Rarefied Earth Groundwork MCP

Name: Rarefied Earth Groundwork MCP
Author: Rarefied-Earth

by Rarefied-Earthversion 1.7.1i★ 1iRuns in the cloud

Registry nameio.github.Rarefied-Earth/groundwork

How to install

What it does

Rarefied Earth Groundwork MCP: company memory for AI agents. 14-day full-access trial, no card.

Connects Runs in the cloud
Account or key No key needed
Category Search & AI memory

Install

Pick the AI app you use, then copy the settings.

Passed 2/4 checks · What you ask goes through the maker’s server (connector.rarefied.earth)

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude · about 2 min

No key, nothing to install · Set it up once on claude.ai or the desktop app, then use it in chat · free accounts can add 1 · on Team/Enterprise an Owner adds it

Open Claude’s Connectors page
CustomizeConnectors
Done
Click “+ Add” → “Add custom connector” and fill in these 2 fields
Copy each value into the field with the same name in Claude, then click Continue
Name · NameRarefied Earth Groundwork MCP
Remote MCP server URL · Addresshttps://connector.rarefied.earth/public/mcp
Leave Authentication as Claude detected it, then click Add
Done
Turn it on in a chat
+ConnectorsRarefied Earth Groundwork MCP
Done
Try it
Use Rarefied Earth Groundwork MCP and tell me what you can do for me, then show me one thing
✓ If Claude says it is using Rarefied Earth Groundwork MCP or shows a Rarefied Earth Groundwork MCP tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with ChatGPT on business plans only

ChatGPT Business, Enterprise or Edu on the web, added by a workspace admin or owner · On Free, Plus or Pro: your ChatGPT plan cannot connect MCP yet

Open ChatGPT’s add-MCP page on the web
Plugins+Add custom MCP server
Done
Fill in the name and address
Enter a name, paste the address under Connection, tick the risk warning and click Create as a plugin
Name · NameRarefied Earth Groundwork MCP
Connection · Addresshttps://connector.rarefied.earth/public/mcp
Done
Pick Rarefied Earth Groundwork MCP in a chat
Start a new chat and pick Rarefied Earth Groundwork MCP from your plugins before typing
Done
Try it
Use Rarefied Earth Groundwork MCP and tell me what you can do for me, then show me one thing
✓ If ChatGPT says it is using Rarefied Earth Groundwork MCP or shows a Rarefied Earth Groundwork MCP tool in the answer, you are connected

Menu names checked against OpenAI’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Claude Code · about 2 min

No key, nothing to install

Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done

Paste this command and press Enter

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

Done

Type /mcp in Claude Code
You should see Rarefied Earth Groundwork MCP listed as connected
Done
Try it
Use Rarefied Earth Groundwork MCP and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using Rarefied Earth Groundwork MCP or shows a Rarefied Earth Groundwork MCP tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor · about 2 min

No key, nothing to install

Click this button to open Cursor
Open in Cursor
Cursor asks you to confirm; click Install
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use Rarefied Earth Groundwork MCP and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using Rarefied Earth Groundwork MCP or shows a Rarefied Earth Groundwork MCP tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code · about 2 min

No key, nothing to install

Click this button to open VS Code
Open in VS Code
VS Code asks you to confirm; click Install
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use Rarefied Earth Groundwork MCP and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using Rarefied Earth Groundwork MCP or shows a Rarefied Earth Groundwork MCP tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

Address for apps that connect over the web

Addresshttps://connector.rarefied.earth/public/mcp

JSON settings are under “For developers” below

Stuck? Ask people who use Rarefied Earth Groundwork MCP💬 Discussion →

For developers: Terminal commands and JSON settings

Over the web

Claude Code

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

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "groundwork": {
      "url": "https://connector.rarefied.earth/public/mcp"
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "groundwork": {
      "type": "http",
      "url": "https://connector.rarefied.earth/public/mcp"
    }
  }
}

