Agent-Skills.md

Agent Skills: Generate sparkline from JSON data

Generate ASCII mini charts (sparkline/bar/simple line) for plain-text trend inspection, with minimal and annotated variants and normalization notes. Use when the user needs text-based data visualization, terminal charts, or ASCII graphs for CLI output.

UncategorizedID: teachingai/full-stack-skills/ascii-mini-charts

Repository

teachingai/full-stack-skills
partme-aiLicense: NOASSERTION
20635

Install this agent skill to your local

pnpm dlx add-skill https://github.com/partme-ai/full-stack-skills/tree/HEAD/skills/ascii-skills/ascii-mini-charts

Skill Files

Browse the full folder contents for ascii-mini-charts.

Download Skill

Loading file tree…

skills/ascii-skills/ascii-mini-charts/SKILL.md

Skill Metadata

Name
ascii-mini-charts
Description
"Generate ASCII mini charts (sparkline/bar/simple line) for plain-text trend inspection, with minimal and annotated variants and normalization notes. Use when the user needs text-based data visualization, terminal charts, or ASCII graphs for CLI output."

When to use this skill

CRITICAL TRIGGER RULE

  • Use this skill ONLY when the user explicitly mentions the exact skill name: ascii-mini-charts.

Trigger phrases include:

  • "ascii-mini-charts"
  • "use ascii-mini-charts"
  • "用 ascii-mini-charts 生成 sparkline / 火花线"
  • "使用 ascii-mini-charts 标注 min/max/current"

Boundary

  • No statistical inference. Visualization only.
  • Default output is ASCII-only. Unicode blocks are optional and MUST include an ASCII-only fallback.
  • Default output width should stay <= 60 columns. For longer series, provide a compression strategy (sampling/bucketing).

How to use this skill

Inputs

  • series (required numeric list)
  • type (sparkline | bar | line, default sparkline)
  • width (default min(len(series), 30))
  • height (default 10 for bar/line)
  • normalize (linear | log, default linear)
  • showLabels (default true)

Outputs (required)

  • chartMinimal
  • chartAnnotated (with min/max/current)
  • scaleNotes (normalization + outlier strategy)

Inline Example

Input: series=[3, 7, 2, 9, 5, 8, 1, 6], type=sparkline:

chartMinimal:

▂▅▁▇▃▆ ▄

chartAnnotated:

▂▅▁▇▃▆ ▄  min:1 max:9 current:6

Input: series=[10, 25, 15, 30], type=bar, height=5:

chartAnnotated:

     ##
  ## ##
  ## ##
  ## ## ##
## ## ## ##
10 25 15 30

Script Usage

# Generate sparkline from JSON data
echo '{"series": [3, 7, 2, 9, 5, 8, 1, 6], "type": "sparkline"}' | python3 scripts/mini_charts.py

# Generate bar chart with annotations
echo '{"series": [10, 25, 15, 30], "type": "bar", "height": 5, "showLabels": true}' | python3 scripts/mini_charts.py

Script

  • scripts/mini_charts.py: generate ASCII mini charts from JSON stdin

Examples

  • examples/sparkline.md

Quality checklist

  1. Trend is clear; labels are short and non-spammy
  2. ASCII-only output copy/pastes cleanly
  3. Provide a compression strategy for long series

Keywords

English: ascii-mini-charts, sparkline, ascii chart, bar chart, line chart, trend, normalize 中文: ascii-mini-charts, 火花线, ASCII 图表, 柱状图, 折线图, 趋势, 归一化