KASSA.AT MCP by usefulapi MCP Server

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answering

KASSA.AT MCP by usefulapi is answering right now. Last checked 13 min ago. It exposes 12 tools. Last commit 11 Nov 2026.

Read and update articles, customers and stock in KASSA.AT.

Uptime history 29 hours of history

29 hours agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

286 ms

Response time

average over 24h

Stars

last commit 11 Nov 2026

What changed 4

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 10 November 2026. No other catalogue keeps this.

11 Nov a tool changed version

10 Nov a tool changed version3 times that day

and 2 more, back to 10 November 2026

Nothing serious here today

Today is the operative word: we check KASSA.AT MCP by usefulapi every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 13 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add kassa-at --transport http https://kassa-at.usefulapi.io/mcp

Settings → Connectors → Add custom connector, then paste this address

https://kassa-at.usefulapi.io/mcp

~/.codex/config.toml

[mcp_servers.kassa-at]
url = "https://kassa-at.usefulapi.io/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "kassa-at": {
      "url": "https://kassa-at.usefulapi.io/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "kassa-at": {
      "type": "http",
      "url": "https://kassa-at.usefulapi.io/mcp"
    }
  }
}

Available tools 12

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

kassa

kassa_create_article

Create a new article (product or service) in the cash register. The VAT percent must be 0, 10, 13 or 20. Creates a record; it does not delete anything. POST /api/v1/articles.

kassa_create_customer

Create a customer record. Give at least one field. Creates a record; it does not delete anything. POST /api/v1/customers.

kassa_find_customer_by_number

Find one customer by the customer number you assigned. GET /api/v1/customers/customer_number.

kassa_get_inventory_stock

Get the current stock quantity of one inventory record. GET /api/v1/warehouses/{id}/inventories/{inventory_id}/stock.

kassa_list_article_categories

List the product categories an article belongs to (id, name, colour). GET /api/v1/articles/{id}/product_categories.

kassa_list_articles

List the articles (products and services) of the cash register, with price, VAT percent, unit and bar codes. Full-text search with query, or filter by article number, bar code or your own article id. GET /api/v1/articles.

kassa_list_customers

List customers, with name, customer number, address, phone and email. Full-text search with query, or filter by a field. GET /api/v1/customers.

kassa_list_inventories

List the inventory records of a warehouse for given articles, optionally with the current stock. Rate limited by KASSA.AT. Give article_numbers (up to 1000), article_number or article. POST /api/v1/warehouses/{id}/inventories/search (a read).

kassa_list_warehouses

List the warehouses (stock locations) of the company, with id and description. GET /api/v1/warehouses.

kassa_record_stock_movement

Add a stock movement to one inventory: a positive quantity adds stock, a negative one removes it. It changes the stock level; it does not set an absolute level. POST /api/v1/warehouses/{id}/inventories/{inventory_id}/movements.

kassa_update_article

Change one or more fields of an article. Only the fields you pass change; the rest stay as they are. PATCH /api/v1/articles/{id}.

kassa_update_customer

Change one or more fields of a customer. Only the fields you pass change. This tool does not delete customers. PATCH /api/v1/customers/{id}.

Endpoints

URL	Transport	State	Latency	Checked
https://kassa-at.usefulapi.io/mcp	streamable-http	answering	286 ms	13 min ago

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KASSA.AT MCP by usefulapi — questions

Answers built from our own checks of this server.

What can KASSA.AT MCP by usefulapi do?

It exposes 12 tools, read directly from the server on our last check. Among them: kassa_create_article, kassa_create_customer, kassa_find_customer_by_number, kassa_get_inventory_stock, kassa_list_article_categories, kassa_list_articles and 6 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 →

Is KASSA.AT MCP by usefulapi working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 286 ms. The bar chart above shows every period we have measured.

How do I connect KASSA.AT MCP by usefulapi?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does KASSA.AT MCP by usefulapi need an API key?

No. KASSA.AT MCP by usefulapi completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 12 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is KASSA.AT MCP by usefulapi?

It answers our handshake in 286 ms on average, which is faster than 47% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is KASSA.AT MCP by usefulapi open source?

The code is open source: it is published under the MIT licence, written in JavaScript, 1 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at kassa-at.usefulapi.io, which runs on its operator's own terms.