MCP server

SmartCut exposes its optimisation API as a remote Model Context Protocol (MCP) server. An LLM client can submit cutting jobs, fetch layouts and generate exports directly, in natural language. That covers Claude Desktop, Claude.ai, Cursor, and anything you build yourself.

It mirrors the REST v3 API: same engine, same authentication, same usage quota. Anything you can do over REST you can do over MCP.

Endpoint

POST https://api.smartcut.dev/mcp

The transport is Streamable HTTP. Nothing needs installing, because the server is hosted and remote. You point your client at the URL above and authenticate with your API key.

Credentials

You authenticate with your existing SmartCut API key. There is no separate MCP token to create.

Sign in at smartcut.dev/account (an active API subscription is required).
Copy your API key from the account page.
Give it to your MCP client as an Authorization header (see below). The value is the raw key, with no Bearer prefix.

Connect a client

Most LLM clients connect to a remote MCP server through the mcp-remote bridge. Add SmartCut to your client’s MCP config (e.g. Claude Desktop’s claude_desktop_config.json):

{
  "mcpServers": {
    "smartcut": {
      "command": "npx",
      "args": [
        "-y", "mcp-remote",
        "https://api.smartcut.dev/mcp",
        "--header", "Authorization:${SMARTCUT_API_KEY}"
      ],
      "env": {
        "SMARTCUT_API_KEY": "your-api-key"
      }
    }
  }
}

Passing the key via the env block, rather than inline in args, keeps it out of the args list and works around clients that strip spaces from arguments. Note there is no space after Authorization:.

If your client supports remote/HTTP MCP servers natively (a URL plus custom headers), configure it directly instead:

URL: https://api.smartcut.dev/mcp
Header: Authorization: <your-api-key>

Restart the client and the SmartCut tools below become available.

Tools

Each tool maps 1:1 to a v3 API endpoint:

Tool	Does
`calculate`	Submit a job and (by default) wait in-call for the finished layout.
`validate`	Pre-flight your inputs (will the parts fit, why not). No job is run and nothing is charged.
`status`	Check a job: queued / active / completed / failed / cancelled.
`result`	Fetch a finished layout by job id.
`cancel`	Cancel a queued or running job you own.
`usage`	Your plan usage: used / limit / remaining.
`export`	Generate a `pdf`, `csv`, `ptx`, `dxf`, `svg` or `mayer` file and return a download URL.
`labels`	Generate a printable labels PDF and return a download URL.
`list_cut_types`	The valid `stockType → cutType → cutPreference` combinations, so the model can build a correct request without leaving the chat.

How `calculate` runs

Optimisation is asynchronous, but the calculate tool bridges that to a single call:

It submits the job, then waits in-call (default up to ~25 s, override with waitMs).
If the job finishes in time, it returns the full layout there and then.
If it doesn’t, it returns { jobId, status: "running" }. The result still arrives at any webhook you supplied, and the model can fetch it later with the result tool.

This keeps normal jobs to one round-trip while large or batch jobs stay fully async.

Billing & limits

The MCP and the REST API share one quota. A calculate call counts against your plan exactly like a POST /v3/calculate, and validate / status / usage are free. Rate limits are the same per-minute budget as the REST API. Result fetching is scoped to your own jobs.