plantuml.security.credentials.path. The file extension is .credential, the file content is structured in JSON, the charset encoding is UTF-8, the filename must match the UserInfo part of the URL.
URL authentication
{
  "name": "<name of the configuration>",
  "type": "tokenauth",
  "properties": {
    "headers": {
      "key1": "value1",
      "key2": "value2",
      ...
    }
  },
  "proxy": {
    "type": "<proxy type>",
    "address": "<proxy server address>",
    "port": "<proxy server port>"
  }
}
name: required type: tokenauth requiredproperties.headers: proxy: proxy.type: required (direct, socks, http)proxy.address: requiredproxy.port:
{
  "name": "public-api",
  "type": "tokenauth",
  "properties": {
    "headers": {
      "Authorization": "ApiKey a4db08b7-5729-4ba9-8c08-f2df493465a1"
    }
  }
}