# Coin Moebius

> Coin Moebius is a buy button you can paste on any website to take payments. Buyers pay by card, by crypto, or by mail through accounts the seller owns; Coin Moebius never holds the money and takes no cut of sales. An open-source SDK runs underneath, so sellers are never locked in. Real free tier, no card to start.

## Start here

- [Coin Moebius | the easy button for taking payments](https://www.coinmoebius.com/): Taking payments on your website is hard. Coin Moebius gives you the easy button: add it to your page and we handle the complex payment work for you.

## Why Coin Moebius

- [Flat pricing, 0% of your sales](https://www.coinmoebius.com/pricing/): Most tools take a cut of every sale. Coin Moebius charges one flat monthly price and zero percent of what you sell. A real free tier to start, no card.
- [Payment providers you can connect](https://www.coinmoebius.com/providers/): The exact payment providers Coin Moebius connects to: Stripe, PayPal, Authorize.Net, Square, NOWPayments, MakePay, and pay by mail. No 'coming soon,' no asterisks. If it isn't on this page, we don't support it yet.
- [The work behind your buy button](https://www.coinmoebius.com/why-coin-moebius/): A buy button on its own can't take a payment. Coin Moebius runs the invisible work behind it, so your buy button works and the money goes to you.

## What you can sell

- [You know what you're selling](https://www.coinmoebius.com/for/): You know what to sell. The part you're stuck on is getting paid for it. Pick the job you need done and get a buy button built to do it, with the cost laid out.
- [Accept Monero payments on your site](https://www.coinmoebius.com/for/accept-monero/): Accept Monero on any page, settling to your own wallet. Run the node yourself for no middleman, or use NOWPayments, with cards and mail in the same button.
- [Take crypto next to cards](https://www.coinmoebius.com/for/crypto-checkout/): One buy button that takes cards and crypto. NOWPayments forwards coins to your own wallet; a self-hosted Monero option keeps every middleman out. Prices stay locked on every rail.
- [Sell downloads from your own page](https://www.coinmoebius.com/for/digital-products/): Sell a PDF, an album, a sample pack, or a course from your own site. Attach the file to the product and we deliver it the moment payment confirms. No platform cut, no bandwidth bill.
- [Sell event tickets from one page](https://www.coinmoebius.com/for/event-tickets/): Sell tiered tickets to a workshop, show, or meetup from a one-page site. Each tier is a product with its own button; sliding-scale pricing works too. No events platform, no per-ticket fee.
- [Accept Goldbacks and pay by mail](https://www.coinmoebius.com/for/goldbacks-and-mail-payment/): A real checkout for payments that arrive in an envelope: Goldbacks, cash, or checks. Reference codes, statuses, and a 30-day expiry, with cards and crypto behind the same buy button.
- [Pay-what-you-want payments for your site](https://www.coinmoebius.com/for/pay-what-you-want/): Let buyers name their own price on any page, and many pay more than you would ask. You suggest an amount, the money lands in your own accounts, and we take no cut.
- [Stripe on a static site, no server](https://www.coinmoebius.com/for/stripe-without-a-backend/): Stripe checkout from a static site without writing a webhook handler. We receive and verify Stripe's events, log every sale, and run subscriptions. You paste two blocks of HTML.
- [A tip jar for the page you have](https://www.coinmoebius.com/for/tips-and-donations/): Put a tip jar or donation button on your own page. Supporters pick the amount and pay by card, crypto, or mail; the money settles into your own accounts and we take no cut.
- [If you can make it, you can sell it](https://www.coinmoebius.com/sell/): You've got something worth selling. Coin Moebius gets you paid for it from your own page with one buy button, and the money goes straight to you.
- [Take donations without a cut](https://www.coinmoebius.com/sell/causes/): Most donation tools take a cut before the money reaches you. Add a give button to your own page and keep all of it, whether it comes one-time or monthly.
- [Sell your work, keep the sale](https://www.coinmoebius.com/sell/creators/): Sharing your work shouldn't mean sharing your pay. Sell straight from your own page with a buy button, keep your audience, and keep your money.
- [One callback, every rail](https://www.coinmoebius.com/sell/developers/): Skip the button. A rented webhook plus a few JSON endpoints: point every payment rail at one URL, get one normalized event back, build on top. The SDK is open source, so you can self-host it.
- [Bill monthly, build none of it](https://www.coinmoebius.com/sell/founders/): The hard part of monthly billing isn't the charge, it's the renewals and tracking. Add a subscribe button, run your product, and we handle the rest.
- [Sell what you ship, skip the store](https://www.coinmoebius.com/sell/shops/): Selling what you ship usually starts with building a store. Add a buy button to the page you already have instead, and the money goes to your own account.

