Pair capability assess observability

/pair-capability-assess-observability — Observability Assessment

Evaluate and recommend the observability strategy: monitoring platform, logging approach, tracing, alerting, and dashboards. Follows the resolution cascade. Output-only: produces a proposal (rendered observability-section content + target) plus a report — writes no files. Persistence is delegated to /pair-capability-record-decision.

Arguments

Argument	Required	Description
$choice	No	Override: skip assessment, use this observability platform directly (e.g. grafana, datadog)

Composed Skills

Output-only — composes no skill, writes no files; the caller persists via /pair-capability-record-decision (see Composition Interface).

Proposal Target

The rendered adoption content is destined for this section — the caller writes it via /pair-capability-record-decision:

• Target: adoption/tech/infrastructure.md — observability section only
• Ownership: Observability section (shared file — /pair-capability-assess-infrastructure owns core sections)

Algorithm

Step 1: Resolution Cascade

Read resolution cascade for the generic Path A/B/C mechanics (check → skip → act → verify).

• Path A delta: override argument is $choice. On confirm, proceed to Step 3.
• Path B delta: adoption check is adoption/tech/infrastructure.md — populated observability section. If a corresponding decision record is missing, report the gap (this skill still writes nothing; the caller persists a backfill via /pair-capability-record-decision).
• Path C delta: proceed to Step 2.

Step 2: Read Guidelines

1. Act: Read observability guidelines:
   • Observability README — tool comparison, decision matrix, decision tree
   • Observability Principles — three pillars, proactive monitoring
   • Observability Tools — platform options
   • Structured Logging — logging standards
   • Metrics — metrics strategy
   • Alerting — alerting strategy
2. Act: Read project context:
   • adoption/product/PRD.md — scale, budget
   • adoption/tech/infrastructure.md — existing infrastructure choices (observability must integrate)
3. Verify: Every file listed in 1-2 above has been read; any that's missing follows Graceful Degradation (ask the developer directly) instead of silently proceeding to Step 3.

Step 3: Evaluate Options

1. Act: Use the Observability Platform Options table and Decision Tree from guidelines:

   • Evaluate: DataDog, New Relic, Grafana Stack, ELK Stack, Prometheus/Grafana
   • Consider: budget, scale, AI features needed, self-hosted vs managed

2. Act: Also evaluate:

   • Logging approach: structured JSON, log levels, sensitive data handling
   • Tracing: distributed tracing needs based on architecture
   • Alerting: notification channels, escalation

3. Act: Present recommendation:

   Observability Recommendation:

   • Platform: [name] — [rationale]
   • Logging: [approach] — [rationale]
   • Tracing: [approach or "not needed"] — [rationale]
   • Alerting: [strategy] — [rationale]

4. Verify: Developer approves.

Step 4: Render Adoption Proposal

1. Act: Render the observability section content — the ready-to-write body for infrastructure.md:
   • Platform, logging, tracing, alerting decisions
   • Scope strictly to the observability section so the caller's write preserves all other sections (owned by /pair-capability-assess-infrastructure)
2. Verify: The rendered content and its target are ready to emit.

Step 5: Emit Proposal

1. Act: Emit the proposal to the caller:
   • content: the rendered observability-section body from Step 4
   • target: adoption/tech/infrastructure.md (observability section)
   • decision-metadata: $type: non-architectural (observability tooling is typically a tool choice), $topic: observability-strategy, $summary: "[Platform] adopted for observability with [logging approach]"
   • plus the human-facing report (see Output Format)
2. Verify: Proposal emitted — see record-decision invocation contract for the persistence contract (persistence is always the caller's responsibility, delegated to /pair-capability-record-decision).

Output Format

Follows the Decision Shape.

ASSESSMENT COMPLETE (output-only — no files written):
├── Domain:    Observability
├── Path:      [Argument Override | Adoption Exists | Full Assessment]
├── Decision:  [platform + logging + tracing + alerting]
├── Proposal:  [content rendered for infrastructure.md observability section]
├── Target:    adoption/tech/infrastructure.md (observability section)
├── Persist:   [caller composes /record-decision(content, target) → ADL]
└── Status:    [Proposal ready | Confirmed existing]

Composition Interface

See record-decision invocation contract for the generic tuple + Input/Output/Persistence shape.

When composed by /pair-process-bootstrap:

• Input: /pair-process-bootstrap invokes during Phase 2, after /pair-capability-assess-infrastructure.
• Persistence: /pair-process-bootstrap composes /pair-capability-record-decision to write the observability section and record the ADL.

When invoked independently: the human (or agent) persists the proposal by composing /pair-capability-record-decision, then commits.

Edge Cases

• Project doesn't need observability (e.g. CLI tool, library): Render a minimal section noting "observability not applicable — [reason]" for the caller to persist.
• infrastructure.md exists but no observability section: Render content that adds the section; the caller's write preserves all other content.
• Multiple valid platforms score equally: Present top 2 with trade-off analysis.

Graceful Degradation

See graceful degradation (guideline missing → ask developer for platform preference directly) and record-decision contract (persistence unavailable → proposal stands as a report) for the standard scenarios. No additional cases.

Notes

• Observability decisions are typically non-architectural → the caller records them as an ADL. Exception: if the observability choice requires infrastructure changes (e.g. service mesh for tracing), the caller uses ADR.
• Section ownership: this skill renders content ONLY for the observability section of infrastructure.md. The single adoption writer is /pair-capability-record-decision.
• Educational content (observability principles, three pillars, WHY) stays in guidelines.