<!-- ZenPays documentation · https://docs.zenpayz.com/docs/rest-api/endpoints/customers/get-customer -->

# Get Customer

Retrieve details of a specific customer by ID.

<EndpointHeader verb="GET" path="/merchant/api/v1/customers/{customerId}" />

## Request

### Path Parameters

<ParamTable
  rows={[
    { name: "customerId", type: "string", required: true, desc: "Customer ID (e.g., `cust_a1b2c3d4e5f6g7h8`)" },
  ]}
/>

### Headers

<ParamTable
  label="Header"
  rows={[
    { name: "Authorization", required: true, desc: "`Bearer {api_key}`" },
    { name: "X-Signature", required: true, desc: "HMAC-SHA256 signature" },
    { name: "X-Timestamp", required: true, desc: "ISO 8601 timestamp" },
    { name: "X-Secret-Salt", required: true, desc: "Secret salt for HMAC validation" },
  ]}
/>

## Response

### Success (200 OK)

```json
{
  "success": true,
  "data": {
    "customerId": "cust_a1b2c3d4e5f6g7h8",
    "email": "john@example.com",
    "phone": "+1234567890",
    "firstName": "John",
    "lastName": "Doe",
    "country": "US",
    "status": "active",
    "riskLevel": "low",
    "riskScore": 15,
    "totalTransactions": 15,
    "totalAmount": 25000,
    "successfulTransactions": 14,
    "failedTransactions": 1,
    "averageTransactionAmount": 1785.71,
    "lastTransactionDate": "2024-01-14T15:30:00.000Z",
    "createdAt": "2024-01-01T10:00:00.000Z",
    "updatedAt": "2024-01-14T15:30:00.000Z"
  },
  "message": "Customer retrieved successfully",
  "error": null,
  "meta": {
    "request_id": "req_xxxxx",
    "timestamp": "2024-01-15T10:30:00.000Z",
    "processing_time_ms": 45,
    "api_version": "v1",
    "endpoint": "GET /customers/:id",
    "user_type": "merchant"
  }
}
```

### Error Responses

<ErrorTable
  rows={[
    { code: "UNAUTHORIZED", status: "401", message: "Invalid API key" },
    { code: "CUSTOMER_NOT_FOUND", status: "404", message: "Customer doesn't exist" },
  ]}
/>

<CodeRail>

## Examples

<Tabs groupId="language">
  <TabItem value="curl" label="cURL" default>

```bash
curl -X GET "https://api.zenpayz.com/merchant/api/v1/customers/cust_a1b2c3d4e5f6g7h8" \
  -H "Authorization: Bearer zp_test_xxxxx" \
  -H "X-Timestamp: 2024-01-15T10:30:00.000Z" \
  -H "X-Signature: a1b2c3d4e5f6..." \
  -H "X-Secret-Salt: your_secret_salt"
```

  </TabItem>
  <TabItem value="sdk" label="SDK">

```javascript
const customer = await zenpays.customers.get('cust_a1b2c3d4e5f6g7h8');
console.log(customer.email); // john@example.com
```

  </TabItem>
</Tabs>

</CodeRail>

## Related Endpoints

- [Update Customer](/docs/rest-api/endpoints/customers/update-customer)
- [Customer History](/docs/rest-api/endpoints/customers/customer-history)
- [Customer Risk Profile](/docs/rest-api/endpoints/customers/customer-risk)
