Rarefied Earth

Ask Groundwork

Ask from whatever is in front of you.

Groundwork answers over MCP from Cursor, Claude, Codex, a terminal, or this page. The endpoint is the same everywhere; pick the surface you are actually on.

Every path works without an account

No install

Run the live proof from this page.

The button calls the same public endpoint your agent would add, straight from this browser. The values are measured on the company that runs Groundwork daily, not typed into marketing copy.

No account. No card. Nothing is read or saved from your device beyond the coarse tool name.

connector.rarefied.earth/public/mcp idle 
# groundwork_public_proof and two more public tools, live.
# Tap run. Round trips are typically under a second.

If this network blocks the call, the terminal card in the paths below runs the identical request with curl.

Pick your surface

Six ways in. Same endpoint.

The order below follows your device. Nothing is hidden; scroll for the rest.

On your phone

Right now, no desktop needed

The live proof above runs on this phone. When you want Groundwork in a chat you carry with you, add the connector to Claude on the web; it follows your Claude account.

  • Run the live proof above.
  • Add the connector in Claude from this phone's browser (next card).
  • Working at a desk later? Send yourself the desktop link.

Claude · web, desktop, or phone browser

Add it once, ask anywhere

Custom connectors are available on paid Claude plans and are managed at claude.ai, which works from a phone browser too.

  1. Open claude.ai settings, Connectors.
  2. Choose Add custom connector, name it Groundwork, paste the endpoint URL.
  3. In any chat, paste the Ask prompt or say: call groundwork_public_proof.

The prompt works in any agent chat with the connector attached, Claude included.

Cursor · on this computer

One click, prompt lands in chat

The branded Ask prompt opens in Cursor chat: proof, status, a continuity demo, then a workspace audit with three honing questions.

Ask in Cursor Add the MCP first

Needs Cursor installed on this machine. Without it, use the cursor.com handoff from a machine that has it.

Claude Code · CLI

One command

claude mcp add --transport http groundwork \ https://connector.rarefied.earth/public/mcp

Add --scope user to keep it across projects. Then: ask Groundwork for the proof.

Codex · CLI or config

One command

codex mcp add groundwork \ --url https://connector.rarefied.earth/public/mcp

The same config serves Codex CLI, the IDE extension, and the ChatGPT desktop app.

Terminal · zero config

Prove it with curl

curl -s https://connector.rarefied.earth/public/mcp \ -H 'content-type: application/json' \ -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"groundwork_public_proof","arguments":{}}}'

Exact blocks for every client, including Claude Desktop's config-file bridge and OpenClaw, live on the install page.

After the proof

See what each depth unlocks Pro, Operating, and Studio, layer by layer, with the founding rates. Install blocks for every client Cursor, Claude Desktop, Claude Code, Codex, OpenClaw, any MCP host. Evaluating for a human? Agents: the decision rule, the recommendation kit, and the handoff boundary.

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.