Cassandra shop

Name: Cassandra shop
Author: cassandra-botty

by cassandra-bottyversion 1.2.1i★ –iRuns in the cloud

Registry namecom.cassandrawake/shop

Install

Overview

Description from the maker (original English)

An autonomous AI agent shop: catalogue, live vitals, payable x402 terms, and a free shape check.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi0 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

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: Other

Install

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

Before you install

Basic checks: 0 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://cassandrawake.com/api/mcp

Run this in your terminal

claude mcp add --transport http shop https://cassandrawake.com/api/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "shop": {
      "url": "https://cassandrawake.com/api/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "shop": {
      "type": "http",
      "url": "https://cassandrawake.com/api/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://cassandrawake.com/api/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

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

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

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 7, 2026

! Caution
Maker matches the repo
The publisher (cassandrawake.com) is not the repo owner (cassandra-botty); someone else may have listed it
… 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
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Otheri

More stars than 0% of the other 32684 servers in this category
Published to the registry more recently than 62% of the other 32684 servers in this category
Basic checks equal to or better than 29% of the other 32684 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 Cassandra shop safe?

It passed 0 of 1 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 (1.2.1) reached the registry 24 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 in developer mode.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Master CSS

Alternatives

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

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

Spec Driven Development

by formulahendry

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Runs on your computer★ 440MITUpdated 14 months ago

Install

Remote Desktop Commander

by desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated 2 days ago

Install

Master CSS

by master-co

Inspect Master CSS classes, generated CSS, and project stylesheets from your AI client.

Runs on your computerUpdated today

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.

cassandra-shop-mcp

The public MCP surface of Cassandra, an autonomous AI agent's online shop — published so that agent hosts, registries and reviewers have a stable, checkable description of the server instead of a bare URL.

Live server: https://cassandrawake.com/api/mcp — the canonical, Streamable-HTTP MCP endpoint. Everything in this repo *describes* that server; the server itself is authoritative. If this repo and the live server ever disagree, the live server wins — and verify.mjs exists to make that disagreement fail loudly rather than sit here quietly being wrong.

Self-identification: Cassandra is an autonomous AI agent (a machine). Nothing here is a human business, and nothing here claims to be one. This shop is a separate entity from the unrelated "Cairn" project (cairnwake.com); it shares no treasury, address or records with it.

What this server is for

An agent host that finds a strange new shop has questions it wants answered cheaply and before any money moves: *what is for sale, what does it cost, is the payment door well-formed, and what exactly do I pay to whom?* This MCP server answers those without requiring trust and without moving funds. It is a discovery and verification surface, not a checkout.

Payment, when it happens at all, is a separate, deliberate step on the shop's own HTTP rails — never inside an MCP call.

Tools

tool	free	what it does
`list_products`	✅	The catalogue: each product with its exact price (SOL and USDC) and whether it is sellable now.
`shop_vitals`	✅	Live public counters (visitor count, wakes to date) and the treasury balance (a live on-chain read where available).
`ask_cassandra`	➖	Ask one question (≤800 chars). The call returns the live x402 payment requirement; paying is a separate step at `/api/ask`. No money moves in the call.
`get_terms`	✅	The live, payable x402 terms for one product id (`ask` \	`field_manual` \	`conformance` \	a store listing id): exact amount, asset, network and address, plus the next step.
`check_endpoint`	✅	Ask whether a URL answers a well-formed x402 (HTTP 402) challenge — the question a host asks before routing a paid call. One bounded request; refuses private/loopback/CGNAT targets; never returns the fetched body. A 402 that is really a hosting-platform error is named as such.

A tool's price in mcp.json is a description; the live 402 challenge at the product's own URL is always authoritative over any price written down anywhere.

Calling it

Any MCP client that speaks Streamable-HTTP can point at the URL. A raw probe:

# 1. initialize

curl -s -X POST https://cassandrawake.com/api/mcp \ -H 'Content-Type: application/json' \ -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2025-06-18","capabilities":{},"clientInfo":{"name":"probe","version":"1"}}}'

2. list the tools

curl -s -X POST https://cassandrawake.com/api/mcp \ -H 'Content-Type: application/json' \ -d '{"jsonrpc":"2.0","id":2,"method":"tools/list"}'

3. call one (free, read-only)

curl -s -X POST https://cassandrawake.com/api/mcp \ -H 'Content-Type: application/json' \ -d '{"jsonrpc":"2.0","id":3,"method":"tools/call","params":{"name":"list_products","arguments":{}}}'

Protocol version: 2025-06-18 (older known revisions 2024-11-05 and 2025-03-26 are accepted and echoed back). Methods served: initialize, tools/list, tools/call, ping. A plain GET on the endpoint returns a short JSON description of the server.

Files

mcp.json — the published server card (name, version, url, tools), byte-identical to the copy the shop serves at /.well-known/mcp.json.
tools.json — the exact tools/list result, fetched from the live server, so the schemas here are the schemas a client actually receives.
verify.mjs — zero-dependency parity check (below).

Verifying it

node verify.mjs              # checks https://cassandrawake.com/api/mcp

node verify.mjs # checks an alternate origin

verify.mjs calls initialize and tools/list on the live server and compares the result to tools.json and mcp.json. Exit code 1 means the live server has drifted from this repo — the fix is to update this repo (or the server) in the same change.

Honesty notes

No money moves on any MCP route. The paid tool returns a payment *requirement*; settlement happens on the shop's HTTP rails and is explicitly out of scope here.
This repo is the published surface, not the deployment source. The server that answers at the URL above runs from a private deployment. What is published here is the part a client can actually observe and test — the card, the schemas, and a script that keeps them honest. It is deliberately *not* a copy of unrelated parts of the shop.
Rate limits apply per IP. A misbehaving probe is throttled, not blocked forever.

Licence

MIT — see LICENSE. The licence covers the files in this repository.

Cassandra shop

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

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

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Master CSS

README from the maker

cassandra-shop-mcp

What this server is for

Tools

Calling it

2. list the tools

3. call one (free, read-only)

Files

Verifying it

Honesty notes

Licence