handoff

<!-- Copyright 2026 Anthropic PBC --> <!-- SPDX-License-Identifier: Apache-2.0 --> # Handoff Standing rules in `CLAUDE.md` apply — especially rules 10 and 11: fresh reader, lead with what to do. The incoming on-call missed everything; this document is their entire week's context, and it must arrive as **work they can start**, not "here's what happened". ## Sources — sweep all of them Fan out across every capability in `STACK.md` for the shift window (default: the week since the last handoff): - `pager` — every page and incident: state, severity, resolution - `alert-channels` — what fired, what people said, what never got a thread - `code` — merges/PRs touching on-call-relevant paths; reverts; deploys - `metrics` — week-over-week trend of the health signals in `ONCALL.md` - `lessons.md` — every entry appended this shift - each incident record's history over the shift window Cross-reference: an alert with no thread, a lessons entry with no incident, a metric trending wrong with no alert — these orphans are usually the "watch this week" items. ## Format Post to the channel as a message with the exec summary, full doc attached or linked: > 📋 **On-call handoff — week of {{date}}** > > **Exec summary:** N incidents (n resolved, n monitoring). N pages. > Anything systemic in one clause. > **On-call health:** the required weekly metric — incidents and pages > vs. last week, split by business-hours / off-hours, false pages, the > **rubber-stamp fraction** (diagnoses acted on with no recorded > verification step — the early warning that humans stopped > cross-examining; see eval/replay.md), and whether the trend is up or > down. This section is how the whole setup is > measured over time (see eval/replay.md), so never omit it and never > soften it. > **Intake health:** median and worst time from symptom onset to incident > declared this week (onset from the alert/thread timeline; declaration > from the incident record). If incidents routinely run 40 minutes before > anyone declares one, that's the process finding of the week — you can't > fix an intake path you don't measure. > **Watch this week:** the 1–3 things most likely to page you, each with > why and a link to its pattern (`lessons.md` tag or reference file). > **Start here:** the single highest-priority open item, with its current > state and next action. > **Full doc:** [link] · New to this channel? Read `ONBOARD.md` — how to > read a diagnosis, challenge one, or silence a routine. The full doc, per incident: **what happened** (one fresh-reader sentence, links) · **what it means** (pattern or one-off? systemic risk?) · **what you should do** (nothing / monitor / action, with the action named). Then: open items ranked by "will this page you?", not by age. Preventable repeats called out as playbook gaps with proposed reference-file amendments (rule 9 — fix the playbook, not just the incident). ## Drift check (required section) The ground moves between incidents; this is where the kit notices. Each week, flag: - any `STACK.md` binding that failed or 403'd during the week's work - any reference file whose first-checks cite a tool or query that no longer responds - anything in the `deploys` feed or announcement channels suggesting the infrastructure changed under the playbooks — a migration completed, a tool replaced, a service renamed - the routine registry vs. reality: does the "Standing work" canvas match the channel's actual routines? Fix the registry; flag any routine that exists but was never registered - open incidents with no update in >{{72h}} — the zombie list, each with its three-leg staleness evidence per ONCALL.md's lifecycle section, framed as "close it or update it", never closed by Claude (rule 2) Each flag arrives as a proposal, never an edit (rule 9): "re-run Discover for this binding," a reference-file amendment PR, or "re-run the replay against post-change incidents" (see eval/replay.md's re-validation triggers). A quiet week with no drift gets one line: "no drift detected." ## Discipline - "Here's what happened" without "start here" is a diary, not a handoff — the priorities are the point. - Never soften a preventable repeat. Write it plainly: "2 auto-reverts, both preventable." - If the week was quiet, say so in two lines and stop. Padding a quiet week erodes trust in loud ones.