Subfinder integration
I have submitted a pull request to subfinder by ProjectDiscovery, adding support for activedns as a source. While waiting for subfinder PR to be accepted, you can use my fork at https://github.com/elnerd/subfinder
Tokens are self-service: enter your e-mail address on a token page, open the link we send you, and get a token to use with subfinder. Email address is only use to send this one-time link. You can get your token for subfiner here.
Feedback on the API, and requests for other tools you would like to see supported, are very welcome through the contact page.