Cryptonly – Crypto Payment Gateway for WooCommerce

Website | Live Demo | Documentation

Let your customers pay with Bitcoin, Ethereum, USDT, and other cryptocurrencies — no crypto experience needed on your side.

You keep pricing products in your usual currency. At checkout, the customer picks a coin, sees exactly how much to send, and pays on a secure Cryptonly page. Once the payment is confirmed, the order in WooCommerce is marked as paid — no manual checking, no matching transactions by hand.

Why choose Cryptonly

• No chargebacks. Crypto payments are final — payment disputes and chargeback fraud disappear.
• Simple pricing. 0.5% per transaction. No setup fee, no monthly fee, no hidden costs.
• Keep your prices in fiat. The crypto amount is calculated live at checkout — you always receive the full order value.
• Sell worldwide. Anyone with a crypto wallet can pay you, from any country.
• Your money, your wallet. Payments go straight to your Cryptonly merchant wallet. Withdraw anytime — you pay only the blockchain network fee.

Setup takes minutes: install the plugin, paste your Cryptonly keys, done.

Works with your store

• Classic checkout and the new block-based Cart/Checkout
• Orders update automatically and securely — no manual status changes
• If a customer leaves before paying, they get a link to finish payment later
• Sandbox mode: test the whole flow safely before accepting real money
• HPOS (custom order tables) compatible
• Available in English, Spanish, German, and Russian

Requirements

• A Cryptonly merchant account
• WooCommerce 7.1+
• PHP 7.4+

Configuration

Cryptonly merchant dashboard

1. API Key — Settings → Security → API keys
2. Account ID — Accounts → select account → copy icon
3. Webhook Signing Key — Settings → Security

Enter your credentials in WooCommerce → Settings → Payments → Cryptonly. Enable Sandbox Mode for testnet testing before going live.

For full settings reference, go-live checklist, and troubleshooting, see the Documentation.

External services

This plugin connects your WooCommerce store to the Cryptonly merchant payment service. A Cryptonly merchant account and explicit configuration of API credentials in WooCommerce → Settings → Payments → Cryptonly are required before any external requests are made.

Domains contacted

• Production API: https://api-merchant.cryptonly.net
• Sandbox API: https://sandbox-api-merchant.cryptonly.net
• Hosted payment pages: URLs returned in API responses (paymentPageUrl) on *.cryptonly.net

When data is sent

• Creating or fetching a Cryptonly invoice (checkout)
• Cancelling an invoice when a WooCommerce order is cancelled
• Loading the supported fiat currency list (cached for one hour in WordPress transients)
• Receiving signed payment status webhooks from Cryptonly

Data transmitted to Cryptonly

• Order identifier, fiat currency, line items or order total, and order description
• returnUrl and webhookUrl for your store
• Optional WooCommerce customer ID
• API key in the x-tenant-api-key HTTP header (server-side only; never exposed to shoppers)

Data received from Cryptonly

• Invoice ID, status, and hosted payment page URL
• Cryptocurrency, amount received, and transaction hash (via webhooks)

Terms and privacy

• Cryptonly Terms of Service
• Cryptonly Privacy Policy

By configuring and enabling this gateway, you authorize the plugin to communicate with Cryptonly on your behalf using the credentials you provide.

Privacy

This plugin stores gateway settings in the WordPress options table (woocommerce_cryptonly_settings). Order metadata (_cryptonly_invoice_id, _cryptonly_payment_page_url, and related keys) is saved on WooCommerce orders for payment tracking and audit purposes.

When Debug Log is enabled, diagnostic messages may be written to WooCommerce logs (source: cryptonly). Uninstalling the plugin removes gateway settings and cached currency transients but does not delete order metadata or existing log files.

For how Cryptonly processes merchant and payment data, see the Cryptonly privacy policy linked above.

Translations

The plugin is fully translatable (text domain cryptonly-crypto-payment-gateway-for-woocommerce). Bundled translations:

• English (source)
• Spanish (es_ES)
• German (de_DE)
• Russian (ru_RU)

To switch language, set the site language in Settings → General → Site Language (or the user profile language). Both PHP strings and the block checkout label are translated.