Introduction
FinStack is an AI-native developer platform that provides composable financial service primitives for building fintech products.
Architecture
Section titled “Architecture”All requests go through a single REST API endpoint:
https://api.finstack.dev/v1/Authenticate with an API key in the Authorization header:
Authorization: Bearer sk_live_<tenant>_<key>Primitives
Section titled “Primitives”Each primitive is an independent service with its own endpoints, scopes, and data model. They compose by sharing a common tenant_id and ledger.
| Primitive | Endpoints | Scope |
|---|---|---|
| Payment | /v1/payments | payment:read / payment:write |
| Customer | /v1/customers | customer:read / customer:write |
| Fraud | /v1/fraud | fraud:read |
| Receipt | /v1/receipts | receipt:read / receipt:write |
| Tax | /v1/tax | tax:read |
Next steps
Section titled “Next steps”- Quick Start — make your first API call
- Authentication — API keys and OAuth 2.0
- Payments guide — accept and manage payments