express-jsonschema

Express middleware for JSON Schema validation, currently at version 1.1.6. It leverages the jsonschema library to validate request bodies against JSON Schema v4. The library provides a simple validate() middleware that attaches validation results to req.validations. Error handling is left to the developer, allowing custom responses. Compared to express-validator or Joi, this library decouples validation logic from schema definitions. It is in maintenance mode, with the last release in 2016 and no recent updates.