ENGINEERING
Escalate fast-burn SLO alerts to PagerDuty and halt in-flight promotions
When Honeycomb fires a fast-burn SLO alert, it pages the owning team via PagerDuty, cancels any in-flight Vercel promotion for that service, and drops an incident thread in Slack.
How it runs
The automated pipeline, trigger to output.
- TriggerHoneycomb fast-burn SLO alert webhookHoneycomb
- LogicConfirm fast-burn and map to owning rotation
- ActionTrigger PagerDuty incidentPagerDuty
- ActionCancel in-flight Vercel promotionVercel
- OutputOpen Slack incident threadSlack
What it does
Turns a Honeycomb fast-burn alert into immediate, coordinated action. The moment the short-window burn rate spikes, this workflow pages the right on-call rotation in PagerDuty, stops any Vercel promotion currently rolling out for the affected service so a bad change cannot widen the blast radius, and opens a Slack incident thread linking the alert and the paged responder.
When to use it
Use it for your most critical services where a fast-burn event needs a real page, not just a channel ping, and where halting an in-progress deploy is the correct reflex. Pairs well with an existing PagerDuty escalation policy.
How it works
- 1A Honeycomb fast-burn SLO alert webhook triggers the flow.
- 2A branch confirms the alert is fast-burn and maps it to the owning service and rotation.
- 3It triggers a PagerDuty incident on that service's escalation policy.
- 4It calls the Vercel API to cancel any in-flight promotion for the service.
- 5It opens a Slack incident thread linking the SLO, the page, and the halted deploy.
Set it up
What you configure once, before turning it on.
- 1Connect HoneycombDistributed traces and queries.
- 2Connect PagerDutyIncidents, on-call, escalations.
- 3Connect VercelDeploys, runtime logs, analytics.
- 4Connect SlackChannels, DMs, threads, mentions.
- 5Set each agent's modelWe leave models unset so you pick the tier — fast + cheap, or top-quality.
- 6Tune it to your dataEdit the prompts, filters, and field mappings so it matches how your team works.
- 7Test, then turn it onRun once against a sample, confirm the output, then enable the trigger.
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