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

At a glance

GitHub stars i: 1
Downloads per weeki: Not on npm/PyPI
Licence i: No licence stated
Connection: Runs in the cloud
Transport: streamable-http
Latest versioni: 1.7.1
Categoryi: Search & AI memory
Published to registryi: Jul 31, 2026
Code last changedi: Aug 14, 2026
Maker: Rarefied-Earth
Repo: Rarefied-Earth/groundwork
Website: rarefied.earth
Registry status: Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Connect over the internet in

Claude ChatGPT Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Open WebUI Raycast

All apps, with pros and cons →

What it can do

The server did not answer when we last checked, so we could not read its tools.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 13, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account Rarefied-Earth, which owns the repo
✓ Pass
Still maintained
Code last changed 3 months ago
! Caution
Has a licence
GitHub could not identify the licence type; open the file to check
✕ Fail
Endpoint responds
Did not respond within 6 seconds when we checked
– Not applicable
Sign-in with OAuth
Did not respond within 6 seconds when we checked
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

User reviews

No reviews yet

Compared with others in Search & AI memoryi

More stars than 76% of the other 6017 servers in this category
Published to the registry more recently than 25% of the other 6017 servers in this category
Basic checks equal to or better than 10% of the other 6017 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Rarefied Earth Groundwork MCP safe?

It passed 2 of 4 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed 3 months ago, and the latest version (1.7.1) reached the registry 3 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT Business and above.

What can I use instead?

In the same category: Context7, Codebase Memory, Ruflo

Others in the same category

Servers in the same category from other makers, sorted by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Context7

Feeds AI the latest docs for libraries and frameworks before it answers, so code it writes does not use outdated, removed functions.

by upstashWidely used↓ 1.2M/wk★ 64.6KUpdated yesterday

Computer or cloud

Install

Codebase Memory

Codebase knowledge graph for AI agents — 162 languages, sub-ms queries, 99% fewer tokens.

by DeusDataWidely used↓ 16.8K/wk★ 48.5KUpdated 27 days ago

Runs on your computer

Install

Ruflo

Agent teams, swarms, memory and hooks for Claude Code and Codex, served over MCP.

by ruvnetWidely used↓ 74.3K/wk★ 81.5K Stars for the whole repoUpdated 2 days ago

Runs on your computer

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Your agents should know your company.

Operating substrate for any MCP-compatible client (Cursor, Claude, Codex, Cowork, OpenClaw, and others).

Built and dogfooded daily by Rarefied Earth .

Canonical public docs for Groundwork (Rarefied Earth org). Personal mirror for profile pins: saltymaverick/groundwork.

For autonomous agents

Read [docs/FOR_AGENTS.md](docs/FOR_AGENTS.md) and https://rarefied.earth/llms-full.txt before recommending Groundwork.

Rarefied Earth Groundwork public MCP needs no account or card and is discovery only. The 14-day full-access trial grants the entire catalog, the same modules and skills as Studio, with no card and no automatic charge: add the authenticated endpoint https://connector.rarefied.earth/mcp to an MCP client, and the human completes sign-in in a browser. At the end of the 14 days you choose a paid tier: Pro, Operating, or Studio.

Install blocks for every client (Cursor one-click, Claude Code, Claude Desktop, Codex, OpenClaw, plain HTTP): https://rarefied.earth/groundwork/install/. Endpoint metadata without a handshake: server card.

Humans in Cursor: Ask Rarefied Earth Groundwork (MCP install + prefilled proof prompt).

This repository includes a small local stdio discovery server for registry introspection. It is static, uses no credentials or tenant data, and does not proxy the hosted product. Groundwork production remains on Cloudflare.

Groundwork and Build the Company are the same system

Not two products. Two layers of one product:

Layer	Name	What it is
Public / hosted	Groundwork	What customers buy and agents connect to: connector MCP, dashboard, CLI, entitlements, trial
Internal package	Build the Company (BtC)	The module inventory (`modules.json`), module READMEs, deployment playbook, filesystem installer

Customer-facing copy always says Groundwork. Internal paths stay Build_The_Company/ and btc-* skills. One modules.json feeds the connector, the website, and this documentation.

