Cancel a message

Stop a queued message before it goes out.

DELETE https://beam.aisync.link/v1/messages/:id

curl -X DELETE https://beam.aisync.link/v1/messages/41 \
  -H "x-api-key: YOUR_WORKSPACE_KEY"

{
  "id": "41",
  "status": "cancelled"
}

• A queued message cancels instantly and never sends.
• A sent message that is still working its way through the network is cancelled on a best-effort basis. If it already reached the phone, you get a 409.
• Cancelling never unsends: once a message is on someone's screen, it is there.