Open-source software for building a neobank.

Blueballs is a self-hostable banking software stack. It includes APIs and sandbox workflows for accounts, cards, transfers, onboarding, ledger, wallets and FX.

You can run it locally, create a sandbox key without applying, and connect the regulated providers required by your own deployment.

What is included

• Accounts
• Cards
• Transfers
• Exchange
• Savings vaults
• Credit lines
• Business banking
• Ledger and statements
• Onboarding and KYC
• QR and payment links
• Wallets
• Webhooks and events
• Sandbox scenarios
• Bills and subscriptions
• Rails registry

Use the sandbox API or view the source on GitHub.