curl --request POST \
  --url https://api.fastcac.com/v1/identities/nin_lookups \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "nin": "12345678901",
  "consent": true
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({nin: '12345678901', consent: true})
};

fetch('https://api.fastcac.com/v1/identities/nin_lookups', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.fastcac.com/v1/identities/nin_lookups"

payload = {
    "nin": "12345678901",
    "consent": True
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

package main

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

func main() {

	url := "https://api.fastcac.com/v1/identities/nin_lookups"

	payload := strings.NewReader("{\n  \"nin\": \"12345678901\",\n  \"consent\": true\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.fastcac.com/v1/identities/nin_lookups",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'nin' => '12345678901',
    'consent' => true
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

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

curl_close($curl);

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

{
  "object": "nin_lookup",
  "id": "ninl_6x9CKdEGQkJAbby8D1u7kN",
  "nin": "12345678901",
  "first_name": "ADA",
  "middle_name": "CHIOMA",
  "last_name": "OBI",
  "gender": "female",
  "date_of_birth": "1990-04-12",
  "phone": "08031234567",
  "address": "12 ADMIRALTY WAY, LEKKI, LAGOS",
  "photo": "data:image/jpeg;base64,/9j/4AAQSkZJRgABA…",
  "nimc_data": {},
  "amount_charged": "100.00",
  "transaction_id": "wtx_0hA6wRH6yeYHTLfRjK4Bxn",
  "created_at": "2026-10-26T05:55:58Z"
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "consent_required",
    "message": "Set consent to true to confirm the person whose NIN this is agreed to the lookup.",
    "param": "consent",
    "request_id": "req_xcacu6qO33kUNHSxBjY5G9Yd"
  }
}

{
  "error": {
    "type": "authentication_error",
    "code": "api_key_missing",
    "message": "Send your API key as `Authorization: Bearer <key>`.",
    "param": null,
    "request_id": "req_hXO9uf6JYXxTYMz20Du2lF8n"
  }
}

{
  "error": {
    "type": "payment_error",
    "code": "insufficient_balance",
    "message": "Your balance is ₦0.00; a NIN lookup costs ₦100.00. Fund your wallet by bank transfer to your funding account, then try again.",
    "param": null,
    "request_id": "req_T3QuXz9S4mAUr6Ilj7UfFnD3",
    "details": {
      "amount_due": "100.00",
      "balance": "0.00",
      "currency": "NGN",
      "funding_account": {
        "account_number": "0000000000",
        "bank_name": "TEST BANK",
        "account_name": "FastCAC - TEST MODE"
      }
    }
  }
}

{
  "error": {
    "type": "permission_error",
    "code": "live_mode_unavailable",
    "message": "Live registrations are paused right now. Use a test key (fc_test_…) meanwhile.",
    "param": null,
    "request_id": "req_gXc3KKfa1egcBqGIxApcVRIr"
  }
}

{
  "error": {
    "type": "not_found_error",
    "code": "resource_missing",
    "message": "No such registration: reg_0000000000000000000000.",
    "param": "id",
    "request_id": "req_5pBegFvIypCQp0ZmlXajiiet"
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "request_id": "<string>",
    "details": {}
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "nin_not_found",
    "message": "NIMC has no record of that NIN. Check the number. You weren't charged.",
    "param": "nin",
    "request_id": "req_SBKLBRia3TtzbQESMsQ1vznD"
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "request_id": "<string>",
    "details": {}
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "request_id": "<string>",
    "details": {}
  }
}