Claude + CTRON Loop

Use Claude on your spreadsheets, documents and reports

Connect your Anthropic API key and CTRON Loop runs its document and writing work on Claude, billed to your own Anthropic account. Claude is at its best on long documents, contracts and policies where the detail matters, while your dashboards stay calculated from every row of the file.
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Free plan. No card needed. Managed AI included if you have no key yet.

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Long documents, contracts and policy work where the detail matters.

Photo by Andrew Neel on Unsplash

What Claude is good for here

Long documents, contracts and policy work where the detail matters.

01

Contract and policy review

Obligations registers, risk flags and gap checks on long agreements and policies, with every point tied to its clause.

02

Long reports, read properly

Board packs, plans and procedures summarised for the reader who has five minutes, with the detail kept intact.

03

Commentary on your figures

Management accounts commentary and board report sections written around numbers calculated from your spreadsheet.

How it fits together

Claude writes. Your numbers are calculated.

  • Figures come from your file. Dashboards are calculated from every row by CTRON Loop's own engine, so totals match your spreadsheet whichever model you use.
  • Your key, your bill. Usage on your key is billed by Anthropic. CTRON Loop never marks it up.
  • One workflow, any model. Switch between providers or managed AI at any time. Your Loops keep working.

Connect it in a few steps

Set up your Anthropic key.

Good to know: A Claude Pro or Max subscription does not include API access. The Console is a separate account with its own prepaid credit, and cancelling one has no effect on the other.

  1. 1

    Sign in to the Anthropic Console.

  2. 2

    Open Plans and billing and add credit. The API draws down a prepaid balance rather than billing monthly.

  3. 3

    Open API keys, choose Create key, and name it CTRON Loop.

  4. 4

    Copy the key immediately. The Console shows it once and will not show it again.

  5. 5

    In CTRON Loop, open Settings, then Providers. Paste the key and choose Save and test.

Questions

Good to know.

Can I use my Claude subscription?

A Claude Pro or Max subscription does not include API access. The Console is a separate account with its own prepaid credit, and cancelling one has no effect on the other.

Do I need a Anthropic API key to use CTRON Loop?

No. Every plan includes managed AI within its limits, so you can start straight away. Connect your own key when you want direct control over models, usage and cost. Your workflows stay the same either way.

Who bills me for Claude usage?

With your own key, usage is billed by Anthropic to your account, never by CTRON Loop. Your CTRON Loop plan covers the product itself.

Is my spreadsheet sent to Claude?

Dashboard figures are calculated from your file by CTRON Loop's own engine. When you ask a question about a dashboard, only the calculated totals on screen are sent to the model, never the rows. Document tasks send the document text the task needs.

Claude is a product of Anthropic. CTRON Loop is an independent product that connects to it with your own API key.

Bring your own key. Keep your own numbers.

Start free with managed AI, then connect Anthropic whenever you are ready.

Create free accountFree plan. No card needed.