The Check, inside your tools

What it does

Nine measures, both numbers, no opinion

Give it a draft and it measures the draft the way the Wordprint measured your published writing, then puts the two side by side: typical sentence length, how much the lengths vary, the share of sentences that land in five words or fewer, phrases from the category phrasebook, numbers and named specifics, em dashes, exclamation marks, contractions, direct questions, and who is speaking, I, we or you.

Each measure comes back as holds, off, or noisy. Off means outside a tolerance around the value your Wordprint recorded, and the tolerances are loose on purpose: a check that fires on every draft gets switched off. Noisy means the draft is under twenty-five sentences, where rhythm cannot be judged, so the number is shown and not counted. The verdict is holds, drifting or off the voice, and it is the same for the same draft on any day, because no model is consulted at any point.

It judges nothing. Which of the drifts matters is the ruling in your Wordprint, or yours. The Check only counts.

The Wordprint says what the voice is. The Check says whether this draft is in it.

The tools, in practice

Two lines of configuration

For Claude Desktop, put this in claude_desktop_config.json, with the path to the server file and your own token, then restart:

{
  "mcpServers": {
    "smarticulate": {
      "command": "node",
      "args": ["/path/to/server.mjs"],
      "env": { "SMARTICULATE_TOKEN": "d_..." }
    }
  }
}

Then tell it, in the project instructions alongside the prompt pack, to run check_draft on anything before presenting it and to revise whatever comes back as off. The pack says how to write; the Check says whether it did. The server file and the setup notes come with every Wordprint, on the document page under where the pack goes, and the file is here for anybody who wants to read it first.

ChatGPT, Copilot and Gemini do not yet take an MCP server in the same way. For those, the API is the route: a short action or a script that posts the draft and reads the verdict. The page works for all of them in the meantime, and the paste is the same paste you would have made anyway.

What it costs

Free for ninety days, then a subscription

Every Wordprint carries the Check free for its first ninety days, dated from the day the document was delivered, which is the period in which the pack is being installed and the Check is doing its most useful work. After that it is £39 a month or £390 a year, chosen on the Check page itself, paid to Stripe and cancelled from the receipt Stripe sends, unlimited within the daily guard. There is nothing to sign up for on this site, because the Check belongs to a document rather than to an account, and the only way to it is through the document.

An organisation Wordprint records one corporate voice and several speaking roles, so its Check will hold a draft against the role it was written in as well as against the company: the chief executive's note to the chief executive's register, the support reply to the support desk's. One price for the whole organisation, £79 a month, however many people and tools write, because the thing being protected is the voice rather than the seat. That version follows the first organisation Wordprint; it is described here so nobody looks for it yet.

The Check also runs without anybody pasting. Once a month the pages the Wordprint was built from are read again, measured against the document by the same code, and one line arrives by email: how far the site has moved since the document and which habit moved it. Numbers only are kept, the email carries a link that stops it for that document, and it is the part of the subscription that works whether or not anybody remembers it exists.

A Soundalike does not carry it. A Soundalike compares businesses and records no single voice to check a draft against; the Check is the Wordprint's.

Write the rules down once. Then let the tools read them.

Start with the document

The Check needs a Wordprint to check against. The free test tells you whether you need one; a self-serve Wordprint is the cheapest way to get one, and it arrives with the Check switched on.

More guides: ChatGPT custom instructions for your brand voice, how to write brand voice guidelines, how to measure brand voice.