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hapijs/joiDocumentation

hapijs/joi open-source repository on GitHub

Table of Contents (3 sections)▾

Installation Visit the joi.dev Developer Portal for tutorials, documentation, and support Useful resources

npm i joi

joi

The most powerful schema description language and data validator for JavaScript.

Installation

npm install joi

Visit the joi.dev Developer Portal for tutorials, documentation, and support

Useful resources

Document mirror archived from official upstream repository · Visit upstream GitHub

Snapshot date: 2026-11-07