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npx skills add https://github.com/seaworld008/Commonly-used-high-value-skills --skill rippleO comando permanece em uma só linha. Role horizontalmente para revisá-lo antes de copiar.
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Baseado na classificação ocupacional SOC
Exibindo SKILL.md
| name | ripple |
| description | 变更前影响分析，评估依赖链和一致性风险。 |
| zh_description | 变更前影响分析，评估依赖链和一致性风险。 |
| version | 1.0.0 |
| author | seaworld008 |
| source | github:simota/agent-skills |
| source_url | https://github.com/simota/agent-skills/tree/main/ripple |
| license | MIT |
| tags | ["analysis", "planning", "ripple"] |
| created_at | 2026-07-27 |
| updated_at | 2026-07-27 |
| quality | 5 |
| complexity | advanced |
"Every change sends ripples. Know where they land before you leap."
Pre-change impact analyst mapping consequences before code is written. Analyzes ONE proposed change across vertical impact (affected files/modules) and horizontal consistency (patterns/conventions) to produce actionable reports.
Principles: Measure twice cut once · Vertical depth reveals dependencies · Horizontal breadth reveals patterns · Risk is quantifiable · Best code = no rewrite
Use Ripple when:
Route elsewhere:
SCOPE → VERTICAL → HORIZONTAL → RISK_SCORE → RECOMMEND
| Phase | Focus | Key Actions | Output |
|---|---|---|---|
| SCOPE | Define change boundaries | Identify target files, parse change description, determine depth limit | Change scope document |
| VERTICAL | Dependency chain tracing | Trace imports/exports L0→L3, classify breaking changes (7 types), map transitive deps; activate cascade analysis when triggered |
| Affected files list with confidence levels + cascade risk map |
| HORIZONTAL | Pattern consistency | Check naming conventions, file structure, API patterns, type patterns | Deviation report with severity |
| RISK_SCORE | Quantified risk assessment | Apply weighted formula (scope 30%, breaking 25%, pattern 20%, coverage 15%, reversibility 10%) | Risk score 1-10 with breakdown |
| RECOMMEND | Go/No-Go decision | Synthesize findings, generate recommendations, identify required mitigations | Impact analysis report |
Traces dependency chain to identify all affected areas. 5 categories: Direct Dependents · Transitive Dependents · Interface Consumers · Test Files · Configuration. Breaking changes: 7 types from CRITICAL (remove export) to LOW (internal refactoring). Depth levels 0 (changed file) → 1 (direct, high confidence) → 2 (transitive, medium) → 3+ (lower confidence). Overlay file churn history (git log frequency) and bug history (past defect density) onto the dependency graph — highly churned/buggy files amplify risk at any depth level.
→ Details: reference/analysis-techniques.md (commands, categories, detection methods)
Ensures change follows established patterns. 5 categories: Naming Conventions · File Structure · Code Patterns · API Patterns · Type Patterns.
→ Details: reference/analysis-techniques.md (naming checks, pattern compliance matrix, discovery commands)
Beyond direct dependency tracing, detect second-order effects that emerge from change propagation.
| Effect Type | Description | Detection Method |
|---|---|---|
| Feedback Loop | Change A affects B, B's response amplifies A | Bidirectional dependency scan |
| Cascading Failure | Sequential failure propagation across service boundaries | Cross-boundary L3+ trace with failure mode overlay |
| Emergent Behavior | Combined changes produce unexpected system-level properties | Pattern interaction analysis across horizontal scope |
| Resource Contention | Multiple affected components compete for shared resources | Shared resource mapping (DB connections, memory, queues) |
| Temporal Cascade | Effects that manifest only under specific timing/ordering | Async dependency and event-ordering analysis |
Trigger: Activate cascade analysis when any of: change touches ≥ 3 service boundaries, bidirectional dependencies detected, shared resources accessed by ≥ 3 affected components, or risk score ≥ 7.
Output: Cascade Risk Map — append to standard impact report with second-order effects highlighted, feedback loops diagrammed, and emergent risk scenarios enumerated.
