Privacy Policy

Last updated on November 4, 2026

Realstream is operated by Coastline Commerce Co. LLC, a California limited liability company (“Coastline,” “we,” “us” or “our”). This Privacy Policy explains what information we collect when you visit realstream.ai, create an account, or use the Realstream app at app.realstream.ai (together, the “Service”), how we use it, who we share it with, and the choices you have.

If you have a question about this policy or your information, email us at contact@realstream.ai.

1. Who this policy covers

Realstream is software for businesses that sell through live auctions on Whatnot. It is built for sellers running a business, not for personal or household use, and you must be at least 18 years old to use it.

This policy covers information about you as a Realstream customer or website visitor. Your account will also hold information about other people, such as the buyers who appear in your Whatnot orders and on your shipping labels. We handle that information on your behalf and only to provide the Service to you. Section 11 explains what this means for your buyers.

2. Information we collect

Information you give us.

Account details: your name and email address. If you sign in with Google, we receive your name, email address and profile picture from your Google account.
Business details: your business name and the other details you enter when you set up your business in Onboarding.
Your Whatnot connection: the access token you create in your Whatnot seller account and give to Realstream.
Files you upload: for example, shipping label PDFs, receipts, invoices and photos.
Assistant conversations: the questions you ask the AI assistant, the files you attach, and the answers it gives.
Your bookkeeping records: the costs, purchases and other entries you add or confirm in your books.
Messages to us: what you send when you email us or book a call.

Information from your Whatnot account. When you connect a Whatnot seller account, we read from it with your authorization: your Whatnot account ID and username, your products and listings, your orders and the items in them (including buyer usernames), your show results, and your completed financial transactions, such as sales, fees and payouts.

Information collected automatically.

Sign-in and security data: when you sign in, our authentication provider records details such as your IP address, browser, device type and sign-in times, and runs checks that tell people apart from automated bots.
Network and performance data: Cloudflare handles every request to our websites and app, which includes your IP address and browser details, to deliver pages and block attacks. We also use Cloudflare Web Analytics to count page views and measure page speed. It does not use cookies, and we see only totals, not individual visitors.
App activity: our servers record basic information about how the app is used, such as when you last signed in and which requests were made, to run and secure the Service.

We do not collect payment card or bank account details through the Service. We do not ask for sensitive information such as health information or government ID numbers, and you should not upload it.

3. How we use information

We use the information described above only to:

Provide the Service: create your account and business, set up your private bookkeeping, import your Whatnot data, build your packing, inventory, calendar and books views, and answer your questions in the assistant.
Support you: respond to your emails, help you set up, and talk with you about a plan when your trial ends.
Send service messages: such as sign-in codes, account notices and changes to our terms or this policy.
Keep the Service secure: verify who is signing in, prevent fraud and abuse, and find and fix problems.
Improve the Service: understand which features are used and where things break, so we can fix and improve them.
Meet legal obligations: comply with the law, respond to lawful requests, and enforce our Terms of Service.

We do not sell your personal information, and we do not share it for targeted advertising. We do not show ads in the Service.

4. The AI assistant

Realstream’s assistant answers with AI models made by other companies. When you ask a question, we send your question, any files you attach, and the records needed to answer it (for example, your sales, costs or stock) to the model that answers. When you use Smart sort in Packing, we send the buyer name or username and the items in each package so the model can plan the packing order.

These requests go through model access services (OpenRouter and OpenCode Go), which pass them to the company that runs the model you or the app selected. We send only what is needed for that request. Each model provider handles that information under its own terms.

You can delete a conversation at any time. Files attached to a conversation are deleted with it.

5. Google sign-in

If you choose to sign in with Google, we ask Google only for basic profile information: your name, email address and profile picture. We use this information only to sign you in and to identify your Realstream account. We do not request access to your Gmail, Google Drive, Google Calendar or any other Google service.

Realstream’s use and transfer to any other app of information received from Google APIs will adhere to the Google API Services User Data Policy, including the Limited Use requirements. We do not sell Google user data, use it for advertising, or use it to train AI models, and no person at Coastline reads it except with your permission, for security, or when the law requires it.

6. How we share information

We share information only in these ways:

Service providers that help us run Realstream: an authentication provider (Clerk) for sign-in; a network and security provider (Cloudflare) for our domains, website hosting and the encrypted connection to our app; AI model access services and model providers for the assistant, as described in Section 4; and an email provider (Apple iCloud Mail) for our email. They may use the information only to provide their services.
Whatnot: when we read from your Whatnot account or request reports from it on your behalf.
Legal and safety reasons: when we believe in good faith that the law requires it, or to protect the rights, property or safety of you, our users, Coastline or others.
Business transfers: if Coastline is involved in a merger, acquisition or sale of assets, your information may transfer as part of that deal, and this policy will continue to apply to it.
With your permission: in any other case where you ask us to or agree to it.

Inside Coastline, only the people who need your information to run and support the Service can access it.

7. Where your information is stored

The Realstream app and its databases run on servers we operate in the United States. Each seller’s bookkeeping records live in a separate, private bookkeeping site of their own. Our service providers may process information in the United States or other countries.

Realstream is operated from the United States. If you use it from another country, your information will be transferred to and processed in the United States.

8. Security

We protect your information with measures that include:

Encryption of data in transit between your browser and our app.
Encryption at rest of your Whatnot access token and the credentials for your bookkeeping site.
A separate bookkeeping site for each seller, so one business’s books are never mixed with another’s.
Access limited to the people and systems that need it.

No system is perfectly secure, and we cannot guarantee that information will never be accessed without permission. If a security incident affects your information, we will notify you as the law requires.

9. How long we keep information

We keep your account information and business records for as long as your account is open. When your account is closed, whether you ask us to close it or your access ends under our Terms of Service, we keep your records for 30 days so you can ask for an export. Within 30 days after that, we delete your bookkeeping site, your imported Whatnot data, your uploaded files and your assistant conversations. If you ask us to delete your data right away, we will not wait for the export period. We may keep limited information longer when we need it to meet legal obligations, resolve disputes or enforce our agreements.

If you disconnect a Whatnot account, we stop importing from it. The records already imported stay in your account until you delete them or close your account.

10. Your choices and rights

You can:

Access or export the information in your account.
Correct information that is wrong.
Delete your account and the information in it.
Disconnect Whatnot at any time in the app, and revoke the access token in your Whatnot account.
Delete individual assistant conversations in the app.

To make a request, email contact@realstream.ai from the email address on your account. We may need to confirm your identity before we act, and we will respond within 45 days.

California residents. California law gives you the right to know what personal information we collect, use and disclose; to delete it; to correct it; and to opt out of its sale or sharing for targeted advertising. We do not sell or share personal information, and we do not use sensitive personal information to infer characteristics about you. You may use an authorized agent to make a request for you. We will not treat you differently for exercising any of these rights.

Your browser may send a Global Privacy Control or Do Not Track signal. Because we do not sell or share personal information or use advertising cookies, there is nothing for these signals to switch off, and the Service works the same either way.

11. Your buyers’ information

Your Whatnot orders and shipping labels include information about your buyers, such as usernames, names and shipping addresses. You decide what to bring into Realstream, and we use that information only to provide the Service to you. You are responsible for having the right to use it and for meeting any obligations you have to your buyers. If a buyer contacts us about their information, we will refer them to you, and we will help you respond.