We're building the runtime AI agents have been missing.
Most teams trying to put agents into production hit the same wall: brittle glue code, no replay, no observability, no way to keep humans in the loop. We've shipped agent platforms at scale before — this is the one we wished we'd had.
FlowSync started in late 2025 as an internal tool at a 12-person startup that was building too many one-off agent scripts and losing track of which ones worked.
Six months in, we'd replaced thirty Python scripts with twelve FlowSync workflows. The team stopped writing glue code. We open-sourced the runtime in early 2026 and the waitlist hit 4,000 in a week.
Now we're hiring, raising, and onboarding design partners. If you've been burned by agent frameworks before, we want to talk.
The shortlist we won't bend on.
Inspectable by default
Every step is a record. You can replay it, diff it, evaluate it. No black boxes.
Composable, not monolithic
Use FlowSync for one workflow or all of them. We don't ask you to rewrite your stack.
Humans in the loop
Approvals, shadow runs, and policy gates are first-class. Agents work with people, not around them.
Want in early?
Design-partner slots include lifetime founder pricing and direct access to the team building it.