HR & RECRUITING

On-Call PTO Coverage Gap Detector

Scans Outlook calendars for approved PTO that overlaps published on-call shifts and flags any day where no engineer is left covering.

CategoryHR & Recruiting
Enginesim
Difficultyintermediate
Triggerschedule
Steps5
Setup~15 min

How it runs

The automated pipeline, trigger to output.

  • TriggerNightly schedule fires
  • ActionLoad on-call shifts and eligible engineers from PostgresPostgreSQLPostgres
  • ActionRead approved PTO events from Outlook calendarsOutlook
  • LogicIntersect PTO with shifts, keep zero-coverage windows
  • OutputPost coverage gaps to on-call manager in SlackSlack

What it does

It compares approved time-off events in Outlook against the on-call rotation stored in Postgres, then surfaces every shift window that would be left with zero available responders. Each gap is posted to the on-call manager with the date, the role, and who is out.

When to use it

Run it nightly for any team that owns a pager. It catches the case where two on-call-eligible engineers both take the same week off and the rotation silently has no backup, before an incident hits an empty queue.

How it works

  1. 1A nightly schedule fires the workflow.
  2. 2It pulls the next 30 days of on-call shifts and eligible engineers from Postgres.
  3. 3It reads approved PTO events from the team's Outlook calendars over the same window.
  4. 4A logic step intersects PTO with each shift and keeps only windows where every eligible responder is out.
  5. 5For each true gap it composes a message listing the date, role, and absent people.
  6. 6It posts the gap list to the on-call manager's Slack channel, or a clean "all shifts covered" note when none exist.

Set it up

What you configure once, before turning it on.

  1. 1
    Connect OutlookMail, calendar, contacts.
  2. 2
    Connect PostgresAny Postgres URL — query, write, migrate.
  3. 3
    Connect SlackChannels, DMs, threads, mentions.
  4. 4
    Set each agent's modelWe leave models unset so you pick the tier — fast + cheap, or top-quality.
  5. 5
    Tune it to your dataEdit the prompts, filters, and field mappings so it matches how your team works.
  6. 6
    Test, then turn it onRun once against a sample, confirm the output, then enable the trigger.

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