Privacy policy

Effective November 11, 2026

1. About this policy

Royal Peace LLC ("we") sets out in this policy how the diagram service svg-diagram (this website and its MCP server, "the Service") handles information about its users.

2. What we receive

Your Google account id and email address. To use the Service's MCP server you sign in with Google. We receive from Google only your account id (the OpenID Connect sub) and the email address Google has verified: not your name or profile picture. We turn the id into a hash and do not store the id itself. We store the email address with the times of your first and latest sign-in.

Use by invitation. People we invite individually can use the Service through an invitation URL without signing in. We then receive nothing from Google and no email address. Of the key in the invitation URL we store only a hash, with the name we know the person by.

Your choice about news by email. Before you sign in, you choose whether to receive news by email. The box starts unticked. If you tick it, we record when, and which version of the wording you were shown. If you stop the news, we record when.

The apps you connect. When an app such as ChatGPT or Claude registers with the Service, we store the name it gives and the address it asks to be sent back to.

Keys (tokens). Of the keys given to an app after you sign in, we store only hashes.

Your diagrams and slides. A diagram definition an app sends, and the headings, text and speaker notes of slides, are processed in memory only, to draw and check them and to make a PowerPoint file of them. They are neither stored nor logged.

Cookies. We use a short-lived cookie while you sign in (it expires after 10 minutes) and one that remembers which apps you allowed (it expires after 30 days). We use no cookies for advertising or tracking. The gallery pages use no cookies.

Access records. The Service's own code does not log request contents. Cloudflare, our host, processes IP addresses and similar data to protect and run its network.

3. Why we use it

To recognise you and provide the Service; to limit how often it is used so it is not abused, and keep it secure; and to send important notices about the Service, such as changes to how it works, its prices, its terms or this policy.

If you chose to receive news, we email you about new features of the Service, how to use it, and our related services. You can stop at any time with the link in each email or by contacting us below.

We do not sell your information or use it for anyone else's advertising.

4. How long we keep it

Your sign-in (the permission and its keys) expires 30 days after it was last used and is then deleted automatically. An app registration that goes unused for 90 days is deleted. Your email address and the record of your choice about news are deleted automatically two years after your latest sign-in, or when you ask us to delete them.

5. Sharing and service providers

We do not give your information to anyone else unless the law requires it.

If we use a provider to send email, we will list it on this page.

The Service runs on these providers, both in the United States: Cloudflare, Inc. (hosting and storage; privacy policy) and Google LLC (sign-in; privacy policy).

Your conversations in ChatGPT, Claude or another app are handled under that app's own policy. The Service receives only the diagram definitions and slide contents the app passes to its tools.

6. Security

All traffic is encrypted with HTTPS. Keys and authorization codes are stored only as hashes.

7. Your choices

Remove the Service from an app's settings and that app no longer uses it. You can also revoke the Service's sign-in under "Third-party apps & services" in your Google account.

You can stop news by email at any time with the link in each email or by contacting us below. We may still send important notices after you stop the news.

To see or delete what we hold about you, contact us below.

8. Changes

We announce changes to this policy on this page.

9. Contact

Royal Peace LLC info@svg-diagram.app