Knock data sources

Knock wires your data stack directly to user messaging — when Stripe processes a payment, Clerk logs someone in, or Supabase updates a record, the message fires automatically instead of you stitching webhooks together at 2am. Built by Andrew Glassman, Chris Bell, Ilya Suzdalnitski and Mike Carbone, all full-time makers who ship actual tools instead of fundraising decks. This is infrastructure that just works, and honestly, that's rarer than it should be.