fraud agent stalled waiting for signifyd sla callback that never came

TL;DR

An agent that waits only for a Signifyd callback has no defense against the one callback that never comes, and its case, and the customer order, wait forever. Build the wait as a bounded state: record when the case was submitted and the expected decision window, poll Signifyd for the case outcome on an interval after that window, and at the hard limit escalate to a human with the case id, submission time, and poll history attached. Most cases resolve by poll, because the outcome usually exists in Signifyd and only the notification was lost.

fraud agent stalled waiting for signifyd sla callback that never came

Use this when

• Agent cases sit in a waiting on Signifyd state far beyond normal decision times.
• Signifyd console shows a decision the agent never acted on.
• Orders are late because an agent run never resumed.

Not for this skill when

• The case is inside Signifyd normal investigation window. Polling early adds noise, not speed.
• Signifyd shows the case still open with no decision. Escalate the case with Signifyd, not just the agent wait.

Steps

1. Add wait metadata to every submitted case: submitted time, expected window, and poll schedule, stored on the case rather than in agent memory. Verify: a waiting case shows its age and next poll time in the queue.
2. Implement polling after the expected window: fetch the case from Signifyd and act on any final guarantee or review outcome found. Verify: a staged case with a suppressed callback completes by poll.
3. Set a hard wait limit, for example twice the normal SLA, at which the agent stops waiting and escalates with full context instead of polling forever. Verify: a staged never resolving case escalates at the limit with its history attached.
4. Reconcile daily: list every agent case waiting past the window and compare with Signifyd outcomes, clearing any stragglers the poller missed. Verify: the daily report shows zero unexplained aged waits.
5. Track callback arrival rate as a health metric so a rising miss rate triggers webhook investigation before cases pile up. Verify: the metric exists and an artificial dip alerts the team.

Variant phrasings

agent waiting signifyd decision never came

Missing decision phrasing.

signifyd callback lost agent stuck

Lost callback phrasing.

poll signifyd case outcome agent timeout

Polling solution phrasing.

Compatibility: Signifyd case API and webhooks with any agent orchestration framework that supports scheduled wakeups or durable timers. Poll intervals should respect Signifyd API rate limits.

Why it happens

Callback only designs assume webhook delivery is guaranteed, and it is not: endpoints fail, signatures break, queues drop events. Human teams notice a stale case because a customer complains; an agent in a wait state has no impatience, so the failure mode is silent and indefinite unless the wait itself is engineered with a deadline and a second path to the answer.

Edge cases / pitfalls

• Polling too aggressively burns API quota and can slow the very system you are waiting on. Poll on a widening interval.
• A case decided while the agent was stalled may have a stale order behind it, cancelled or already shipped. Revalidate the order before acting on a late decision.
• Keep the escalation human readable: case id, order id, wait duration, and last known Signifyd status, not a raw agent trace.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_Tp2nJqEurgerM2HJN7PeLA