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ZendFi Documentation

Welcome to ZendFi!

ZendFi provides a complete payment infrastructure for merchants who want to accept cryptocurrency payments. Whether you're building an e-commerce store, SaaS platform, marketplace or AI agents that can make autonomous payments, ZendFi has you covered.

What is ZendFi?​

ZendFi is a crypto payment API built on the Solana blockchain that enables merchants to:

  • Accept payments in USDC, SOL, and USDT
  • Create recurring subscriptions with automated billing
  • Offer installment plans for high-ticket items
  • Generate professional invoices with email delivery
  • Create reusable payment links for social media and e-commerce
  • Configure payment splits for revenue sharing
  • Manage wallets with MPC passkey technology
ResourceDescription
Get StartedSet up your merchant account and create your first payment
Payments APIComplete API reference for creating payments
SubscriptionsRecurring billing and subscription management
WebhooksReal-time event notifications
SDKsTypeScript SDK documentation

Features Overview​

Payments​

Accept one-time crypto payments with QR codes and payment links. Support for USDC, SOL, and USDT with automatic price conversion.

Subscriptions​

Create recurring billing plans with flexible intervals (daily, weekly, monthly, yearly). Free trials, automatic billing, and webhook notifications included.

Installments​

Break large payments into manageable installments. Late fee support, grace periods, and automatic payment tracking.

Invoices​

Professional invoicing with line items, due dates, and email delivery. Automatic invoice numbering and payment tracking.

Reusable payment URLs for social media, e-commerce, and email campaigns. Beautiful hosted checkout pages included.

Payment Splits​

Configure revenue sharing between multiple wallets. Perfect for marketplaces, affiliates, and partner programs.

Webhooks​

Real-time notifications for all payment events. 23 event types across 8 categories with signature verification.

SDKs & Tools​

  • TypeScript SDK - Full-featured SDK for Node.js and browser environments
  • CLI - Command-line tools for testing and development
  • create-zendfi-app - Scaffold new projects with templates

Getting Help​

Ready to get started? Head over to the Get Started guide!

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