Agent Oncall Triage

On-call triage team of agents

An alert storm handled by one agent is fifty pages for one bad deploy and no memory of what already cleared. Split triage the way a mature on-call rotation does: one agent collapses duplicates, one rates real impact, one finds the matching runbook, and one draws the line where a human gets paged. The line is the point, because an agent that auto-resolves an alert it did not understand is worse than no triage at all.

Team

• Deduper: fingerprints and clusters alerts into incidents.
• Severity rater (site-reliability-engineer): scores blast radius.
• Runbook matcher: links the runbook and proposes the first step.
• Escalation gate (incident-commander-role): decides page, ticket, or suppress.

Shape: a per-alert pipeline looping over the alert stream, ending at a human escalation line.

Method

1. Deduper collapses the storm into incidents. Fingerprint on service, error signature, and affected tier, and group alerts inside a five-minute window into one record in incidents.jsonl. Fifty alerts for one deploy are one incident, not fifty pages.
2. Suppress known noise before rating. Match against a flapping list and maintenance windows; a blip that self-recovers within the window is logged, not escalated. Record the suppression so a muted-but-real alert stays auditable.
3. Severity from user impact, not the alert label. The rater scores blast radius (users affected, revenue path, data integrity) into SEV1 to SEV3, not the monitor's own priority field. A CPU spike on a spare replica is not a SEV1.
4. Match a runbook and propose the first step, not the fix. The matcher links the runbook for the signature and quotes the first diagnostic action ("check deploy 4471, roll back if error rate holds"). It suggests; it does not execute.
5. Draw the human escalation line explicitly. The gate pages a human for SEV1 and SEV2, anything touching data integrity, and anything with no matching runbook. Unknown means human; it never auto-closes an unmatched alert. Lower severities open a ticket.
6. Hand off context a paged human can use cold. triage-<id>.md carries what fired, the dedup count, severity and why, the runbook link, the suggested first step, and what was already ruled out. The 3 a.m. reader does not start at zero.
7. Loop the stream and close on recovery. Update the incident as new alerts arrive; close it when the source clears for a set window. Escalation and any mitigation stay a human decision.

Run it

In Claude Code, run the pipeline as chained subagents triggered per incoming alert batch over a shared incidents.jsonl, with the escalation gate as the final subagent whose page or ticket output routes to a human channel and never fires a mitigation. Port it to CrewAI as a sequential crew re-run per alert, to AutoGen as agents where the gate's decision ends the chain, or to LangGraph as a linear graph looping over an alert queue with a conditional edge at the escalation node.

Signals it works

• One bad deploy produces one incident and at most one page, not a storm.
• Every unmatched alert reaches a human; none is auto-closed by an agent.
• A paged engineer acts from triage-<id>.md without re-deriving context.

Boundaries

This triages and routes; it does not mitigate, which stays a human decision, and it does not replace the on-call engineer, only the sorting before them. Agents mis-cluster novel failure signatures and cannot judge impact they have no telemetry for. Severity ladders, paging policy, and suppression lists are your on-call convention; see oncall-handoff for the shift boundary.