incident

Purpose

Structured incident response for production issues. Follows a strict order: triage first, contain before investigating, root-cause after stable, postmortem last. Prevents the most common incident anti-pattern — developers debugging while the system is still on fire. Covers P1 outages, P2 degraded service, and P3 minor issues with appropriate urgency at each level.

Triggers

• /rune incident "description of what's broken" — direct user invocation
• Called by launch (L1): watchdog alerts during Phase 3 VERIFY
• Called by deploy (L2): health check fails post-deploy
• Signal: auto-triggers when watchdog emits incident.detected — no manual invocation needed

Calls (outbound)

• watchdog (L3): current system state — which endpoints are down, response times
• autopsy (L2): root cause analysis after containment
• journal (L3): record incident timeline and decisions
• sentinel (L2): check for security dimension (data exposure, unauthorized access)
• neural-memory (ext): after resolution — capture incident root cause + fix pattern cross-session so the same failure mode is never diagnosed twice

Called By (inbound)

• launch (L1): monitoring alert during production verification
• deploy (L2): post-deploy health check failure
• User: /rune incident direct invocation

Executable Steps

Step 1 — Triage

Classify severity using this matrix:

Severity	Definition	Contain Within
P1	Full outage — core feature unavailable for all users	15 minutes
P2	Partial degradation — feature broken for subset of users or degraded for all	1 hour
P3	Minor issue — cosmetic, edge case, or non-blocking degradation	4 hours

P1 indicators: 5xx on root /, auth endpoint down, payment flow broken, data loss detected P2 indicators: elevated error rate (>1%) on key flow, 1+ regions down, performance >5x baseline P3 indicators: UI glitch, non-critical feature broken, low error rate (<0.1%)

Emit: TRIAGE: [P1|P2|P3] — [one-line impact description]

Step 2 — Contain

Choose containment strategy based on what's available and severity:

Strategy	When to Use
Rollback	Last deploy caused regression (check git log vs incident start time)
Feature flag off	Feature-gated code — disable without deploy
Traffic shift	Multi-region: route away from affected region
Scale up	Resource exhaustion (CPU/memory/connection pool)
Rate limit	Abuse pattern or traffic spike
Manual intervention	DB locked record, stuck job, cache corruption

Execute containment action. Then invoke watchdog to verify system is stable before proceeding.

Emit: CONTAINED: [strategy used] — [timestamp] or CONTAINMENT_FAILED: [what was tried] — escalate

Step 3 — Verify Containment

Invoke watchdog with current base_url and critical endpoints.

Proceed to Step 4 only if watchdog returns ALL_HEALTHY or DEGRADED with upward trend. If watchdog returns DOWN — return to Step 2 with a different containment strategy.

Step 4 — Security Check

Invoke sentinel to check if the incident has a security dimension:

• Data exposure (PII, credentials in logs/responses)
• Unauthorized access pattern in logs
• Injection attack vector triggered the incident
• Dependency with known CVE involved

If sentinel returns BLOCK: escalate to security incident — different protocol (notify security team, preserve logs, document access chain). If sentinel returns PASS or WARN: continue to root cause.

Step 5 — Root Cause Analysis

Invoke autopsy with context:

• Incident start timestamp
• Failing components identified in Step 2-3
• Recent deploy info (commit hash, deploy timestamp, changed files)

autopsy returns: root cause hypothesis with evidence, affected code paths, contributing factors.

Do not attempt fixes — incident only investigates. Any code changes are a separate task.

Step 6 — Timeline Construction

Construct incident timeline using:

• Incident start time (when first detected)
• Triage time (when severity classified)
• Containment time (when system stabilized)
• RCA time (when root cause identified)
• Resolution time (when fully resolved)

Format:

[HH:MM] Incident detected — [who/what detected it]
[HH:MM] Triage: [P1/P2/P3] — [impact]
[HH:MM] Containment started — [strategy]
[HH:MM] CONTAINED — [watchdog confirms stable]
[HH:MM] RCA: [root cause summary]
[HH:MM] Resolution: [what was done]

Invoke journal to record the timeline and decisions in .rune/adr/ as an incident ADR.

