API ReferenceInvoices
Create an invoice
Create a purchase for one or more product variants.
Create a purchase for one or more product variants.
Note
If a checkout URL is already available, it appears in data.checkout.
Otherwise, create a checkout session.
A subscription plan has its own rules for carts, quantity, trial pricing, coupons, and customers who already hold the plan. See Buying a plan before you sell one.
AuthorizationBearer <token>
Provide your SellApp API key as a bearer token.
In: header
Header Parameters
X-STORE?string
Store slug. Required for OAuth access tokens. API keys may omit it to use their current store, or the first accessible store when no current store is selected.
Request Body
application/json
TypeScript Definitions
Use the request body type in TypeScript.
Response Body
application/json
application/json
application/json
application/json
application/json
application/json
application/json
curl -X POST "https://sell.app/api/v2/invoices" \ -H "X-STORE: launch-lab" \ -H "Content-Type: application/json" \ -d '{ "customer_email": "maya.chen@example.com", "payment_method": "STRIPE", "product_variants": { "4321": { "quantity": 1 } } }'{
"data": {
"id": 9001,
"payment": {
"fee": {
"base": "0",
"currency": "USD",
"units": 1,
"vat": 0,
"total": {
"exclusive": "0",
"inclusive": "0"
}
},
"gateway": {
"data": {
"customer_email": "maya.chen@example.com"
},
"type": "STRIPE"
},
"subtotal": {
"base": "1999",
"currency": "USD",
"units": 1,
"vat": 0,
"total": {
"exclusive": "1999",
"inclusive": "1999"
}
},
"expires_at": "2026-09-02T12:00:01.000000Z",
"full_price": {
"base": "1999",
"currency": "USD",
"units": 1,
"vat": 0,
"total": {
"exclusive": "1999",
"inclusive": "1999"
}
},
"original_amount": {
"base": "1999",
"currency": "USD",
"units": 1,
"vat": 0,
"total": {
"exclusive": "1999",
"inclusive": "1999"
}
}
},
"status": {
"history": [],
"status": {
"status": "PENDING",
"setAt": "2026-08-30T12:00:01.000000Z",
"updatedAt": "2026-08-30T12:00:01.000000Z"
}
},
"webhooks": [],
"feedback": null,
"created_at": "2026-08-30T12:00:01.000000Z",
"updated_at": "2026-08-30T12:00:01.000000Z",
"store_id": 1,
"coupon_id": null,
"subscription_id": null,
"checkout": "https://checkout.stripe.com/c/pay/cs_example",
"customer_information": {
"id": 125,
"email": "maya.chen@example.com",
"country": "Germany",
"location": "Munich",
"ip": "1.3.3.7",
"proxied": false,
"browser_agent": "Mozilla/4.9 (Windows 98; sl-SI; rv:1.9.1.20) Gecko/20110422 Firefox/21.0",
"vat": null,
"discord_data": null,
"billing_details": null
}
}
}{
"type": "invalid_request_error",
"code": "bad_request",
"message": "The request could not be understood.",
"status": 400,
"param": null,
"request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
"docs_url": "https://sell.app/docs/api/errors#bad-request"
}{
"type": "authentication_error",
"code": "unauthenticated",
"message": "Unauthenticated.",
"status": 401,
"param": null,
"request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
"docs_url": "https://sell.app/docs/api/errors#unauthenticated"
}{
"type": "authorization_error",
"code": "forbidden",
"message": "This action is unauthorized.",
"status": 403,
"param": null,
"request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
"docs_url": "https://sell.app/docs/api/errors#forbidden"
}{
"type": "validation_error",
"code": "validation_failed",
"message": "The selected product variant id is invalid.",
"status": 422,
"param": "product_variant_id",
"request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
"docs_url": "https://sell.app/docs/api/errors#validation-failed",
"errors": {
"product_variant_id": [
"The selected product variant id is invalid."
]
}
}{
"type": "rate_limit_error",
"code": "rate_limit_exceeded",
"message": "Too Many Attempts.",
"status": 429,
"param": null,
"request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
"docs_url": "https://sell.app/docs/api/errors#rate-limit-exceeded"
}{
"type": "api_error",
"code": "api_error",
"message": "Server Error",
"status": 500,
"param": null,
"request_id": "01992a65-e064-71ba-b38f-902b7966a6be",
"docs_url": "https://sell.app/docs/api/errors#api-error"
}