Outbound webhooks
Subscribe a URL to a radar and receive a signed HTTPS request whenever a blip is created, changed or deleted, or a comment is added.
Each subscription belongs to one radar and gets its own signing secret, so your receiver can check that a request really came from On My Radar.
Delivery is durable. A failed request is retried on a schedule, up to six attempts. If a receiver keeps failing, the subscription pauses and you get a notification rather than a silent gap. The last hundred attempts are kept so you can see what happened.