Contact & Developer Inquiries
Have a question regarding synthetic test generation, payment gateway documentation accuracy, or security disclosures? We are committed to maintaining high standards of data integrity and developer privacy.
Technical & Support Inquiries
For technical feedback, questions about test card formatting, or integration assistance with test frameworks (Playwright, Cypress, Selenium).
support@testcardtools.proData Integrity & Gateway Updates
If a payment gateway updates their official sandbox test numbers or decline codes, please submit the official documentation URL and changelog reference.
data-integrity@testcardtools.proResponsible Disclosure & Privacy Guarantees
TestCardTools.pro does not operate user accounts, a card-data backend, or a database. Interactive card tools run in your browser. Optional aggregate analytics loads only after explicit consent and is isolated from tool inputs and generated values.
- Security Reports: If you discover an issue or vulnerability in our client-side implementation or build tooling, please email us directly with details.
- Review & Response: Inquiries regarding documentation accuracy or testing errors are reviewed on a best-effort basis by the engineering maintainers.
- Zero Real Financial Data: Please do not submit real card credentials, account details, or production API keys in correspondence. All communications must pertain strictly to synthetic test data and public documentation.