Step 7 — Postmortem

Generate postmortem report and save as .rune/incidents/INCIDENT-[YYYY-MM-DD]-[slug].md:

# Incident Report: [title]

**Severity**: [P1|P2|P3]
**Date**: [YYYY-MM-DD]
**Duration**: [time from detection to resolution]
**Impact**: [users affected, data affected, revenue impact if known]

## Timeline
[from Step 6]

## Root Cause
[from autopsy — specific, not vague]

## Contributing Factors
[from autopsy — what made this worse]

## What Went Well
[containment speed, detection, communication]

## What Went Wrong
[detection lag, failed first containment, etc.]

## Prevention Actions

| Action | Owner | Due | Priority |
|--------|-------|-----|----------|
| [specific action] | [team/person] | [date] | P1/P2/P3 |

## Lessons Learned
[3-5 bullet points]

Output Format

## Incident Response: [title]

### Triage
P2 — Login service returning 503 for ~30% of users

### Containment
Strategy: Rollback to commit abc123 (pre-deploy from 14:32)
Status: CONTAINED at 15:07 — watchdog confirms ALL_HEALTHY

### Security Check
sentinel: PASS — no data exposure detected

### Root Cause (from autopsy)
Connection pool exhausted — new feature added synchronous DB call in middleware,
reducing available connections from 20 to 3 under load
File: src/middleware/auth.ts:47

### Timeline
14:32 Deploy completed
14:45 Alerts fired — 503 rate >1%
14:47 TRIAGE: P2
14:52 Containment: rollback initiated
15:07 CONTAINED
15:20 RCA complete
15:35 Postmortem drafted

### Postmortem saved
.rune/incidents/INCIDENT-2026-02-24-login-503.md

Constraints

1. MUST triage before any other action — severity determines urgency, approach, and escalation path
2. MUST contain before root-cause — investigating while system is down prolongs the incident
3. MUST invoke watchdog to verify containment — never assume contained without measurement
4. MUST invoke sentinel before closing — every incident has a potential security dimension
5. MUST NOT make code changes during incident response — incident investigates only; fixes are a separate task
6. MUST generate postmortem for every P1 and P2 — P3 optional

Mesh Gates (L1/L2 only)

Gate	Requires	If Missing
Triage Gate	Severity classified (P1/P2/P3) before any other step	Classify before proceeding
Containment Gate	watchdog confirms HEALTHY/DEGRADED-improving before RCA	Return to containment if still DOWN
Security Gate	sentinel ran before closing incident	Run sentinel — do not skip
Postmortem Gate	All sections populated (Timeline, RCA, Prevention Actions) before status = Resolved	Complete or note as DRAFT

Returns

Artifact	Format	Location
Incident response report	Markdown	inline (chat output)
Incident timeline	Text (HH:MM format)	inline + postmortem
Postmortem document	Markdown	.rune/incidents/INCIDENT-<date>-<slug>.md
Prevention actions table	Markdown table	postmortem
Journal entry (incident ADR)	Text	.rune/adr/ (via rune:journal)

Sharp Edges

Known failure modes for this skill. Check these before declaring done.

Failure Mode	Severity	Mitigation
Starting RCA before containment confirmed	CRITICAL	HARD-GATE: check CONTAINED status before calling autopsy
Declaring incident resolved without watchdog verification	HIGH	MUST call watchdog after containment — not just assume
Postmortem Prevention Actions without owners or dates	MEDIUM	Every action needs owner + due date — otherwise it never happens
Skipping sentinel because "looks like a performance issue"	HIGH	Security dimension is not always obvious — always run sentinel
P1 triage without 15-minute containment urgency	HIGH	P1 SLA = 15 min to contain — flag if containment exceeds threshold

Done When

• Severity triaged (P1/P2/P3) with impact description
• Containment executed and watchdog confirms stable
• sentinel ran and security dimension addressed (or escalated)
• Root cause identified via autopsy with file:line evidence
• Full timeline constructed
• Postmortem saved to .rune/incidents/ with Prevention Actions table
• journal entry recorded

Cost Profile

~3000-8000 tokens input, ~1000-2500 tokens output. Sonnet for response coordination.