BuffMoneyBuild with BuffMoney.
Usage-based billing, CNY collection via WeChat Pay and Alipay, multi-currency settlement — exposed as a REST API. Start with Quick start to send your first event in five minutes.
Quick start
Sign up, mint a sandbox API key, send your first usage event. Copy-paste curl, no SDK required.
ReadIntegration guide
End-to-end: KYB, API keys, products, rate cards, customers, contracts, events, invoices, checkout, settlement.
ReadAPI reference
Every endpoint: method, auth, request body, response schema, error codes. Generated from the OpenAPI spec.
ReadWebhooks
Subscribe to invoice / payment / refund events. Verify HMAC signatures. Retry semantics + idempotency.
ReadConcepts & data model
Usage event → invoice → payment order → ledger → settlement. The seven objects every integration touches.
ReadOpenAPI spec
JSON spec at /api/openapi. Use it to generate clients in any language.
ReadSandbox keys work immediately after signup. Live keys unlock after KYB approval (1–3 business days from submission).