Is the API up?

API checked 16 October 2026

This page is a snapshot, not a live monitor. It records the result of a single check, and the date above is when that check ran. Automated uptime history is not published yet, so there is no other measurement on this page to show.

• Retry once. A dropped connection, a transient error or a rate limit is the usual cause, and a short wait followed by a retry often clears it.
• Check this page. Look at the date on the snapshot above. If the check is older than the trouble you are seeing, treat this page as out of date rather than authoritative.
• Report it. If the API stays down, tell us in the community with the time, the model you called and the error you saw. That is the fastest way for us to look into it.

You can check it yourself: https://api.heartflowai.net/health should return {"ok":true}, and https://api.heartflowai.net/v1/models should return the model catalogue. The client-side details — endpoints, request shape and error codes — are in the documentation.

• HFAI Cloud documentation — the quickstart, the model catalogue and the error reference.
• The Telegram community — ask a question or report an outage.

What this page is not: an automated monitor, and not a record of past incidents. We publish the current check and its date. A public uptime history does not exist yet.