FAQ

Which providers does Coin Moebius support?

Six rails: Stripe, PayPal, Authorize.Net, and Square for cards and wallets, NOWPayments for crypto (Monero, Bitcoin, and most major coins), and Pay by mail for cash, checks, Goldbacks, or anything else the buyer ships you.

We list the exact set, with no "coming soon," on the Providers page. If your rail isn't on that page, the Cloud doesn't offer it yet. The open-source SDK supports a few more rails than the Cloud surfaces, so running the SDK yourself is the answer if you need one we haven't wired up.

Do I need a backend server?

No. The whole point is that you don't. The buy button is a few lines of HTML you paste on your page. We handle every payment callback on our side and show the transactions in your dashboard. Nothing has to change about your site's hosting.

Do I need to know how to code?

Pasting the buy button means copying a few lines from your dashboard into your site's page editor. If you can paste an embed (Carrd, Webflow, Framer, Squarespace, WordPress, Notion sites, raw HTML, all fine), you can use Coin Moebius. You don't need to write or run any code beyond that.

What do you store about my buyers?

Almost nothing. The transaction amount, currency, status, and the provider's event id. No emails, no addresses, no IP addresses (we hash IPs with a pepper before storing them for rate-limiting, and we never log raw webhook bodies). Less data means less to leak and less to be asked for.

How does the pay-by-mail flow work?

The buy button's picker shows "Pay by mail" as an option (when you've configured it). The buyer sees your mailing address and a unique reference code like X2M-K9P-R7QW. When the buyer's payment shows up, you find the matching row in the dashboard and click "Mark received." The buyer gets a confirmation, your records line up. Rows that sit unreceived for 30 days auto-expire.

How do I test before going live?

The dashboard's "Send a test event" button creates a sample transaction for any provider you pick (Stripe, NOWPayments, or Pay by mail). Choose a product, choose what happened, choose the provider, and send. The row shows up tagged "test" under the correct provider filter. No real money, no external accounts needed, and test events don't count toward your quota.

For pay-by-mail specifically, pick "A pay-by-mail order is waiting" to get a row with a real reference code and "Mark received" / "Cancel" buttons so you can practice the confirmation flow.

For the full round trip (buyer's view through your view), paste a buy button on any page, click it, and walk through to completion. Stripe users can use test-mode keys and test card numbers. NOWPayments doesn't have a test mode, so a real micro-payment in a low-fee coin is the way to verify the full end-to-end. The docs page has the step-by-step for each provider.

Can I really accept Goldbacks (or other precious metals) through this?

Yes. That's what the pay-by-mail rail is for. The buyer picks "Pay by mail," the dashboard generates a reference code, and they ship you whatever you've agreed to accept. You mark the row received when the package arrives. The buyer gets their confirmation, your books match. We've used this flow for Goldbacks specifically, because the founder is a customer.

Can I sell subscriptions?

Yes. The hosted buy button works for subscriptions on Stripe and PayPal. Set a product to Monthly or Annual in your dashboard's Products tab, paste the same buy button on your page, and clicks start subscriptions. The provider runs the renewals, holds the card, and hosts the cancellation page.

Square and Authorize.Net subscriptions work too, but the buy button can't drive them. Both providers require the buyer's card to be collected on your own page (via their JavaScript widget). If you build that step yourself, the rest of the system (webhook handling, dashboard, status endpoint, normalized events) works the same way it does for Stripe and PayPal. The docs page has the full API shape.

Crypto subscriptions aren't on the roadmap. Recurring crypto is friction-heavy on every gateway we've evaluated, and we'd rather ship nothing than ship a half-broken story for it.

Can I use this without the buy button?

Yes. The buy button is one way in. Underneath, Coin Moebius is a rented webhook plus a small set of JSON endpoints. If you want to write your own UI, call our checkout API from your own server, or run a flow the button doesn't cover (a custom design, a mobile app, Square or Authorize.Net subscriptions), every endpoint the button uses is also callable from anything. No special account, no extra code on our side. The docs page has the full API surface listed.

How do I see which customer paid for what if you don't store buyer info?

Two ways. First, pass your own opaque user id at checkout time (your auth provider already knows who's logged in). We thread that string through to the payment provider and back, so every transaction in our dashboard carries the same id you use in your own system. You cross-reference and you know which user did what.

Second, every transaction in our dashboard has a "View in Stripe" link that drops you into the buyer's record on Stripe's own dashboard. Email, card last-four, dispute history, all of it lives there. We don't duplicate that data; we just link to it. Three places, each owning what it should own: our dashboard for the payment side, your auth system for the customer side, Stripe for the card-level detail.

Can a buyer edit my site and pay less than I'm charging?

No. Every product in your catalog is either Fixed or Buyer-priced, set per-product. Fixed is the default. When a product is fixed, the worker reads the price from your catalog and ignores any amount the buy button might have on it. Editing the HTML in a browser changes the display but doesn't change the charge. You can mark specific products as buyer-priced for donation widgets and tip jars, where the buyer is supposed to pick the amount; the dashboard makes you read what that means before flipping the switch.

We also never accept payment for a product that isn't listed in your catalog. If a buyer somehow points a buy button at product-id="something-i-didnt-set-up", the checkout fails with a clear error.

Will my data be subpoenaed?

We follow strict data-minimization (see the question above on what we store) and publish a warrant canary on the About page. The most personal thing on file is the merchant's account email, managed by our auth provider. We have no buyer addresses, emails, or IPs to hand over.

What's not in v1?

Signed-download fulfillment with email delivery. Multi-user accounts under one billing account. A programmatic API for the dashboard. Each lands when a customer asks for it loudly enough.

How do I cancel?

Pro on Stripe cancels via the Stripe Customer Portal, linked from your billing page in the dashboard. Pro on annual crypto has no auto-renew, so you just don't pay again at the end of the year. Any unpaid overage balance is invoiced once before the account drops to Free.

What's the Enterprise plan?

$100/month ($1,200/year, or $1,000/year in crypto) for unlimited transactions. No caps, no overage math. You also get higher API rate limits, a server API key, and priority on the support inbox. Everything else (dashboard, all rails, test events) is the same as Pro.

Enterprise is for businesses doing enough volume that Pro plus overages stops being worth the arithmetic, or whose finance team would rather budget one flat number. At typical mid-sized volume, $100/month for unlimited works out to less than one-tenth of one percent of revenue.

What happens if Stripe or NOWPayments freezes my account?

Your money never goes through us. It flows directly into your own provider account. So an upstream freeze hits you the same way it would have if you'd integrated the provider yourself; nothing about Coin Moebius makes it worse.

Because the picker supports more than one rail at once, you can leave the affected rail off and keep selling on the others while you sort it out. And because the SDK is open source, in the worst case you can also point it at a provider we haven't built into the Cloud yet and run that integration yourself.

Is the SDK really open source? Can I leave?

Yes. The SDK is at github.com/aquarian-metals/coin-moebius under an open license. The buy button works without our Cloud. Self-hosters point the SDK at their own server and skip us entirely. The whole point of building this on top of an open SDK is that you can leave.