A clearer language for validation.
ValidAPI.com brings practical explanations and readable examples to a subject where one word can carry too many meanings.
Make every result
easier to explain.
We focus on five familiar data families: driver’s licenses, passports, home addresses, mobile numbers, and legal names. The goal is to help developers and product teams distinguish useful observations from broader claims that need different evidence.
The site combines topic guides, fictional JSON examples, and a journal of implementation patterns. You can read, compare, copy, and download the examples without creating an account or submitting personal information.
A format check should be called a format check. A source that was not queried should remain not checked. And an unresolved result should lead to a useful next step, not an unexplained dead end.
Practical writing.
Visible evidence boundaries.
ValidAPI Editorial is the publication byline used for the guides on this website—not a statement of professional accreditation.
Answer a specific question.
Give each guide a distinct purpose, a practical implementation path, and clear limits.
Link a primary reference.
Use an authoritative source for the central technical distinction, then label proposed design patterns as guidance.
Show the next useful step.
Link concepts to documentation, related data families, and recovery patterns rather than leaving isolated definitions.
Make your next check
more meaningful.
Start with the right question. Build toward a clearer answer.