sasindu/jsonschema.validator

Ballerina JSON Schema Validator

A lightweight Ballerina library for validating JSON values against JSON Schema (Draft 4+).

Key Features

✔ Validate JSON against schemas programmatically.
✔ Supports Draft 4+ schemas (with $id and modern keywords).
✔ Simple API – Pass JSON + schema, get validation results.
✔ Error Reporting – Detailed validation failures with paths.

import sasindu/jsonschema.validator as validator;  

json payload = { "name": "Ballerina", "version": "2201.7.0" };  
json schema = {  
    type: "object",  
    properties: {  
        name: { type: "string" },  
        version: { type: "string" }  
    }  
};  

error? result = validator:validate(payload, schema);  
if result is error {  
    // Handle validation failure
}