Claude 4 models are increasingly favored by developers and enterprises due to their powerful natural language processing capabilities and applicability in multiple scenarios. However, for domestic users, accessing the API permissions for Claude 4 and recharging the Anthropic API usage quota poses significant challenges. Due to international payment restrictions, traditional bank cards (such as UnionPay single logo cards) often cannot complete USD payments directly, while some virtual credit card platforms require the use of cryptocurrencies (such as USDT) for recharging, making the process complicated. Fortunately, WildCard provides a one-stop payment solution for domestic users, perfectly catering to the recharge needs of the Claude 4 API.
Recommended virtual card for Anthropic API recharge: https://leixue.com/go/yeka
Why choose WildCard?#
WildCard is a virtual credit card platform designed specifically for domestic users, dedicated to solving payment difficulties for overseas software service subscriptions. Compared to other virtual card platforms (such as Dupay, VCard, PokePay, WasabiCard, LocalCard), WildCard does not require users to have knowledge of cryptocurrencies and supports recharging through common domestic payment methods like Alipay and WeChat, making it very easy to use. More importantly, WildCard's payment channels are optimized for high stability and security, effectively avoiding payment interception issues, making it particularly suitable for binding and recharging the Anthropic API.
WildCard's card opening fees are transparent and affordable: the 1-year package is only $11.99, and the 2-year package is $16.99. By registering with the invitation code "LEIXUE," you can enjoy at least a $1 discount on card opening fees (WildCard official website). The recharge fee is only 3.5%, and there are no fees for consumption and withdrawals. The balance can be refunded to Alipay in real-time, greatly enhancing the flexibility of fund usage. For the first recharge, it is recommended to recharge at least $25 to cover a possible $5 pre-authorization fee and the API usage quota needs.
How to call the Claude 4 API using WildCard?#
Here are the detailed steps to activate Claude 4 API permissions and recharge the Anthropic API quota using WildCard:
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Register a WildCard account
Visit the WildCard official website, click the "Login/Register" button in the upper right corner, and select "Register." Enter your phone number (mainland users select +86, Hong Kong users select +852), obtain a verification code, and submit it to complete the registration. Don't forget to enter the invitation code "LEIXUE" during registration to enjoy the card opening discount. -
Activate the virtual card
After successful registration, log in to the WildCard backend and go to the "My Cards" page. Choose a suitable package (the 2-year package is recommended for better value), enter the invitation code "LEIXUE," and then pay the card opening fee via Alipay or WeChat QR code. After payment, the system will automatically generate the virtual card information, including card number, expiration date, and CVV code, so be sure to save it properly. -
Recharge the virtual card
After opening the card, the balance is zero, and you need to recharge on the "Recharge" page via Alipay or WeChat. It is recommended to recharge $25 for the first time to ensure there is enough balance to handle pre-authorization charges when binding to Anthropic. -
Bind the Anthropic account
Log in to the Anthropic official website, go to the Billing page of your account, select to add a payment method, and enter the virtual card information provided by WildCard (card number, expiration date, CVV). After confirmation, the system will perform a small pre-authorization verification, and once verified, the binding will be successful. -
Recharge API usage quota
On the Anthropic Billing page, select the recharge amount, and after confirming the payment, WildCard will automatically deduct the amount, and the API quota will be credited instantly. You can view the consumption records in the WildCard backend, with clear and transparent balance management.
Unique advantages of WildCard#
WildCard is not only suitable for the Claude 4 API but also supports many overseas services such as ChatGPT Plus, OpenAI API, GitHub Copilot, Midjourney, etc., covering the diverse needs of developers, content creators, and small to medium enterprises (Virtual credit cards supporting Claude). Compared to other virtual card platforms, WildCard does not require cumbersome KYC verification (optional Alipay facial verification can increase limits), has a high payment success rate, and provides support for overseas home network environments, helping users bypass IP detection issues to ensure smooth registration and payment.
Additionally, WildCard's refund mechanism is very user-friendly. If the Anthropic account is suspended for any reason, WildCard supports hassle-free refunds, and the balance can be refunded to Alipay in real-time without additional fees. In contrast, platforms like Dupay, VCard, PokePay, WasabiCard, and LocalCard rely on cryptocurrency recharges, which not only complicates the process but may also increase costs due to price fluctuations.
Notes#
- Network environment: To avoid payment interception, it is recommended to use a home network IP or high-quality proxy nodes, avoiding the risks associated with multiple users sharing the same IP.
- Balance management: Regularly check the WildCard balance to ensure sufficient API usage quota and avoid service interruptions due to insufficient balance.
- Consumption records: If a payment fails, you can check the transaction records in the WildCard backend to confirm whether the deduction was successful and troubleshoot the failure based on the details.
Summary#
For domestic users, calling the Claude 4 model API and recharging the Anthropic API usage quota, WildCard is undoubtedly the best choice. Its convenient Alipay/WeChat recharge methods, high stability payment channels, and transparent fee structure perfectly solve the pain points of international payments. Whether you are a developer or a business user, WildCard can provide efficient and secure payment support, allowing you to easily unlock the powerful features of Claude 4. Visit WildCard now, register using the invitation code "LEIXUE," and start your AI journey!