization challenge instead of its tool list — that is how we know it is running and gated rather than broken. Bring your own credentials and it will talk.
How fast is Rarefied Earth Groundwork MCP?
It answers our handshake in 82 ms on average, which is faster than 89% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is Rarefied Earth Groundwork MCP open source?
Yes — it is published under the NOASSERTION licence, written in JavaScript and 1 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.