Fund Card

POST /api/v1/cards//fund - Add balance to a card

POST /api/v1/cards/{card_id}/fund

Fund Card

cURL

curl --request POST \
  --url https://api.usezentra.com/api/v1/cards/{card_id}/fund \
  --header 'Authorization: Bearer <token>'

import requests

url = "https://api.usezentra.com/api/v1/cards/{card_id}/fund"

headers = {"Authorization": "Bearer <token>"}

response = requests.post(url, headers=headers)

print(response.text)

const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};

fetch('https://api.usezentra.com/api/v1/cards/{card_id}/fund', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.usezentra.com/api/v1/cards/{card_id}/fund",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.usezentra.com/api/v1/cards/{card_id}/fund"

	req, _ := http.NewRequest("POST", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.usezentra.com/api/v1/cards/{card_id}/fund")
  .header("Authorization", "Bearer <token>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.usezentra.com/api/v1/cards/{card_id}/fund")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'

response = http.request(request)
puts response.read_body

Add funds to an issued card.

Endpoint

POST /api/v1/cards/{card_id}/fund

Path Parameters

card_id · string · required

The card identifier returned during card creation or listing.

Request Body

The reviewed public contract accepts a flexible JSON payload here. In practice, a safe funding request should include:

• amount_minor
• currency
• transaction_reference
• idempotency_key

Legacy reference may still be accepted by some downstream services, but new integrations should prefer transaction_reference.

Example Request

curl -X POST https://api.usezentra.com/api/v1/cards/card_123/fund \
  -H "Authorization: Bearer YOUR_SECRET_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "amount_minor": 500000,
    "currency": "NGN",
    "transaction_reference": "card_fund_card_123_001",
    "idempotency_key": "card_fund_card_123_001"
  }'

Response Notes

• The reviewed public OpenAPI models this as an accepted async-style operation.
• Use stable business references and idempotency keys for retries and reconciliation.

Next Steps

Card Balance

Check the current funded balance

Funding History

Review historical funding events