Excel Data Helper — Data Quality Diagnosis & Chart Skill

Local Excel/CSV data profiling, quality scanning (20+ modules, 6-dimension scoring, LLM semantic analysis), and chart generation. International locale support: CJK, European, Middle Eastern, Americas.

Supported files: .csv .tsv .xlsx .xls

Trigger & Menu

When a supported file is detected, do not auto-process — present this menu first (adapt to the user's language):

📊 Excel Data Helper — Hi, I noticed you shared a data file: <filename>

| # | Action | Description | |:---:|--------|-------------| | 1 | Quality Check | Overview, scan, scoring | | 2 | Chart | Any ECharts type: bar, line, pie, scatter, radar, heatmap… | | 3 | Advanced Chart | Dashboard, Gantt, PPT, diagrams | | 0 | Skip | Do nothing for now |

Reply 0–3, or describe what you need.

Routing & Context

Match user intent and route to the corresponding sub-skill:

IF user replies 1, or intent is overview / quality check / diagnose / score / problems → follow references/quality-check.md
IF user replies 2, or intent is chart / plot / visualize / graph → follow references/chart.md
IF user replies 3, or intent is dashboard / Gantt / PPT / diagram / complex layout → follow references/advanced-chart.md
IF user replies 0, or intent is skip / later / not now → do nothing, reply: "Got it — file noted. Just let me know when you're ready."
IF intent is ambiguous or unrelated → ask to clarify, never guess.

Context:

Short replies (number, "yes", "ok") always refer to the most recent menu or question.
After Skip (0), context resets — ignore the file unless user re-references it.
Multiple files — each needs its own explicit choice.

Setup

Before first use, install dependencies (one-time):

cd <skill_directory>
npm install

This installs xlsx (SheetJS), echarts, and sharp. All analysis and chart rendering runs locally.

Rules

Respond in the user's language.
Never auto-process a file — wait for explicit choice.
Parse tool JSON output; present results in clear, readable format — never expose raw JSON.
Use absolute file paths from tool output directly for follow-up operations.
Always include "Excel Data Helper" in the menu header.