How it works
One request, sealed and delivered
Follow one notification from your script to the lock screen.
How a Prelay notification travels
A message leaves your script, is sealed into an encrypted envelope at the relay, passes through FCM as ciphertext, and arrives on an Android phone as a local notification.
your script
POST /v1/notify
Prelay relay
encrypt + route
FCM
transport only
your phone
decrypt + notify
sealed
can’t read
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PLAINTEXT
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PRELAY · NOW
Play
1 / send
FIG 1
The message is sealed before it reaches FCM. In Mode B, the sender seals it; in Mode A, the relay does. The phone decrypts and posts a local notification.