## Platform guides

- [Your site's ready. Now sell on it](https://www.coinmoebius.com/with/): You built a site you love and it still can't take a payment. Add a buy button to the builder you already use and start selling from the pages you made.
- [Add a buy button to Astro](https://www.coinmoebius.com/with/astro/): Add a payment button to an Astro site in three steps: a script tag in your layout head, a product in the dashboard, the button in any page. Plain HTML: no island, no client directive.
- [Add a buy button to Carrd](https://www.coinmoebius.com/with/carrd/): Add a payment button to a Carrd page in three steps: the script tag in head code, a product in the dashboard, the button in an Embed element. Embeds need Carrd Pro Standard or higher.
- [Add a buy button to Eleventy](https://www.coinmoebius.com/with/eleventy/): Add a payment button to an Eleventy site in three steps: a script tag in your base layout, a product in the dashboard, the button in any template language. No bundler changes needed.
- [Add a buy button to Framer](https://www.coinmoebius.com/with/framer/): Add a payment button to a Framer site in three steps: the script tag in Custom Code, a product in the dashboard, the button in an Embed component. Size the embed frame deliberately.
- [Add a payment button to Ghost](https://www.coinmoebius.com/with/ghost/): Sell one-off products on a Ghost site, next to your memberships. Paste the script in Code injection, drop the button into an HTML card, and take cards, crypto, or mail.
- [Add a buy button to a plain HTML site](https://www.coinmoebius.com/with/html/): Take payments on a plain HTML website with no backend. Paste one script tag in the head and a button where you sell, and accept cards, crypto, or pay by mail.
- [Add a buy button to Hugo](https://www.coinmoebius.com/with/hugo/): Add a payment button to a Hugo site in three steps: a script tag in baseof.html, a product in the dashboard, the button in a template, plus the Goldmark setting for inline HTML in Markdown.
- [Add a buy button to Jekyll](https://www.coinmoebius.com/with/jekyll/): Add a payment button to a Jekyll site in three steps: a script tag in your default layout, a product in the dashboard, the button in a page or post. Works on stock GitHub Pages.
- [Accept payments on a Notion site](https://www.coinmoebius.com/with/notion/): Notion cannot run a buy button on its own, but a host like Super or Simple.ink lets it. Add the script once, drop the button in a code block, and get paid.
- [Add a buy button to Squarespace](https://www.coinmoebius.com/with/squarespace/): Add a payment button to a Squarespace site in three steps: the script tag via Code Injection, a product in the dashboard, the button in a Code Block. Needs a Business plan or higher.
- [Add a buy button to Webflow](https://www.coinmoebius.com/with/webflow/): Add a payment button to a Webflow site in three steps: the script tag in Custom code, a product in the dashboard, the button in an Embed element. Custom code needs a paid site plan.
- [Add a payment button to WordPress](https://www.coinmoebius.com/with/wordpress/): Add a buy button to WordPress without WooCommerce. Paste the script in your header, drop the button in a Custom HTML block, and take cards, crypto, or pay by mail.

