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This article will introduce a Bank Card Basic Information Query API integration instruction, which can be used for querying basic information of bank cards.

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Application Process

To use the API, you need to first apply for the corresponding service on the Bank Card Basic Information Query API page. After entering the page, click the “Acquire” button, as shown in the image: If you are not logged in or registered, you will be automatically redirected to the login page inviting you to register and log in. After logging in or registering, you will automatically return to the current page. During the first application, there will be a free quota provided, allowing you to use the API for free.

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Basic Usage

First, understand the basic usage method, which is to input the bank card number to obtain the processed verification result. You need to simply pass a bank_card field, and then we can fill in the corresponding content on the interface, as shown in the image:

Here we can see that we have set the Request Headers, including:
  • accept: the format of the response result you want to receive, here filled in as application/json, which is in JSON format.
  • authorization: the key to call the API, which can be directly selected after application.
Additionally, the Request Body is set, including:
  • bank_card: bank card number.
  • encryption: optional, sensitive field encryption parameter (if you need to send encrypted data).
After selection, you can find that the corresponding code is also generated on the right side, as shown in the image:

Click the “Try” button to conduct a test, as shown in the image above, and we obtained the following result: 
{
  "result": "0",
  "description": "Query successful",
  "account_bank": "Industrial and Commercial Bank of China",
  "account_type": 1
}
The returned result contains multiple fields, described as follows:
  • result, authentication result code, with the following charging situation.
    • Charging result codes:
      • 0: Query successful
      • -1: No information found
    • Non-charging result codes:
      • -2: Verification center service busy
      • -3: Bank card does not exist
  • description, business result description.
  • account_bank, account bank.
  • account_type, card nature: 1. Debit card; 2. Credit card; 3. Prepaid card; 4. Quasi-credit card.
It can be seen that the basic information of the bank card has been queried. Additionally, if you want to generate the corresponding integration code, you can directly copy it, for example, the CURL code is as follows: 
curl -X POST 'https://api.acedata.cloud/identity/bankcard/check-1e' \
-H 'accept: application/json' \
-H 'authorization: Bearer {token}' \
-H 'content-type: application/json' \
-d '{
  "bank_card": "****"
}'
The integration code in Python is as follows: 
import requests

url = "https://api.acedata.cloud/identity/bankcard/check-1e"

headers = {
    "accept": "application/json",
    "authorization": "Bearer {token}",
    "content-type": "application/json"
}

payload = {
    "bank_card": "****"
}

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

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Error Handling

When calling the API, if an error occurs, the API will return the corresponding error code and message. For example:
  • 400 token_mismatched: Bad request, possibly due to missing or invalid parameters.
  • 400 api_not_implemented: Bad request, possibly due to missing or invalid parameters.
  • 401 invalid_token: Unauthorized, invalid or missing authorization token.
  • 429 too_many_requests: Too many requests, you have exceeded the rate limit.
  • 500 api_error: Internal server error, something went wrong on the server.

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Error Response Example

{
  "success": false,
  "error": {
    "code": "api_error",
    "message": "fetch failed"
  },
  "trace_id": "2cf86e86-22a4-46e1-ac2f-032c0f2a4e89"
}

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Conclusion

Through this document, you have learned how to use the Bank Card Basic Information Query API to query the basic information of the input bank card number. We hope this document can help you better integrate and use the API. If you have any questions, please feel free to contact our technical support team.