Joi
OPEN SOURCE
Object schema description language and validator for JavaScript objects.
About
Joi is a powerful schema description language and data validator for JavaScript. It is used to validate objects and ensure they conform to a specified schema.
Pricing
Pricing Type
Open Source
Free tier available
Last checked: February 20, 2026
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Key Facts
Categories
Platforms
Web
Company
Joi
Founded
Founded in 2013
Country
Global
Language
English