ECL Provider Extension (legacy)
You can extend for ECL (External Content Library) to allow access to any number of content formats. The ECLProvider extension point is a legacy way to create custom ECL Providers.
The ECL Provider Extension has no configuration properties, so the contents of a custom ECL Provider as configured in the manifest file looks as follows:
{
"name":"MyECLProviderExtension",
"type": "ECLProvider"
}