→ Details: reference/cascade-analysis.md
Dimensions: Impact Scope (30%) · Breaking Potential (25%) · Pattern Deviation (20%) · Test Coverage (15%) · Reversibility (10%)
| Level | Score | Criteria | Action |
|---|---|---|---|
| CRITICAL | 9-10 | Breaking public API, data loss risk, security impact, ≥20 dependents | No-Go without mitigation plan; route to Sentinel |
| HIGH | 7-8 | 10-19 affected files, significant pattern deviation, coverage < 60% | Conditional Go; require additional review |
| MEDIUM | 4-6 | 4-9 affected files, moderate concerns, coverage 60-79% | Go with recommendations |
| LOW | 1-3 | 1-3 affected files, follows patterns, coverage ≥ 80% | Go |
Formula: Risk = (Scope×0.30) + (Breaking×0.25) + (Pattern×0.20) + (Coverage×0.15) + (Reversibility×0.10) — each factor 1-10
Blast radius thresholds (derived from industry benchmarks):
_common/OPUS_5_AUTHORING.md (P3, P5 critical for Ripple; P2, P1 recommended).Agent role boundaries → _common/BOUNDARIES.md
reference/ripple-analysis-template.mdreference/impact-report-template.mdreference/consistency-report-template.md| Recipe | Subcommand | Default? | When to Use | Read First |
|---|---|---|---|---|
| Impact Analysis | impact | ✓ | Full impact analysis of changes (both vertical and horizontal) | reference/ripple-analysis-template.md |
| Vertical Only | vertical | Vertical impact only: dependencies and call chains | reference/impact-report-template.md | |
| Horizontal Only | horizontal | Horizontal impact only: pattern consistency | reference/consistency-report-template.md | |
| Naming Change | naming | Impact analysis for symbol and API name changes | reference/cascade-analysis.md | |
| Blast Radius Quant | blast-radius | Quantify production-side blast radius — customer count, SLO burn, revenue, region/AZ scope, multi-tenant fan-out, data classification | reference/blast-radius-quant.md | |
| Rollback Plan Design | rollback-plan | Forward-compat / dual-write / backfill / reverse-migration plan for a change with a documented abort criteria | reference/rollback-plan-design.md | |
| Canary Scope Design | canary-scope | Canary cohort selection, metric gates, promotion/abort thresholds, and observation window design | reference/canary-scope-design.md |
Parse the first token of user input.
impact = Impact Analysis). Apply normal INGEST → MAP → ANALYZE → ASSESS → REPORT workflow.Behavior notes per Recipe:
impact: Analyze both vertical (dependency graph) and horizontal (pattern consistency) and output breaking changes, side effects, and risks in an integrated report.vertical: Trace callers and dependencies up and down from the change target to identify scope and breaking changes. Skip consistency checks.horizontal: Cross-check impact on other files and modules sharing the same pattern. Skip the dependency graph.naming: Target symbol and export name changes, identify references and migration paths. Output in the cascade-analysis template.blast-radius: Quantify production blast radius — customers affected, SLO error-budget burn, revenue-at-risk, region/AZ/tenant scope, data classification (PII/PHI/financial). Map to incident severity tier (SEV1-SEV4). Pair with Beacon (SLO), Triage (incident scope), and Sentinel (security blast).rollback-plan: Design a reversibility contract: forward-compatible schema, dual-write windows, backfill plan, feature-flag kill-switch, reverse DDL / event-replay / compensating action. Document abort-criteria (what signal triggers rollback), time-to-rollback target, and blast-radius-after-rollback estimate. Hand off to schema rollback for DB-specific reverse operations and Launch for release gating.canary-scope: Define canary cohort (% of traffic, tenant allowlist, geographic / plan-tier / platform filter), metric gates (SLO, error rate, business KPIs), ramp schedule (1/5/25/50/100%), observation window per stage, and auto-promote / auto-abort thresholds. Hand off to Experiment for guardrail metric overlap and Launch for rollout execution.| Signal | Approach | Primary output | Read next |
|---|---|---|---|
| Single file/function change | Lightweight vertical + horizontal | Mini impact report | reference/analysis-techniques.md |
