Knowledge Commons

Name: Knowledge Commons
Author: metraipolis.com

by metraipolis.comversion 0.1.0i★ –iRuns in the cloud

Registry namecom.metraipolis/knowledge-commons

How to install

Overview

Description from the maker (original English)

Knowledge commons for AI agents: cited, licensed, queryable claims over MCP.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Search & AI memory

Install

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

Passed 2/3 checks · What you ask goes through the maker’s server (metraipolis.com)

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

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 · NameKnowledge Commons
Remote MCP server URL · Addresshttps://metraipolis.com/mcp
Leave Authentication as Claude detected it, then click Add
Done
Turn it on in a chat
+ConnectorsKnowledge Commons
Done
Try it
Use Knowledge Commons and tell me what you can do for me, then show me one thing
✓ If Claude says it is using Knowledge Commons or shows a Knowledge Commons 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 · NameKnowledge Commons
Connection · Addresshttps://metraipolis.com/mcp
Done
Pick Knowledge Commons in a chat
Start a new chat and pick Knowledge Commons from your plugins before typing
Done
Try it
Use Knowledge Commons and tell me what you can do for me, then show me one thing
✓ If ChatGPT says it is using Knowledge Commons or shows a Knowledge Commons 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 knowledge-commons https://metraipolis.com/mcp

Done

Type /mcp in Claude Code
You should see Knowledge Commons listed as connected
Done
Try it
Use Knowledge Commons and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using Knowledge Commons or shows a Knowledge Commons 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 Knowledge Commons and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using Knowledge Commons or shows a Knowledge Commons 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 Knowledge Commons and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using Knowledge Commons or shows a Knowledge Commons 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://metraipolis.com/mcp

JSON settings are under “For developers” below

Stuck? Ask people who use Knowledge Commons💬 Discussion →

For developers: Terminal commands and JSON settings

Over the web

Claude Code

claude mcp add --transport http knowledge-commons https://metraipolis.com/mcp

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "knowledge-commons": {
      "url": "https://metraipolis.com/mcp"
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "knowledge-commons": {
      "type": "http",
      "url": "https://metraipolis.com/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: –
Downloads per weeki: Not on npm/PyPI
Verified domain: ✓ metraipolis.com
Licence i: No licence stated
Connection: Runs in the cloud
Transport: streamable-http
Latest versioni: 0.1.0
Categoryi: Search & AI memory
Published to registryi: Oct 6, 2026
Code last changedi: –
Maker: metraipolis.com
Repo: –
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

Tool names and descriptions exactly as the server reported them on Nov 8, 2026. The maker wrote them, not us; we show them as plain text.

search_archive
Full-text, relevance-ranked search over about 1.5 million open documents: Wikipedia extracts, arXiv and Europe PMC abstracts, OpenAlex records, CISA KEV/CVE entries, IETF/W3C source cards. Each hit has an id, snippet, source name, original URL, license, date and SHA-256 fingerpri
read_document
Return the stored text of one archive document (often an abstract or extract, not the full original publication) with title, source, original URL, license, date, SHA-256 fingerprint and the citations other agents recorded. When to use: Step 2 of search → read → cite: after search
cite_source
Return a citation for one archive document (dc_…) or one HTTP RFC clause (rfc…): citation line, BibTeX, original URL, license, SHA-256 or official RFC text, and a stable public web page (no JavaScript) that anyone can open to check it. Nothing is written or recorded. When to use:
search_clauses
Search HTTP requirements, caching rules, headers and status-code semantics in RFCs 9110–9114 (HTTP semantics, caching, HTTP/1.1, HTTP/2, HTTP/3) by concept, words, RFC section or stable id. Each result carries quote_official: the exact official RFC text, plus conditions, exceptio
get_clause
Return one clause card by stable id: full official paragraph (quote_official), conditions, exceptions, definitions, linked sentences, related ids, RFC status and errata. When to use: Use after search_clauses when you need the whole paragraph or its exceptions before answering. Ne
get_rfc_status
Return an RFC's status, obsoletes/obsoleted-by and updates/updated-by links, errata (verified, reported, held, rejected) and active IETF drafts when known. When to use: Use before relying on an RFC, to check it is current and whether errata change the text you cite. Notes: No acc

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 12, 2026

! Caution
Maker matches the repo
The registry lists no source repo, so we cannot match the publisher (metraipolis.com) to the code
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
✓ Pass
Endpoint responds
Responded in 694 ms (HTTP 200)
– Not applicable
Sign-in with OAuth
No sign-in needed
✓ Pass
No hidden instructions in tool descriptions
Read 6 tool descriptions and found no hidden instructions to the AI

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 0% of the other 5958 servers in this category
Published to the registry more recently than 52% of the other 5958 servers in this category
Basic checks equal to or better than 47% of the other 5958 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 Knowledge Commons safe?

It passed 2 of 3 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 –, and the latest version (0.1.0) reached the registry 36 days 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: Ruflo, Context7, Metabase

Alternatives

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

Ruflo

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

by ruvnetWidely used↓ 74.3K/wk★ 81.5KUpdated today

Runs on your computer

Install

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 2 days ago

Computer or cloud

Install

Metabase

Lets AI clients search, explore, query, and visualize data in a Metabase instance.

by metabaseWidely used★ 50.3KUpdated 6 months ago

Runs in the cloud

Install

README from the maker

No README found in the repo

Knowledge Commons

Overview

What you can do with it

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 Knowledge Commons 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

Alternatives

Ruflo

Context7

Metabase

README from the maker