Analyze & Plan
Analyze what you're building and define clear acceptance criteria before writing code. This skill provides task-specific analysis guidance for different types of AEM development work.
When to Use This Skill
Invoked by: content-driven-development skill (Step 2)
Use this skill to:
- •Analyze visual designs/mockups (if provided)
- •Understand requirements for the task
- •Define what success looks like
- •Document analysis for reference throughout development
Workflow
Follow these steps in order:
Step 1: Visual Analysis (if provided)
Skip if: No screenshots, design files, or reference URLs provided
If visual materials provided:
See resources/visual-analysis.md for complete visual analysis guidance covering:
- •Visual elements - Layout, typography, colors, spacing, borders, shadows, effects, icons, imagery
- •Interactive elements - Components, states (hover/focus/active), animations, transitions
- •Dynamic UI patterns - Modals, tooltips, dropdowns, accordions, carousels
- •Content structure - Hierarchy, repeating patterns, content types
- •Responsive behavior - Mobile, tablet, desktop variations
- •Systematic mapping - Page vs component, existing patterns, block model classification
What to do:
- •Gather all visual materials (screenshots, designs, URLs)
- •Use visual-analysis.md guide to systematically analyze
- •Document findings using the provided template
- •Extract key requirements for next steps
Output: Visual requirements documented for use in next steps
Step 2: Understand Requirements
What to do:
- •Think about what you are building/fixing/modifying?
- •Consider why this is needed?
- •What's the context surrounding these changes?
- •Consider all viewports (mobile, tablet, desktop)
- •Think about the author experience and how that impacts what we do
Ask the user questions if needed:
- •Clarify unclear requirements
- •Understand edge cases
- •Confirm assumptions
- •Get missing information
Use task-specific guidance:
- •See "Task-Specific Analysis Guidance" section below
- •Apply appropriate guidance based on task type
Output: A clear understanding of all requirements
Step 3: Define Acceptance Criteria
What to define:
- •What does "done" look like?
- •How will you validate success?
- •What should NOT break (regressions)?
Include:
- •Visual match (if designs provided)
- •Functional requirements
- •Responsive behavior
- •Author experience
- •Performance considerations
Use task-specific guidance:
- •See acceptance criteria guidelines in "Task-Specific Analysis Guidance" below
Output: Specific, testable acceptance criteria
Step 4: Document Analysis
Create markdown file at: drafts/tmp/{block-name}-analysis.md
- •Use the block name being worked on (e.g.,
drafts/tmp/hero-analysis.md) - •For non-block work, use descriptive name (e.g.,
drafts/tmp/navigation-fix-analysis.md)
File should include:
- •Task description and context
- •Visual analysis (if applicable)
- •Requirements identified
- •Acceptance criteria defined
- •Any open questions or assumptions
Notes:
- •This is a working artifact, not committed to git
- •Used for reference throughout development (especially in Step 7: Final Validation)
- •Allows multiple analyses to coexist in drafts/tmp/
Output: Analysis file at drafts/tmp/{block-name}-analysis.md
Task-Specific Analysis Guidance
Building a new block
Must analyze:
- •Author inputs (list what content authors will provide: e.g., "image, title, description, link")
- •What's required vs optional?
- •What can be inferred or auto-generated?
- •What variations do we need to support?
- •Styling and layout expectations
- •Interactive behavior requirements
- •Responsive behavior across viewports
DON'T design at this stage:
- •❌ Table structure (how many columns/rows)
- •❌ Cell layout (which content goes in which cell)
- •❌ Block variant classes or naming
- •❌ Exact authoring format or field names
- •❌ Authoring experience or ease-of-use (always the goal, addressed in Step 3)
Note: At this stage, focus on WHAT content is needed, not HOW it's structured. Detailed content model design (table structure, cells, variants, authoring UX) happens in the content-modeling skill (CDD Step 3).
Acceptance criteria should cover:
- •Styling and layout match requirements across viewports
- •All variations work
- •Interactive behavior functions as expected
Adding a Variant to an Existing Block
Must analyze:
- •What does the variant do?
- •How does author enable it? (class name? content marker?)
- •Style-only (CSS) or behavior change (JS)?
- •Styling/layout changes for variant
- •Responsive considerations
Acceptance criteria should cover:
- •Variant styling/layout matches requirements across viewports
- •Variant applies correctly when specified
- •Existing variants/default behavior continue to function as is
Modify Existing Block Behavior
Must analyze:
- •What behavior is changing and why?
- •Any impact to existing content using this block?
- •Content/authoring implications of the change (what content needs to be updated and how)?
- •JS and/or CSS changes needed?
- •Responsive implications?
Acceptance criteria should cover:
- •New behavior works as expected
- •Existing functionality is not broken (regression check)
- •Works across viewports
- •Existing content still works
CSS-Only Styling Change
Must analyze:
- •What's changing visually
- •Which viewports are affected
- •Layout implications
Acceptance criteria should cover:
- •Styling/layout changes match requirements across viewports
- •No layout breaks
- •No regressions
Bug Fix
Must analyze:
- •What is the bug?
- •What should happen instead?
- •Root cause (if not obvious)
Acceptance criteria should cover:
- •Bug no longer occurs
- •No regressions (existing behavior unchanged)
- •Works across viewports, if relevant
Success Criteria
- •✅ Task type identified (new block, variant, modification, etc.)
- •✅ Requirements analyzed using appropriate guidance
- •✅ Acceptance criteria defined
- •✅ Analysis documented to markdown file
- •✅ Visual analysis completed (if applicable)
Output
This skill provides:
- •✅ Clear understanding of what to build
- •✅ Documented requirements
- •✅ Specific acceptance criteria for validation
- •✅ Analysis notes file for reference
Next step: Return to CDD Step 2 with documented analysis and acceptance criteria
Resources
- •Visual Analysis:
resources/visual-analysis.md- Comprehensive guide for analyzing screenshots, design files, and existing URLs. Includes systematic analysis techniques, documentation templates, and implementation mapping.