{
  "title": "AJV JSON Schema Validation",
  "description": "Example of validating API request data against a JSON Schema using AJV in a Node.js middleware.",
  "language": "JavaScript",
  "package": "ajv",
  "schema": {
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "type": "object",
    "required": ["name", "email", "plan"],
    "properties": {
      "name": { "type": "string", "minLength": 1, "maxLength": 100 },
      "email": { "type": "string", "format": "email" },
      "plan": { "type": "string", "enum": ["free", "starter", "pro", "enterprise"] },
      "seats": { "type": "integer", "minimum": 1, "maximum": 500 }
    }
  },
  "valid_input": {
    "name": "Acme Corp",
    "email": "admin@acmecorp.com",
    "plan": "pro",
    "seats": 25
  },
  "valid_output": {
    "valid": true,
    "errors": null
  },
  "invalid_input": {
    "name": "",
    "email": "not-an-email",
    "plan": "gold",
    "seats": -1
  },
  "invalid_output": {
    "valid": false,
    "errors": [
      {
        "instancePath": "/name",
        "schemaPath": "#/properties/name/minLength",
        "keyword": "minLength",
        "message": "must NOT have fewer than 1 characters"
      },
      {
        "instancePath": "/email",
        "schemaPath": "#/properties/email/format",
        "keyword": "format",
        "message": "must match format \"email\""
      },
      {
        "instancePath": "/plan",
        "schemaPath": "#/properties/plan/enum",
        "keyword": "enum",
        "message": "must be equal to one of the allowed values"
      },
      {
        "instancePath": "/seats",
        "schemaPath": "#/properties/seats/minimum",
        "keyword": "minimum",
        "message": "must be >= 1"
      }
    ]
  }
}