Terms of use

Last updated 2026-11-10. These terms cover the tools at tools.cuelark.com, the MCP server at tools.cuelark.com/mcp, and Cuelark accounts at auth.cuelark.com. They are written to be read, not to trick you. By using the tools you agree to them; if you don't, please don't use them.

What you get

• The tools are free to use, with no account needed. An account is optional and only adds things like API keys.
• Most tools run entirely in your browser, and your files and text are not uploaded. The pages that do contact our server (the link checker, the IFSC lookup and the MCP server) say so on the page. The privacy page has the details.
• What you put in and what you get out stays yours. We claim no rights over your files, text or results.

Results are estimates, not advice

We work hard to make the results correct and cite the official source where one exists, but we can't promise every result is right for your situation. Tax, GST, loan, interest and BMI figures are estimates for planning. They are not tax, legal, financial or medical advice. Validators check format and checksums only and can't confirm a number was issued or is active. Check anything important with the official source or a qualified professional before you rely on it.

Fair use

• Don't use the tools, the link checker or the MCP server to attack, overload or scan systems you don't own, to send spam, or to break the law.
• Automated use through the MCP server is welcome within the published rate limits. We may slow down or block traffic that harms the service for others.
• Keep API keys secret. You are responsible for what is done with your keys, and you can revoke them at any time from your account.

Accounts

You can delete your account at any time by emailing us, and we will remove its data. We may suspend an account that breaks these terms, and we will tell you why if we can.

The service may change

The tools are provided as they are, without a guarantee that they will always be available or free of errors. We may add, change or remove tools and limits. If we make a change that matters to you, such as introducing paid features, we will update this page and the date above, and existing free tools will not silently start charging.

Open-source parts

Some tools use open-source libraries and data, such as PDF, HEIC and OCR engines, holiday data and the IFSC dataset. Their licences apply to those parts, and each tool page names its main sources.

Questions

Email contact@cuelark.com. We read every message.