There’s no such action directly, but there’s a workaround:

1. embed the board with “private” settings
2. use REST API to change board’s sharing settings (invite users, change public access status, etc)

Do you think that might work your case?

Could you explain why you might want to lock the board?

Our team is planning to integrate Miro Whiteboard In our videoconferencing app.

We are looking for option to lock/unlock board in between the conferencing call. so that other participant can not edit it for that duration only.

Thanks