X-API-Key: ********************curl --location 'https://api.snakk.ai/api/billing/create-checkout' \
--header 'X-API-Key: <api-key>' \
--header 'Content-Type: application/json' \
--data '{
"plan_id": "starter",
"currency": "nok"
}'{
"url": "https://checkout.example.com/session/abc123",
"session_id": "cs_test_abc123"
}