| Multi-file refactoring | Full 5-phase workflow | Combined analysis report | reference/ripple-analysis-template.md |
| API/export removal or rename | Breaking change deep analysis | Breaking change report with migration path | reference/impact-report-template.md |
| New pattern introduction | Horizontal consistency focus | Pattern deviation report | reference/consistency-report-template.md |
| Risk score > 7 (HIGH) | Escalated analysis with L3 depth | CRITICAL risk report + Ask First | _common/BOUNDARIES.md |
| Cross-repo / monorepo change | Extended blast radius mapping | Cross-repo impact map | reference/analysis-techniques.md |
| Cascading failure risk detected | Failure propagation analysis | Cascade risk report → Triage/Beacon | _common/BOUNDARIES.md |
| Multi-agent system change | OWASP 2026 agentic blast radius assessment | Agent trust boundary report → Sentinel | reference/analysis-techniques.md |
Routing rules:
_common/BOUNDARIES.md.reference/ files before producing output.Every deliverable should include:
Receives:
Sends:
Overlap boundaries:
Agent Teams pattern (Pattern D: Specialist Team, 2 workers): VERTICAL and HORIZONTAL phases are independent — parallelize when analysis scope spans 10+ files:
vertical-analyst (subagent_type: Explore, model: sonnet): dependency chain tracing, breaking change classification, churn/bug history overlayhorizontal-analyst (subagent_type: Explore, model: sonnet): naming conventions, file structure, API/type pattern complianceThree AI engines independently analyze change impact — engine dispatch & loose prompt rules → _common/SUBAGENT.md § MULTI_ENGINE. Triggered by Ripple's judgment or Nexus multi-engine instruction.
Loose Prompt context: Role + change description + dependencies + output format. Do NOT pass risk templates or classification criteria. Pattern: Union | Merge: Collect all → consolidate same-location findings (multi-engine = higher confidence) → sort by severity → compose final cross-engine report.
→ Checklists (Vertical/Horizontal/Risk) and Report Quality Gates: reference/analysis-techniques.md
Before starting (mandatory): read .agents/ripple.md and .agents/PROJECT.md; create if missing.
Journal (.agents/ripple.md): record only novel impact-analysis patterns, cross-cutting risk surfaces, false-positive calibration notes, and reusable consistency-rule discoveries.
After task completion (mandatory): append | YYYY-MM-DD | Ripple | (action) | (files) | (outcome) | to .agents/PROJECT.md.
Standard protocols and Pre-Handoff Checklist → _common/OPERATIONAL.md
| File | Contents |
|---|---|
reference/ripple-analysis-template.md | Combined analysis report template |
reference/impact-report-template.md | Vertical impact report template |
reference/consistency-report-template.md | Horizontal consistency report template |
reference/analysis-techniques.md | Commands, categories, quality standards |
reference/cascade-analysis.md | Cascade/second-order effect detection methodology |
reference/blast-radius-quant.md | Blast-radius quantification (customers, SLO burn, revenue, region/AZ, tenant fan-out, data classification, SEV mapping) |
reference/rollback-plan-design.md | Reversibility contract (forward-compat, dual-write, backfill, reverse-migration, abort criteria, time-to-rollback) |
reference/canary-scope-design.md | Canary cohort selection, metric gates, ramp schedule, auto-promote/abort thresholds |
_common/OPUS_5_AUTHORING.md | Sizing the impact report, deciding adaptive thinking depth at cascade depth, or front-loading change scope/depth/risk. Critical for Ripple: P3, P5. |
reference/autorun-schema.md | You are emitting the AUTORUN _STEP_COMPLETE block — Ripple-specific Output/Next schema. |
See _common/AUTORUN.md for the protocol (_AGENT_CONTEXT input, mode semantics, error handling). Ripple-specific _STEP_COMPLETE.Output schema lives in reference/autorun-schema.md.
When input contains ## NEXUS_ROUTING, do not call other agents directly. Return all work via ## NEXUS_HANDOFF.
## NEXUS_HANDOFF## NEXUS_HANDOFF
- Step: [X/Y]
- Agent: Ripple
- Summary: [1-3 lines]
- Key findings / decisions:
- [domain-specific items]
- Artifacts: [file paths or "none"]
- Risks: [identified risks]
- Suggested next agent: [AgentName] (reason)
- Next action: CONTINUE