## Switching from another tool

- [Switching from another tool?](https://www.coinmoebius.com/coming-from/): Honest migration guides from the tool you use today: what stays the same, what you gain, what you give up, and the steps in order. Move only if the trade works in your favor.
- [BTCPay Server alternative, no self-hosting](https://www.coinmoebius.com/coming-from/btcpay/): A BTCPay Server alternative with no server to run and cards beside crypto. Where hosted convenience costs you self-custody, and when keeping your own node is the right call.
- [Coinbase Commerce alternative](https://www.coinmoebius.com/coming-from/coinbase-commerce/): Coinbase Commerce is winding down. Take crypto with no server: settle to your own wallet or a hosted account, plus cards and pay by mail. A flat fee, no cut of sales.
- [Gumroad alternative with no cut of sales](https://www.coinmoebius.com/coming-from/gumroad/): Gumroad takes about ten percent of every sale. Switch to a flat fee with no cut, keep automatic file delivery, and sell from your own page to your own audience.
- [Ko-fi alternative on your own page](https://www.coinmoebius.com/coming-from/ko-fi/): Leaving Ko-fi? Put the tip jar on a page you own, let supporters name their amount, and pay a flat fee with no cut. Crypto and pay-by-mail in the same button.
- [Lemon Squeezy alternative with crypto](https://www.coinmoebius.com/coming-from/lemon-squeezy/): A Lemon Squeezy alternative that runs on your own accounts and allows crypto. What merchant-of-record tax handling you give up, what control you gain, and how to move.
- [Paddle alternative on your own accounts](https://www.coinmoebius.com/coming-from/paddle/): A Paddle alternative: a flat fee over your own payment accounts instead of a cut of revenue. What you give up, what happens to existing subscriptions, and the steps to switch.
- [Payhip alternative with no cut of sales](https://www.coinmoebius.com/coming-from/payhip/): Leaving Payhip? Sell the same digital products from your own page, keep your buyers, and pay a flat fee with no cut of every sale. Cards, crypto, or pay by mail.
- [Polar alternative, own your accounts](https://www.coinmoebius.com/coming-from/polar/): Leaving Polar? Sell through your own Stripe, PayPal, or crypto accounts instead of a merchant of record. Keep your customers, pay a flat fee, and we take no cut.
- [Snipcart alternative with no per-sale fee](https://www.coinmoebius.com/coming-from/snipcart/): A Snipcart alternative for static sites: a buy button instead of a cart, with no fee on every sale. What changes, what stays the same with your processor, and how to switch.
- [Stripe Payment Links alternative](https://www.coinmoebius.com/coming-from/stripe-payment-links/): A Stripe Payment Links alternative on the same Stripe account: the buyer stays on your page, and the buy button adds crypto and pay by mail. The lowest-risk switch here.

## Documentation

- [Documentation](https://www.coinmoebius.com/docs/): Code samples, attribute reference, the workflow for each provider, subscriptions, and what every transaction status means. Everything you need to wire Coin Moebius into a static site.
- [Using the API](https://www.coinmoebius.com/docs/api/): Take payments without the button: authenticate, call checkout from your own code, and handle events and status polling.
- [API keys](https://www.coinmoebius.com/docs/api-keys/): Create, copy, use, and revoke a project API key to call checkout and status from your own server. What the cmk_ key is for, why it is shown only once, and how to keep it safe.
- [The buy button](https://www.coinmoebius.com/docs/buy-button/): Every attribute the buy button accepts, how to place more than one on a page, theming it to your site, and where buyers land after they pay.
- [Buyer email](https://www.coinmoebius.com/docs/buyer-email/): Brand the download-link and receipt emails buyers receive: business name, reply-to, subject, heading, and message, with a live preview. We never store buyer email addresses.
