I made a generally programmable firehose-to-webhook server.
You'd specify the filters to handle a subset of events on the Bluesky firehose, posts from just a small set of users, or @-mentions, or just one country, or all posts with emoji in them.
Show HN: A programmable firehose-to-webhook server for Bluesky / Atproto
atprotowebhooks.com