Coming from Defender?

OpenZeppelin retired the hosted Defender service on July 1, 2026. If your monitors lived there, you can bring them to SixStar in one upload and keep watching the same contracts.

What the import reads

• Defender monitors saved with the Defender SDK or the older Defender client, as a JSON file.
• A Defender-as-code serverless.yml.
• OpenZeppelin Monitor's own files: monitors, networks and triggers. If you moved to the open source Monitor, bring those.

Your files are read in your browser. Only the rules made from them are sent to be checked, and nothing is kept until you save.

What does not come over

• Scripts. A monitor that runs your code is listed, not imported: we never run your code.
• Forta monitors and paused monitors.
• Monitors on Stellar, Solana or Midnight, and on any network we do not watch.
• Alert channels named only by their Defender id. Add those channels on the site; the import tells you which.

Anything that does not come over is listed by name with the reason, so nothing is dropped without you seeing it.

How to import

Sign in, open Watching, then Contracts, and choose your files in the Rules section. You need a watch on each contract first; the import tells you which ones are missing.