tonone-ai lens-chart — BI & Analytics Chart Selection
Follow the output format defined in docs/output-kit.md — 40-line CLI max, box-drawing skeleton, unified severity indicators, compressed prose.
When to use
User needs chart type selection or visualization recommendations for analytics dashboards or BI contexts.
Workflow
- Identify data type and BI context from user request (sales trends, cohort analysis, funnel, KPI comparison, etc.)
- Search chart knowledge base:
python3 -m lens_agent.uiux search --domain chart --query "{data_type}" --limit 3 - Search style for BI context:
python3 -m lens_agent.uiux search --domain style --query "{context}" --limit 2 - Evaluate for BI requirements: data density, drill-down capability, real-time support, library recommendation
- Output optimized for decision-making, not decoration
Output format
┌─ BI Chart Recommendation — {data_type} ─────────────────────────────┐
│ Chart type: {chart_type} │
│ Library: {library} │
│ Data density: {density} (low / medium / high) │
│ Drill-down: {drill_down} (yes / no / limited) │
│ Real-time support: {real_time} (yes / no) │
│ Accessibility: {grade} │
├─ Decision test ─────────────────────────────────────────────────────┤
│ "Does this answer a decision?" → {yes_no}: {rationale} │
└──────────────────────────────────────────────────────────────────────┘
Anti-patterns
- Never choose decorative over data-dense visualizations for BI contexts
- Never skip the "does this answer a decision?" test — every chart must justify its inclusion
- Never skip accessibility fallback for charts graded below AA
- Never recommend real-time charts without confirming the data pipeline supports streaming
Delivery
If output exceeds the 40-line CLI budget, invoke /atlas-report with the full findings. The HTML report is the output. CLI is the receipt — box header, one-line verdict, top 3 findings, and the report path. Never dump analysis to CLI.