POST
/
billing
/
customers
curl --request POST \
  --url https://api.momentco.io/billing/customers \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --data '{
  "external_reference": "UCR1234567890",
  "name": "John Doe"
}'
{
  "id": "bcus_H4jp6KnU5cPw263v1jyz4",
  "external_reference": "UCR1234567890",
  "name": "John Doe",
  "email": "john.doe@example.com",
  "phone": "+27123456789",
  "currency": "ZAR",
  "balance": 2000,
  "payment_rules": {
    "min_amount": 100,
    "max_amount": 1000000,
    "underpayment_allowed": true,
    "overpayment_allowed": false
  },
  "metadata": {
    "customer_type": "premium",
    "registration_source": "website"
  }
}

Authorizations

​
Authorization
string
header
required

Authentication using Bearer tokens. Include your API key in the Authorization header.

Key Types:

  • Test Keys: sk_test_* for development and testing
  • Live Keys: sk_* for production environments
  • Public Keys: pk_test_* or pk_* for client-side operations

📩 Need access? Contact Support to request your API keys.

Usage:

Authorization: Bearer sk_test_4eC39HqLyjWDarjtT1zdp7dc

Headers

​
Idempotency-Key
string<uuid>
required

A unique key to prevent duplicate operations. Use the same key for retries to ensure idempotent behavior.

Best Practices:

  • Use UUIDs or other cryptographically unique identifiers
  • Maintain keys for at least 24 hours for retry scenarios
  • Use different keys for different operations
  • Monitor Idempotent-Replayed header for cache hits
Required string length: 1 - 255

Body

application/json

Request payload for creating a new customer

Response

201
application/json

Customer created successfully

A customer represents an individual or business entity that can have accounts and bills within the billing system.