config.schema.json

{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "title": "OAuth 2.0 Provider Configuration",
  "type": "object",
  "properties": {
    "provider_name": {
      "description": "Name of the OAuth 2.0 Provider",
      "type": "string"
    },
    "provider_logo_url": {
      "description": "URL to a logo of the Provider",
      "type": "string"
    },
    "authorization_endpoint": {
      "description": "Details about the Authorization Endpoint",
      "type": "object",
      "properties": {
        "url": {
          "description": "URL of the Authroization Endpoint",
          "type": "string"
        },
        "query_parameters": {
          "description": "Additional custom/non-spec query parameters",
          "type": "object",
          "patternProperties": {
            ".+": {
              "description": "Details of a custom query parameter. The name of the property is the name of the query parameter.",
              "type": "object",
              "properties": {
                "allowed_values": {
                  "description": "Values allowed ot be used for this parameter",
                  "type": "array",
                  "items": { "type": "string" }
                },
                "description": {
                  "description": "Description of the parameter and its effects",
                  "type": "string"
                }
              }
            }
          },
          "additionalProperties": false
        }
      },
      "required": ["url"]
    }
  },
  "required": ["provider_name", "authorization_endpoint"]
}

===== atttibutes to define =====

{
  "token_endpoint": {
    "url": "https://www.googleapis.com/oauth2/v3/token", // URL to exchange the auth code 
    "supported_methods": ["POST"], // Supported HTTP methods
    "prefered_request_content_type": "application/x-www-form-urlencoded", // Prefered MIME type of the data that can be passed in the body of requests to the token endpoint.
    "default_response_content_type": "application/json" // MIME type of the data that is returned by the token endpoint by default.
  },
  "additional_endpoints": [ // Other endpoints that are related to OAuth
    "https://www.googleapis.com/oauth2/v3/token": {"supported_methods": "GET", "description": "Returns the information about the access token. You have to provide an Access Token as a query parameter"}
  ],
  "oauth2_version": ["draft_10", "draft_22", "final"],
  "scopes": { // Available scopes with a description
    "https://spreadsheets.google.com/feeds/": "Manage your spreadsheets."
    ...
  },
  "jwt_support": {
    "supported_alg": "RS256",
    "headers_parameters": [
      "alg": {"mandatory": true, "allowed_values": ["RS256"]},
      "typ": {"mandatory": true, "allowed_values": ["JWT"]}
    ],
    "claim_names": [
      "iss": {"mandatory": true, "description": "The email address of the service account."}, // For registered/public claim names you may add a description.
      "scope" : {"mandatory": true, "description": "A space-delimited list of the permissions that the application requests."}, // For non-spec/private claim names you MUST add a description.
      "aud": {"mandatory": true, "allowed_values": ["https://www.googleapis.com/oauth2/v3/token"]},
      "exp": {"mandatory": true},
      "iat": {"mandatory": true}
    ]
  },
  "supported_oauth_flow": ["implicit", "authorization_code", "jwt_bearer_token", "ext_android", "ext_post_message", "ext_installed_apps", "ext_authorization_code_oob"],
  "app_registration_url": "https://console.developers.google.com"
}