CNAPS Code to Bank Branch API - Reverse Lookup | ToolKK

POSTPubliccnaps-code-bank-branch-query

CNAPS Code to Bank Branch

Enter a 12-digit CNAPS code to identify the bank and branch, including its name, region, address, phone number, and bank logo.

Documentation

Overview

Enter a valid CNAPS clearing code to identify the corresponding bank and account branch. The API returns the bank name, full branch name, province, city, address, phone number, and bank logo. bankCode is required.

Integration Examples

Includes ready-to-use Shell, Python, Go, Java, and PHP examples for direct integration.

Request Example

{
  "bankCode": "102100099996"
}

Response Example

{
  "code": "SUCCESS",
  "message": "成功",
  "data": {
    "bankCode": "102100099996",
    "lname": "中国工商银行股份有限公司某支行",
    "bank": "中国工商银行",
    "province": "北京市",
    "city": "北京市",
    "addr": "北京市某区",
    "tel": "010-00000000",
    "bankLogo": "https://example.com/bank-logo.png"
  }
}

Request Fields

The fields below are derived from example JSON for integration reference only.

Path	Type	Sample
bankCode	string	102100099996

Response Fields

The fields below are derived from example JSON for integration reference only.

Path	Type	Sample
code	string	SUCCESS
message	string	成功
data	object	{...}
data.bankCode	string	102100099996
data.lname	string	中国工商银行股份有限公司某支行
data.bank	string	中国工商银行
data.province	string	北京市

Shell Example

curl --request POST \
  --url 'https://openapi.toolkk.com/v1/cnaps-code-bank-branch-query' \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: YOUR_API_KEY' \
  --data '{\n  "bankCode": "102100099996"\n}'

Python Example

import os
import requests

url = "https://openapi.toolkk.com/v1/cnaps-code-bank-branch-query"
payload = {
  "bankCode": "102100099996"
}

headers = {
    "Content-Type": "application/json",
    "X-API-Key": os.getenv("TOOLKK_API_KEY", "YOUR_API_KEY"),
}

response = requests.request("POST", url, headers=headers, json=payload, timeout=30)
response.raise_for_status()
print(response.json())

Go Example

package main

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

func main() {
    endpoint := "https://openapi.toolkk.com/v1/cnaps-code-bank-branch-query"
    payload := []byte("{\n  \"bankCode\": \"102100099996\"\n}")

    req, err := http.NewRequest("POST", endpoint, bytes.NewBuffer(payload))
    if err != nil {
        panic(err)
    }

    req.Header.Set("Content-Type", "application/json")
    req.Header.Set("X-API-Key", "YOUR_API_KEY")

    resp, err := http.DefaultClient.Do(req)
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    body, err := io.ReadAll(resp.Body)
    if err != nil {
        panic(err)
    }

    fmt.Println(string(body))
}

Java Example

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class ToolkkExample {
    public static void main(String[] args) throws Exception {
        String payload = "{\n  \"bankCode\": \"102100099996\"\n}";

        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://openapi.toolkk.com/v1/cnaps-code-bank-branch-query"))
            .method("POST", HttpRequest.BodyPublishers.ofString(payload))
            .header("Content-Type", "application/json")
            .header("X-API-Key", "YOUR_API_KEY")
            .build();

        HttpResponse<String> response = HttpClient.newHttpClient()
            .send(request, HttpResponse.BodyHandlers.ofString());

        System.out.println(response.body());
    }
}

PHP Example

<?php

$endpoint = 'https://openapi.toolkk.com/v1/cnaps-code-bank-branch-query';
$payload = "{\n  \"bankCode\": \"102100099996\"\n}";

$ch = curl_init($endpoint);
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_HTTPHEADER => [
        'Content-Type: application/json',
        'X-API-Key: YOUR_API_KEY',
    ],
    CURLOPT_POSTFIELDS => $payload,
]);

$response = curl_exec($ch);
if ($response === false) {
    throw new RuntimeException(curl_error($ch));
}

curl_close($ch);
echo $response;