- [Connect a payment provider](https://www.coinmoebius.com/docs/connect/): Connect a payment account you already own. What each credential is for, how to find it, where the webhook goes, and how to run a first test payment. One guide per provider.
- [Connect Authorize.Net](https://www.coinmoebius.com/docs/connect/authorize-net/): Create a free Authorize.Net sandbox, find your API Login ID, Transaction Key, and Signature Key, set up the webhook, and test with sandbox cards before going live.
- [Connect Dodo Payments](https://www.coinmoebius.com/docs/connect/dodo/): Copy your Dodo API key and webhook signing secret, point a webhook at Coin Moebius, and test in Dodo test mode. Hosted card checkout for one-time payments, plus subscriptions via your own Dodo product.
- [Connect MakePay](https://www.coinmoebius.com/docs/connect/makepay/): Generate your MakePay API key, copy the webhook signing secret, point the callback at Coin Moebius, and verify the connection. Non-custodial crypto that settles straight to your own wallet.
- [Connect self-hosted Monero](https://www.coinmoebius.com/docs/connect/monero/): Run your own Monero node and accept Monero with no company in the middle. Set up the node, the mint endpoint, and the watcher, then connect with a mint URL and a webhook secret.
- [Connect NOWPayments](https://www.coinmoebius.com/docs/connect/nowpayments/): Get your NOWPayments API key and IPN secret, point the IPN callback at Coin Moebius, and verify with a small real payment. NOWPayments has no sandbox, so testing is real.
- [Set up Pay by mail](https://www.coinmoebius.com/docs/connect/pay-by-mail/): Accept mailed payments with no third-party account and no API key. Set your mailing address and buyer instructions, then confirm each payment by hand in the dashboard.
- [Connect PayPal](https://www.coinmoebius.com/docs/connect/paypal/): Create a PayPal app, copy the Client ID, secret, and Webhook ID, point a webhook at Coin Moebius, and test with a sandbox buyer before taking real payments.
- [Connect Square](https://www.coinmoebius.com/docs/connect/square/): Find your Square access token, signature key, and location id, set up the webhook, and test with a sandbox card. The checkout currency follows your Square location.
- [Connect Stripe](https://www.coinmoebius.com/docs/connect/stripe/): Get your Stripe keys and webhook signing secret, point a webhook at Coin Moebius, test with a test card, and go live. Step by step, with what each field is for.
- [Style the buy button](https://www.coinmoebius.com/docs/customize/): Make the buy button and its payment popup match your site. Live examples you can click, with the CSS to copy. Set a few variables for colors, fonts, and shape.
- [Getting started](https://www.coinmoebius.com/docs/getting-started/): Install the snippet, paste your first buy button, and see which payment providers you can connect to start taking payments on a static site.
- [Import products from a spreadsheet](https://www.coinmoebius.com/docs/import-products/): Add many products at once with a CSV file. Download the template and see what every column does, including per-option labels, prices, and pay-by-mail instructions.
- [Pay by mail](https://www.coinmoebius.com/docs/pay-by-mail/): Accept cash, checks, or Goldbacks by mail, and test the full pay-by-mail flow before you go live.
- [Pricing your products](https://www.coinmoebius.com/docs/pricing/): Fixed and buyer-priced products, when to use each, and how to switch a product between them safely.
- [Managing products](https://www.coinmoebius.com/docs/products/): Set up a product field by field: name and reference, fixed vs buyer-priced, pricing in Goldbacks (GBK), digital file delivery, one-time or recurring billing, live vs testing, and per-method payment options.
- [Statuses and refunds](https://www.coinmoebius.com/docs/statuses/): What every transaction status means, the events behind them, and how refunds work.
- [Subscriptions](https://www.coinmoebius.com/docs/subscriptions/): Charge monthly or yearly with one button: setup, the events you receive, buyer ids, and cancellation.

