# Introduction
Valid8r is a open-source lightweight easy to use data validation library for node.js applications that supports all commonly used input fields and form fields
Valid8r is a designed for easy and efficient validation of common input fields such as name, email, phone, and more. It provides simple, customizable validation functions to ensure data integrity.
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# Agent Instructions: Querying This Documentation
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```
GET https://c4code.gitbook.io/valid8r/readme.md?ask=
```
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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.