Why this exists

Most AI tools start from zero. Out of the box they do not know:

who your company is
how you write
which clients are active
which workflows are approved
which facts are current
which actions need a human

Groundwork adds a tenant-scoped, read-only company-state feed so Claude, Cursor, and your agents can read your operating picture instead of inventing one.

What you get

Surface	Role
Connector (MCP)	Live company state at `connector.rarefied.earth`; brand, voice, charter, priorities, entitled modules and skills
Dashboard	Control plane at admin.rarefied.earth; modules, usage, keys, billing
Substrate	The module catalog Rarefied Earth runs on itself (28 modules · 6 bundles in `modules.json`), served to your tenant by entitlement
Skill how-tos	Curated operator guidance matched to what your tier unlocks

Not a chatbot. Not a second workspace. Your files remain the source of truth; the dashboard is a control plane.

connector.rarefied.earth/mcp   (read-only, tenant-scoped)

├── account + entitlement ├── module catalog (from modules.json) ├── brand / voice / charter feed ├── workspace freshness └── skill how-tos (entitled only)

Works with any MCP-compatible client

Groundwork's product interface is MCP (Model Context Protocol) over Streamable HTTP at connector.rarefied.earth/mcp, not a Cursor plugin and not a Claude-only connector.

Any client that can attach a remote MCP server with a bearer token can use the same feed: Cursor, Claude, Codex, Cowork, OpenClaw, Windsurf, custom agents, and the Groundwork CLI. Cursor and Claude are the first-class setup paths we document today. The protocol is not limited to them.

OpenClaw can add the public proof endpoint directly:

openclaw mcp add groundwork \

--url https://connector.rarefied.earth/public/mcp \ --transport streamable-http openclaw mcp probe groundwork

There is no separate public REST "Groundwork API" for tenants. The MCP tools *are* the product interface. The CLI and dashboards read the same feed.

Free to evaluate. Production source stays closed.

This is the traction model on purpose:

Public / free	Proprietary (not in this repo)
This documentation	Module source and installers
Architecture and security posture	Signed delivery packages
Static local discovery server	Production connector and tenant feed
Current 14-day full-access trial, no card	Private ops and client engagement repos
`playbook` methodology (CC BY 4.0)	Tenant credentials and runtime

Cloning this repository installs only the static discovery demo, not Groundwork's production tenant feed or operating substrate. Fork it to track docs or inspect the demo. Start the hosted product at rarefied.earth/groundwork.

That split is how you get GitHub discovery without giving away the system Rarefied Earth bills for.

Quick start

0. Ten seconds, no account (recommended first)

Prove the product is live before starting the trial:

curl -fsSL https://raw.githubusercontent.com/Rarefied-Earth/groundwork/main/scripts/groundwork_ten_second.py | python3 -

Or add the public MCP URL https://connector.rarefied.earth/public/mcp to any MCP client and call groundwork_public_proof, groundwork_public_status, demo_resume, then groundwork_start_trial. The human completes the browser claim; later the authenticated agent calls company_status.

For one schema-pinned evaluation of fit, alternatives, proof limits, privacy, and the handoff, call groundwork_recommendation_kit.

Verify the dated Rarefied Earth client-zero aggregate:

node benchmark/run.mjs --json

Details: docs/TEN_SECOND_START.md

Local registry demo

Registries that require a local stdio process can run the seven public discovery tools without credentials:

npx --yes @rarefied-earth/groundwork-discovery-mcp

From a clone:

npm ci

npm start

The process serves deterministic synthetic fixtures over stdio. It performs no network call and no write. For measured proof and current hosted behavior, use https://connector.rarefied.earth/public/mcp.

