MastoGizmos

Mastodon allows users to place links in their bios and self-verify them. Mastodon also makes the verified links available via the Mastodon API. That means you can make a Mastodon search that shows posts only from users who have verified at least one link in their bios. The Big Mastodon Hashtag Search allows you to filter your results by verified users. This tool is a little bit more.

Mastodon Verified User Search still finds results from verified users, but it looks specifically for users whose verified links have the strings you specify. For example, you might do a hashtag search for rstats and limit your results to users who have verified links containing the string github. You might want to search for digitalhumanities and restrict your results to users who have verified links containing the string edu.

You also have the option to specify Mastodon instances to be searched in addition to the default list.