What is the longest delay for a scheduled callback

86400 seconds, which is 24 hours. One POST is dispatched per job.

Run it

curl -s -X POST https://api.model.tools/api/v1/schedule -H 'Content-Type: application/json' -d '{"callbackUrl":"https://x.test/cb","delaySec":86400}'

Response

{"state":"queued","fireAt":"2026-10-30T02:43:00Z"}