FastSpring is a full-service ecommerce and merchant-of-record platform for SaaS, software, and digital product companies, handling global payments, tax compliance, subscription billing, checkout, and revenue management. The FastSpring API is a REST interface for managing orders, subscriptions, products, coupons, customers, and webhook events, secured via HTTP Basic Authentication using credentials issued from the FastSpring App Dashboard and with HMAC SHA-256 signing available for webhook payload verification.
APIs.json: https://raw.githubusercontent.com/api-evangelist/fastspring/refs/heads/main/apis.yml
- Type: Index
- Ecommerce
- Merchant of Record
- Subscription Billing
- Payments
- SaaS Billing
- Checkout
- Tax Compliance
- Created: 2026-05-11
- Modified: 2026-05-30
REST API for FastSpring's ecommerce platform covering orders, subscriptions, products, coupons, customers, sessions, returns, and webhooks. Authenticated using HTTP Basic credentials issued in the FastSpring App Dashboard under Integrations > API Credentials, with HMAC SHA-256 signing available to verify webhook payloads.
- Human URL: https://developer.fastspring.com
- Base URL:
https://api.fastspring.com
- Ecommerce
- Subscription Billing
- Payments
- Orders
- Webhooks
- Documentation
- Getting Started
- Authentication
- Webhooks
- Message Security
- OpenAPI — OpenAPI Specification
- AsyncAPI — AsyncAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
FN: Kin Lane Email: kin@apievangelist.com