CustomCat MCP by usefulapi MCP Server

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answering

CustomCat MCP by usefulapi is answering right now. Last checked 5 min ago. It exposes 12 tools. Last commit 25 Oct 2026.

Browse the CustomCat catalog, your products and designs; check shipping; create and cancel orders.

Uptime history 25 hours of history

25 hours agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

279 ms

Response time

average over 24h

Stars

last commit 25 Oct 2026

What changed 4

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 25 October 2026. No other catalogue keeps this.

25 Oct a tool changed version4 times that day

and 3 more, back to 25 October 2026

Nothing serious here today

Today is the operative word: we check CustomCat 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 5 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

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

https://customcat.usefulapi.io/mcp

~/.codex/config.toml

[mcp_servers.customcat]
url = "https://customcat.usefulapi.io/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "customcat": {
      "url": "https://customcat.usefulapi.io/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "customcat": {
      "type": "http",
      "url": "https://customcat.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.

customcat

customcat_cancel_order

WRITE: cancel (delete) an order by YOUR order id. CustomCat can only cancel an order that has not gone into production; one already printed or shipped is refused. Needs the Write API key. Confirm with the user first. DELETE /order/{order_id}.

customcat_create_order

WRITE: place an order for CustomCat to print and ship. This CHARGES the payment method on file in your CustomCat account (product cost + shipping; a front+back print adds $5 per line item) unless sandbox=true, which only validates the order. A real order (sandbox=false) also needs confirm=true, set only after the user confirmed it. The order id is yours and must be new (a duplicate is rejected). Needs the Write API key. Check stock with customcat_get_catalog_sku and the method name with customcat_list_shipping_methods first, and confirm the details with the user before calling. POST /order/{order_id}.

customcat_get_catalog_product

One catalog product by numeric id with its colors, sizes and SKUs. GET /catalog/{catalog_product_id}.

customcat_get_catalog_sku

One catalog SKU with its price and stock status. Use it before ordering: a SKU that is out of stock, discontinued or invalid makes the order fail. GET /catalog/sku/{catalog_sku_id}.

customcat_get_order_status

Status of an order by YOUR order id: order status (Pending, Verified, Shipped), per-item production status, shipments with tracking ids, totals and the ship-to address. Set sandbox=true to look up a sandbox test order. GET /order/status/{order_id}.

customcat_get_product

One of your CustomCat products by id (e.g. 22-2580581): variants, SKUs, cost, price, options, designs. GET /product/{product_id}.

customcat_get_shipping_cost

Calculate the shipping cost of one shipping method for a destination and a list of catalog SKUs with quantities. Read-only quote: it places nothing. POST /shipping/{shipping_id} (shipping_id from customcat_list_shipping_methods).

customcat_list_catalog

Browse the full CustomCat catalog of printable blank products (the items you can order with your own artwork). Filter by category and subcategory from customcat_list_catalog_categories. The reply carries the total in `total`. GET /catalog.

customcat_list_catalog_categories

The CustomCat catalog categories (Digisoft, Sublimation) and their subcategories (e.g. T-Shirts, Sweatshirts, Bags), to narrow customcat_list_catalog. GET /catalogcategory.

customcat_list_designs

List the designs uploaded to your CustomCat account: id, name, tags, image URLs, default product and last-updated time. GET /design.

customcat_list_products

List the products you set up in CustomCat (a design on one or more catalog items) with variants, SKUs, cost, price, stock flag and design images. Use the variant SKUs when placing an order for these products. GET /product.

customcat_list_shipping_methods

The shipping methods CustomCat offers for a destination country (ids and names). The method name is required when placing an order. GET /shipping.

Endpoints

URL	Transport	State	Latency	Checked
https://customcat.usefulapi.io/mcp	streamable-http	answering	218 ms	5 min ago

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CustomCat MCP by usefulapi — questions

Answers built from our own checks of this server.

What can CustomCat MCP by usefulapi do?

It exposes 12 tools, read directly from the server on our last check. Among them: customcat_cancel_order, customcat_create_order, customcat_get_catalog_product, customcat_get_catalog_sku, customcat_get_order_status, customcat_get_product 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 CustomCat 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 279 ms. The bar chart above shows every period we have measured.

How do I connect CustomCat 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 CustomCat MCP by usefulapi need an API key?

No. CustomCat 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 CustomCat MCP by usefulapi?

It answers our handshake in 279 ms on average, which is faster than 60% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is CustomCat MCP by usefulapi open source?

The code is open source: it is published under the MIT licence, written in JavaScript, 0 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at customcat.usefulapi.io, which runs on its operator's own terms.