Agent skill
branch-comparison
Use when the user asks to compare branches, analyze git diffs, review changes, update specifications based on code changes, or sync specs with implementation. Triggers on keywords like "compare branches", "git diff", "what changed", "branch comparison", "spec update", "sync specs".
Install this agent skill to your Project
npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/data/branch-comparison
SKILL.md
Branch Comparison & Specification Update
Expert full-stack analyst for branch diff analysis, impact assessment, and spec synchronization.
⚠️ MUST READ .claude/skills/shared/anti-hallucination-protocol.md — validation checkpoints, evidence chains, confidence levels
Phase 1: Branch Analysis
Build structured analysis in .ai/workspace/analysis/[comparison-name].md.
Git Change Detection
git diff --name-status [source]..[target]
git diff --stat [source]..[target]
git log --oneline [source]..[target]
Change Classification
For each changed file, document:
filePath,changeType(A/M/D),impactLevel(Critical/High/Medium/Low)serviceContext(Frontend/Backend/Config/DB)- Purpose: Feature, Bug Fix, Refactor
Related Files Discovery
For each changed file, find: importers, dependencies, test files, API consumers, UI components.
If file list exceeds 75, prioritize by impactLevel (Critical > High > Medium > Low).
Phase 2: Analysis & Planning
Code Review Analysis
- Strengths, weaknesses, security concerns, performance implications
Refactoring Recommendations
- Immediate improvements, structural changes, technical debt
Specification Update Plan
- New requirements discovered, test spec updates needed, documentation gaps
Phase 3: Approval Gate
CRITICAL: Present analysis and plan for approval before executing updates.
Phase 4: Execution
Update specification documents with: requirements, test specs, architecture docs, review findings.
Spec Update Mode
⚠️ MUST READ .claude/skills/branch-comparison/references/spec-update-workflow.md
Provides:
- Pattern-based discovery - grep patterns for finding spec files and cross-referencing
- Gap analysis template - Component | Specified | Implemented | Gap
- Update checklist - Entities, commands, queries, events, API endpoints
- 3 update patterns - Entity spec, command spec, API endpoint spec
Phase 5: Validation
Verify updated specifications accurately reflect all changes. Cross-reference:
# Verify all commands are documented
grep -r "class.*Command" --include="*.cs" -l # Find implementations
grep -r "CommandName" docs/specifications/ # Check in specs
Guidelines
- Evidence-based: All updates grounded in concrete
git diffoutput - Comprehensive impact: Analyze direct and indirect effects, including cross-service
- Platform-aware: Respect CQRS, Clean Architecture, platform patterns
- Full traceability: Ensure links between code, requirements, and tests
IMPORTANT Task Planning Notes
- Always plan and break many small todo tasks
- Always add a final review todo task to review the works done at the end to find any fix or enhancement needed
Recommended Agent Skills
Expand your agent's capabilities with these related and highly-rated skills.
agent-ops-spec
Manage specification documents in .agent/specs/. Use when user provides requirements, acceptance criteria, or feature descriptions that need to be tracked and validated against implementation.
agent-ops-state
Maintain .agent state files. Use at session start, after meaningful steps, and before concluding: read/update constitution/memory/focus/issues/baseline consistently.
agent-ops-spec
Manage specification documents in .agent/specs/. Use when user provides requirements, acceptance criteria, or feature descriptions that need to be tracked and validated against implementation.
agent-ops-testing
Test strategy, execution, and coverage analysis. Use when designing tests, running test suites, or analyzing test results beyond baseline checks.
agent-ops-testing
Test strategy, execution, and coverage analysis. Use when designing tests, running test suites, or analyzing test results beyond baseline checks.
agent-ops-state
Maintain .agent state files. Use at session start, after meaningful steps, and before concluding: read/update constitution/memory/focus/issues/baseline consistently.
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