APIBillingSubscription plan
Create a subscription plan (legacy compatibility)
Legacy compatibility endpoint for legacy Finix plan APIs. New integrations should use product-first price creation (`/v1/api/product-prices`) plus subscription item setup.
Authorization
apiKey x-easy-api-key<token>
Merchant API key. Publishable keys (pk_test_* / pk_live_) are safe for browser/frontend use and carry a limited scope set (sessions, payment_instruments, customers, orders writes; products, product_prices, payment_links reads). Secret keys (sk_test_ / sk_live_*) grant full admin access and must only be used server-side.
In: header
Request Body
application/json
TypeScript Definitions
Use the request body type in TypeScript.
Response Body
application/json
application/json
application/json
application/json
curl -X POST "https://loading/v1/api/subscription-plans/" \ -H "Content-Type: application/json" \ -d '{ "plan_name": "Premium Monthly", "amount": 2999, "currency": "USD", "billing_interval": "MONTHLY", "description": "Monthly premium subscription" }'{
"success": true,
"timestamp": "2026-02-06T12:00:00.000Z",
"message": "Subscription plan created",
"data": {
"id": "SPxxxxxxxxxxxxxxxxxx",
"name": "Premium Monthly",
"amount": 2999,
"currency": "USD",
"billing_interval": "MONTHLY",
"billing_interval_count": 1,
"trial_period_days": 14,
"created_at": "2026-02-06T12:00:00.000Z"
}
}{
"success": false,
"timestamp": "2019-08-24T14:15:22Z",
"error": {
"code": "string",
"message": "string",
"details": null
}
}{
"success": false,
"timestamp": "2019-08-24T14:15:22Z",
"error": {
"code": "string",
"message": "string",
"details": null
}
}{
"success": false,
"timestamp": "2019-08-24T14:15:22Z",
"error": {
"code": "string",
"message": "string",
"details": null
}
}