curl --request POST \
  --url https://api.iotools.cloud/v1/tool/apache-avro-schema-formatter-validator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "schemaInput": "{\"type\":\"record\",\"name\":\"User\",\"fields\":[{\"name\":\"id\",\"type\":\"long\"},{\"name\":\"email\",\"type\":[\"null\",\"string\"],\"default\":null}]}",
  "indent": "2"
}
'

{
  "tool": "apache-avro-schema-formatter-validator",
  "tool_version": "1.0.1",
  "outputs": {
    "summary": "Valid Avro schema — 1 record, 2 fields, 1 union.",
    "output": "{\n  \"type\": \"record\",\n  \"name\": \"User\",\n  \"fields\": [\n    {\n      \"name\": \"id\",\n      \"type\": \"long\"\n    },\n    {\n      \"name\": \"email\",\n      \"type\": [\n        \"null\",\n        \"string\"\n      ],\n      \"default\": null\n    }\n  ]\n}"
  },
  "credits_used": 3,
  "credits_remaining": null
}