## Help and trust

- [About](https://www.coinmoebius.com/about/): Built by The Aquarian LLC. The team is its first customer. Includes the warrant canary.
- [Built with Coin Moebius](https://www.coinmoebius.com/built-with/): You reached this page from a Coin Moebius buy button. Coin Moebius lets anyone sell from a plain website (cards, crypto, or pay by mail) with no server to run.
- [FAQ](https://www.coinmoebius.com/faq/): The questions that come up most often: providers, pay-by-mail, fixed vs buyer-priced products, what we store, what happens if Stripe freezes you.
- [Troubleshooting](https://www.coinmoebius.com/troubleshooting/): Fixes for the buy button when it doesn't show up, won't open, or a payment fails. Plain steps for every site builder, plus what to check in your site security.
- [Trust](https://www.coinmoebius.com/trust/): What we keep, where the money goes, how to leave, where this runs, and how to report a security issue.

## More

- [Acceptable content](https://www.coinmoebius.com/acceptable-content/): What you can and can't sell when you attach a file to a product, and how we handle reports of prohibited content.
- [Accessibility](https://www.coinmoebius.com/accessibility/): How Coin Moebius approaches accessibility — the WCAG 2.1 AA bar we build toward, what we test by hand, and how to report a barrier you run into.
- [Copyright and DMCA](https://www.coinmoebius.com/copyright/): How to report content you own that someone is selling through us, our designated DMCA agent, and what happens after a valid notice.
- [Payments glossary, in plain English](https://www.coinmoebius.com/glossary/): Short, jargon-free definitions of the payment words that trip people up: webhooks, chargebacks, merchant of record, no backend, pay by mail, crypto, and Goldbacks.
- [What is a chargeback?](https://www.coinmoebius.com/glossary/chargeback/): A chargeback is when a buyer's bank reverses a card payment they dispute, pulling the money back from the seller, usually with a fee. What it is, and the payment options that have none.
- [Crypto payments on a website, explained](https://www.coinmoebius.com/glossary/crypto-payments/): Taking crypto like bitcoin or Monero on a site, with the coins landing in a wallet you control. The two usual headaches, and the simpler middle path.
- [Custodial vs non-custodial crypto](https://www.coinmoebius.com/glossary/custodial-vs-non-custodial/): Custodial means a company holds your crypto and pays you out; non-custodial means it lands straight in a wallet only you control. The trade-off, in plain English.
- [What are Goldbacks?](https://www.coinmoebius.com/glossary/goldbacks/): Goldbacks are thin notes with a little real gold inside, used as spendable physical money. What they are, and how to accept them online through pay by mail.
- [What is a merchant of record?](https://www.coinmoebius.com/glossary/merchant-of-record/): A merchant of record becomes the legal seller of your product, handles sales tax, and takes a cut of every sale. What that buys you, and what it costs you.
- [What does 'no backend' mean?](https://www.coinmoebius.com/glossary/no-backend/): A site with no backend has no server running behind it. What that means, why it makes taking payments tricky, and how to get paid without running one.
- [What is pay by mail?](https://www.coinmoebius.com/glossary/pay-by-mail/): Pay by mail lets a buyer mail you cash, a check, or something of value, tracked like any other order. How it works and how to keep it from becoming guesswork.
- [What is a payment gateway?](https://www.coinmoebius.com/glossary/payment-gateway/): A payment gateway carries payment details between your buyer and your provider, then brings the answer back so the sale can finish. What it does and why sites use one.
- [What is a payment link?](https://www.coinmoebius.com/glossary/payment-link/): A payment link is a web address that opens a ready-made page where a buyer can pay. How it works, when it fits, and the trade-off against a buy button on your own page.
- [What is a payment processor (also known as a payment provider)?](https://www.coinmoebius.com/glossary/payment-processor/): A payment processor, also known as a payment provider, is the company that moves a buyer's money to you and gets back a yes or no. What it does, how it differs from a gateway, and where it leaves a static site.
- [What is recurring billing (subscriptions)?](https://www.coinmoebius.com/glossary/recurring-billing/): Recurring billing is when a buyer agrees once and the charge repeats on schedule until someone cancels. How subscriptions work when you sell from your own site.
- [What is self-custody?](https://www.coinmoebius.com/glossary/self-custody/): Self-custody means you hold your own crypto in a wallet only you control, instead of a company holding it for you. What a crypto wallet really does, and why it matters when you get paid online.
- [What is settlement in payments?](https://www.coinmoebius.com/glossary/settlement/): Settlement is the moment the money from a sale actually reaches an account you own. How it works, why there is a wait, and who controls the timing.
- [What is a stablecoin?](https://www.coinmoebius.com/glossary/stablecoin/): A stablecoin is a digital currency built to hold a steady value, usually tied to a dollar. How it works, and how to accept one on your own website.
- [What is a static site?](https://www.coinmoebius.com/glossary/static-site/): A static site is a website made of finished pages, sent to every visitor exactly as they were saved. Why that makes it fast, cheap, and hard to break, and how to take payments on one.
- [What is a transaction fee?](https://www.coinmoebius.com/glossary/transaction-fee/): A transaction fee is what's taken out of a sale every time a payment goes through, usually a percentage plus a small fixed amount. Who charges it, and why a percentage grows as you grow.
- [What is a webhook?](https://www.coinmoebius.com/glossary/webhook/): A webhook is the automatic message one site sends another the moment a payment happens. What it is, why a static site cannot catch one, and what to do about it.
- [Newsletter and a free guide](https://www.coinmoebius.com/newsletter/): Join the Coin Moebius newsletter and grab our free guide to getting paid from your own page: the real fee math, the three ways to get paid compared, and your fastest first sale.
- [Press kit](https://www.coinmoebius.com/press-kit/): The Coin Moebius press kit: the official mark in four files, the brand colors with hex codes, a description you can quote, and how to reach us.
- [Privacy](https://www.coinmoebius.com/privacy/): What we collect, what we don't, who we share it with, and how to make us delete it.
- [Talk to sales](https://www.coinmoebius.com/sales/): Book a short call and see how Coin Moebius helps you take payments on the site you already have. The fastest way to reach us is Discord, and email is always open.
- [Fund the next coin SDK](https://www.coinmoebius.com/sdk-fund/): Coin Moebius is built by one developer. Pick a coin, help fill its funding meter, and when the goal is met that coin joins the SDK, open source.
- [Showcase](https://www.coinmoebius.com/showcase/): Real sites selling with the Coin Moebius buy button. Browse working shops from real merchants, and get your own site listed with a link back that search engines count.
- [Get help](https://www.coinmoebius.com/support/): Stuck on something? The fastest help is our Discord, the docs answer most questions, and you can send us a message and we will reply by email.
- [Terms](https://www.coinmoebius.com/terms/): The agreement between you (the merchant) and us (The Aquarian LLC, doing business as Coin Moebius).