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Adult Crypto Payments · Editorial review

SHKeeper review: free, open-source crypto payments

shkeeper.io

SHKeeper is open-source crypto payment software under the GPL v3 licence that merchants run on their own server. It takes no fees, handles Bitcoin, Lightning, USDT and USDC across many networks, and its Polish developer sells installation and support for $2,000 a year.

Open sourceSelf-hostedNo feesNo KYCLightning

Our verdict on SHKeeper

SHKeeper suits an adult site with in-house technical staff that wants to take crypto with no per-payment fee, no signup, no ID checks, and funds paid straight to wallets the merchant controls. USDT works on Tron, Ethereum, BNB Smart Chain, Polygon, Avalanche, Arbitrum, Optimism and TON.

Without a sysadmin, the free price turns into $2,000 a year for the managed plan, plus hosting.

SHKeeper homepage, a self-hosted crypto payment processor
SHKeeper

What SHKeeper costs

SHKeeper is free software and takes nothing from payments: the merchant pays only for the server it runs on. The WooCommerce, WordPress and WHMCS plugins are free too. The optional Advanced plan, at $2,000 a year, adds installation and integration by the developer, a year of support, server reinstalls and bug fixes. Custom work is quoted separately, and fees paid for services are not refunded.

Server requirements

For Bitcoin, Litecoin, Dogecoin and Monero, a server with 2 cores, 6 GB of RAM and a 20 GB SSD is enough. Ethereum, BNB, Polygon, Avalanche and Tron can run through the developer’s public full nodes. Running your own Ethereum node adds 4 cores, 16 GB of RAM and 1 TB of SSD, and a BNB node needs 16 cores, 64 GB and 3 TB. Installation can run on Kubernetes with the supplied Helm chart, so plan on a sysadmin.

Supported coins and networks

SHKeeper takes BTC on-chain and over Lightning, ETH, LTC, DOGE, XMR, XRP, TRX, BNB, SOL, MATIC, AVAX, FIRO, ARB, OP, TON and DAI. USDT runs on eight networks and USDC on seven, including Tron, Ethereum and BNB Smart Chain.

Features for paying models and affiliates

A multipayout API sends batches of payments to models or affiliates. Scheduled auto-withdrawals move funds to a cold wallet, private keys stay with the merchant and can be exported or imported, and partial payments and overpayment alerts are built in. Merchants can also add their own fee on top. Granting the developer’s support staff server access is at the merchant’s own risk.

The 2025 exchange-rate bug

Installations and updates made between 18 December 2024 and 20 January 2025 applied wrong exchange rates, so some invoices charged customers too much or too little. The developer issued an urgent patch. With self-hosted software, watching release notes and updating falls to the merchant: the latest release shipped at the end of August 2026.

Who develops SHKeeper

Antarix Sp. z o.o., a company registered in Kraków, Poland, owns the SHKeeper trademark and leads development. The source code has been public on GitHub since May 2022 under the account of VSYS Host, which also offers hosting for it. No licence is cited, since SHKeeper never touches merchant funds.

SHKeeper strengths and limitations

Strengths

  • No processing fee and public source code.
  • USDT on eight networks plus Lightning.
  • Funds paid to the merchant’s own wallets.
  • An identified developer in Poland.

Limitations

  • A technical install that needs a sysadmin.
  • Paid help at $2,000 a year.
  • Updates to apply yourself.

SHKeeper vs PayRam

PayRam is also self-hosted and installs in one command, adds card-to-crypto payments, but charges a fee it does not publish. SHKeeper charges nothing and publishes its code. BTCPay Server is free too but built around Bitcoin and Lightning.

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