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Agent skill

Lens Chart

by jeremylongshore in jeremylongshore/tons-of-skills-marketplace

A skill your agent uses when asked to select chart types for analytics dashboards, choose BI visualizations, or design data displays.

MITAuto-check: notesData & Analytics

Install Lens Chart

skills CLI
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill lens-chart -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install jeremylongshore/tons-of-skills-marketplace lens-chart --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/ai-agency/tonone/skills/lens-chart .claude/skills/lens-chart && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
lens-chart
GitHub stars
2.8k
Token cost
~652 tokens
SKILL.md length
176 words
Files
2
Skills in repo
3,342
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when asked to select chart types for analytics dashboards, choose BI visualizations, or design data displays.

  • Works in 5 steps: Identify data type and BI context from… → Search chart knowledge base → Search style for BI context → …
  • Asked to select chart types for analytics dashboards
  • SKILL.md covers When to use, Workflow, Output format and Anti-patterns, plus 1 more section
  • Calls python3

What it does

Lens Chart is an agent skill from jeremylongshore/tons-of-skills-marketplace. Use when asked to select chart types for analytics dashboards, choose BI visualizations, or design data displays. Examples: "best chart for sales data", "dashboard visualization for metrics", "analytics chart selection"

Its SKILL.md is about 650 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `.claude-plugin/plugin.json`).

It sits in Data & Analytics. The repository describes itself as: Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com. The licence is MIT.

When your agent uses it

  • Asked to select chart types for analytics dashboards
  • Choose BI visualizations
  • Design data displays

Example prompts

  • “best chart for sales data”
  • “dashboard visualization for metrics”
  • “analytics chart selection”
  • “/lens-chart”

Requirements

  • Python 3
  • Pre-approved tools (allowed-tools): Read, Bash, Glob, Grep

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Identify data type and BI context from user request (sales trends, cohort analysis, funnel, KPI comparison, etc.)
  2. Search chart knowledge base
  3. Search style for BI context
  4. Evaluate for BI requirements: data density, drill-down capability, real-time support, library recommendation
  5. Output optimized for decision-making, not decoration

What it can do on your machine

Read from SKILL.md and the folder at commit cfae287. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Bash
    • Glob
    • Grep

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • python3

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Lens Chart loads about 652 tokens when it runs. Until then it costs about 58 tokens; SKILL.md has 176 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~58
When it runs · the whole SKILL.md, loaded when a task matches
~652

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
    allowed-tools: Read, Bash, Glob, Grep

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 176 words, ~652 tokens.

Download SKILL.mdSave it as .claude/skills/lens-chart/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
lens-chart
description
Use when asked to select chart types for analytics dashboards, choose BI visualizations, or design data displays. Examples: "best chart for sales data", "dashboard visualization for metrics", "analytics chart selection"
allowed-tools
Read, Bash, Glob, Grep
version
0.6.6
author
tonone-ai <hello@tonone.ai>
license
MIT

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

  1. Identify data type and BI context from user request (sales trends, cohort analysis, funnel, KPI comparison, etc.)
  2. Search chart knowledge base:
    bash
    python3 -m lens_agent.uiux search --domain chart --query "{data_type}" --limit 3
  3. Search style for BI context:
    bash
    python3 -m lens_agent.uiux search --domain style --query "{context}" --limit 2
  4. Evaluate for BI requirements: data density, drill-down capability, real-time support, library recommendation
  5. 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.

© jeremylongshore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file in plugins/ai-agency/tonone/skills/lens-chart of jeremylongshore/tons-of-skills-marketplace.

  • SKILL.md
  • .claude-plugin/plugin.json

Open the folder on GitHubat commit cfae287

Compare with similar skills

Lens Chart next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Lens Chart compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Lens Chart this skilljeremylongshore/tons-of-skills-marketplace2.8k—~652Automated safety check: NotesMIT
MatplotlibzLanqing/codex-claude-academic-skills4.7k17 repos~2.9kAutomated safety check: PassMIT
Exploratory Data Analysisspacering-net/codeg3.9k14 repos~3.6kAutomated safety check: PassMIT
Scikit LearnzLanqing/codex-claude-academic-skills4.7k16 repos~3.9kAutomated safety check: PassBSD-3-Clause
Chart Visualizationbytedance/deer-flow84k1 repos~840Automated safety check: PassMIT
TimesFM Forecastinggoogle-research/timesfm34k—~4.7kAutomated safety check: PassApache-2.0

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Categories

Questions about Lens Chart

What does Lens Chart do?

A skill your agent uses when asked to select chart types for analytics dashboards, choose BI visualizations, or design data displays. Lens Chart is an agent skill from jeremylongshore/tons-of-skills-marketplace. Use when asked to select chart types for analytics dashboards, choose BI visualizations, or design data displays.

When should I use Lens Chart?

Lens Chart fits situations like: asked to select chart types for analytics dashboards; choose BI visualizations; design data displays.

How do I install Lens Chart in Claude Code?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill lens-chart -a claude-code`. Or copy the skill folder (plugins/ai-agency/tonone/skills/lens-chart in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/lens-chart in your project. Claude Code loads it when a task matches its description.

How do I install Lens Chart in Codex?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill lens-chart -a codex`. Or copy the skill folder (plugins/ai-agency/tonone/skills/lens-chart in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/lens-chart in your project. Codex loads it when a task matches its description.

Can I use Lens Chart in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill lens-chart -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/lens-chart, .gemini/skills/lens-chart, .github/skills/lens-chart and .opencode/skills/lens-chart in your project.

What does Lens Chart need to run?

Going by SKILL.md and its folder, Lens Chart needs the command-line tools its instructions call (python3). Our summary lists: Python 3. Its frontmatter pre-approves these tools: Read, Bash, Glob, Grep.

Does Lens Chart access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Lens Chart safe to install?

Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Lens Chart use?

Lens Chart is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Lens Chart use?

About 652 tokens (SKILL.md is roughly 2.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Lens Chart?

Skills that share tags, products or a category with Lens Chart: Matplotlib (zLanqing/codex-claude-academic-skills, 4.7k stars), Exploratory Data Analysis (spacering-net/codeg, 3.9k stars), Scikit Learn (zLanqing/codex-claude-academic-skills, 4.7k stars) and Chart Visualization (bytedance/deer-flow, 84k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Lens Chart?

jeremylongshore (a GitHub user) maintains it in jeremylongshore/tons-of-skills-marketplace, which has 2,827 GitHub stars. The repository holds 3,342 skills in this directory. The repository was last updated on October 10, 2026.

Source: jeremylongshore/tons-of-skills-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.