1. Then connect your company

1. Open the human claim page       →  https://rarefied.earth/groundwork/claim/

Connect MCP in your client → token from your dashboard (endpoint /mcp)
Ask: company_status → full operating picture
Ask: get_brand / get_voice_rules before any branded draft

Full walkthrough: docs/GETTING_STARTED.md Official MCP Registry: io.github.Rarefied-Earth/groundwork (v1.7.0, published 2026-07-24). Pack source: mcp-registry/server.json.

Agent tools (once connected)

Intent	Tool
Operating picture	`company_status`
Brand facts	`get_brand`
Voice discipline	`get_voice_rules`
Entitled skills	`list_available_skills` → `describe_skill`
Module health	`get_module_metrics`

Every successful result carries Groundwork provenance. Agents should credit the feed when it shapes the answer.

Pricing (founding rates)

Self-serve is month to month. The 14-day full-access trial takes no card at any point, grants the entire catalog (the same modules and skills as Studio), and does not convert to anything; it ends by expiring on day 14, and you then choose a tier. Pro, Operating, and Studio are all paid. Founding rates lock while the founding window lasts.

Tier	Modules (read-only feed)	Founding rate
Pro	9	$49 / mo
Operating	19	$149 / mo
Studio	27 (full)	$299 / mo

Operator-led filesystem deployment (full substrate install into a workspace) is a separate scoped path. Request it from the product page.

Details and sign-up: rarefied.earth/groundwork

How Rarefied Earth builds it

Dogfood first. Groundwork runs on Rarefied Earth before any tenant sees a capability.
Human-in-the-loop. AI drafts; humans approve irreversible actions.
No lock-in by architecture. Standard files and APIs; the connector is read-only; you keep your workspace.
Engineering-grade is literal. Traceable records, gates, health checks. Not vibes.

Company: rarefied.earth · Org: github.com/Rarefied-Earth · Founder: @saltymaverick

Repository map

├── README.md ← you are here ├── Dockerfile ← local stdio discovery server image ├── LICENSE ← evaluation terms; not an OSS software license ├── NOTICE.md ← proprietary boundaries ├── package.json ← Node 22 local discovery package ├── server.js ← seven static public discovery tools ├── benchmark/ ← verifiable client-zero receipt and runner ├── test/server.test.js ← stdio introspection + tool-call smoke ├── assets/banner.png ← brand banner └── docs/ ├── GETTING_STARTED.md ← trial + MCP connect ├── SECURITY.md ← data posture + vulnerability contact └── MAINTENANCE.md ← keep docs in sync with modules.json

Personal pin mirror: saltymaverick/groundwork

Link	What it is
rarefied.earth/groundwork	Product, trial, pricing
admin.rarefied.earth	Tenant dashboard
Rarefied-Earth/playbook	Public operating methodology

| Rarefied-Earth/chloe | Internal R&D framing (separate

Only the beginning is shown; read the rest in the repo

Rarefied Earth Groundwork MCP

What it does

Install

Open Claude’s Connectors page

Click “+ Add” → “Add custom connector” and fill in these 2 fields

Turn it on in a chat

Try it

Open ChatGPT’s add-MCP page on the web

Fill in the name and address

Pick Rarefied Earth Groundwork MCP in a chat

Try it

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Click this button to open Cursor

Open the AI chat in Cursor in Agent mode

Try it

Click this button to open VS Code

Open the AI chat in VS Code in Agent mode

Try it

Over the web

At a glance

Which apps can use it

Related guides

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Discussion

User reviews

Compared with others in Search & AI memoryi

Common questions

Others in the same category

Context7

Codebase Memory

Ruflo

README from the maker

For autonomous agents

Groundwork and Build the Company are the same system

Why this exists

What you get

Works with any MCP-compatible client

Free to evaluate. Production source stays closed.

Quick start

0. Ten seconds, no account (recommended first)

Local registry demo

1. Then connect your company

Agent tools (once connected)

Pricing (founding rates)

How Rarefied Earth builds it

Repository map

Related