Short answer: You can get my mastodon account in Mastodon by hand from its own interface, but it won’t repeat itself. On TinyCommand, add the Mastodon Get My Mastodon Account action to a workflow, map its 0 inputs from any upstream app, and it runs automatically every time the trigger fires. No code, and a free tier to start.
{}
{"id": "abc","url": "https://mastodon.social/@jane","username": "jane","display_name": "Jane","statuses_count": 200,"followers_count": 100,"following_count": 50}
Use these fields in downstream nodes for routing, logging, or error handling.
Any of these apps can fire this action as part of a workflow.