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visualization

visualization is a skill for Claude Code from fledgeling-co/fledgeling-plugins. It costs 294 tokens per session (5,604 once invoked), scanned A, original, MIT.

A diagram and chart workflow for explaining structures, processes, relationships, timelines, and measured data in self-contained HTML files.

In plain words
What is it for?
Use it to create architecture diagrams, flowcharts, timelines, dependency views, and quantitative charts with inline SVG.
Why use it?
It gives readers a visual way to understand complex systems and applies checks for chart accuracy, accessibility, and color use.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python3 scripts/validate_palette.py "<hex,hex,...>" --mode light.

Part of the visualization plugin — 1 skill shipped together

not rated 2repo changed 1mo ago A scan 294 tokens original MIT

Good fit Use it to create architecture diagrams, flowcharts, timelines, dependency views, and quantitative charts with inline SVG.

Compare 6 skills from other repositories ↓
View source ↗ fledgeling-co/fledgeling-plugins skills.fledgeling.app
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/fledgeling-co/fledgeling-plugins
agentmods
npx agentmods add skills/fledgeling-co/fledgeling-plugins/visualization

Made for: Claude Code.

Or install visualization, the plugin that ships this one along with the rest of its 1 skill.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for visualization

README.md
[![agentmods](https://agentmods.dev/badge/skills/fledgeling-co/fledgeling-plugins/visualization/github.svg)](https://agentmods.dev/skills/fledgeling-co/fledgeling-plugins/visualization)
Your own site
<a href="https://agentmods.dev/skills/fledgeling-co/fledgeling-plugins/visualization"><img src="https://agentmods.dev/badge/skills/fledgeling-co/fledgeling-plugins/visualization/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for visualization

Your own site · 80×15
<a href="https://agentmods.dev/skills/fledgeling-co/fledgeling-plugins/visualization"><img src="https://agentmods.dev/badge/skills/fledgeling-co/fledgeling-plugins/visualization.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 294 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,604 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00294 $0.05604
Opus 5.5 $0.00118 $0.02242
Sonnet 5.5 $0.00059 $0.01121
Haiku 4.5 $0.00029 $0.00560

Measured 1mo ago against content hash 60a04efe3e23, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

visualization scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/visualization/skills/visualization/SKILL.md · 399 lines

How it starts

The opening of the file, as written. The whole thing — 399 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Visualization

Charts and diagrams as single-file HTML with inline SVG, in one opinionated editorial system. Fifty-three forms. Details load from references/ only when selected.

Two families, one spine. Diagrams show structure and behaviour, and the reader traces relationships. Charts show quantities, and the reader compares values — which makes every chart encoding a claim about numbers, so charts carry honesty rules and a colour gate that diagrams do not.

For utility requests, load only the matching reference and perform that workflow: diagnostics, PNG/SVG export, brand onboarding, saved profiles, draw.io import, or Mermaid import. All use the single visualization:visualization entrypoint; pass the operation and source path as skill arguments. Diagnostics, exports and profile operations do not run the first-visual style gate. Resolve bundled scripts/ paths relative to this SKILL.md, not the caller's working directory.

0. First run — the style guide gate

Before the first visual in a new project, check whether the skin has been customised. Don't silently ship default-skinned output into a branded project.

Check the project root for a .diagram-design marker and resolve it per references/profiles.md. A valid marker whose profile exists selects that file and skips this gate; profile: default also skips it.

If the user already supplied a style, profile or tokens, apply that decision without asking again. In an autonomous handoff, use the provided project style or state the default assumption and proceed. Otherwise open references/style-guide.md. If the tokens are still the shipped defaults (paper #f5f5f5, ink #2d3142, accent #eb6c36), pause and ask:

"First visual in this project. The style guide is still the default (white-smoke paper, atomic-tangerine accent). Customise it first? (a) pull from your website URL, (b) extract from an installed skill, (c) extract from a local design-system folder, (d) paste tokens, (e) proceed with the default, (f) load a saved client profile."

Read the full file on GitHub · 399 lines

Files

What ships with it

60 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago Changed · +5 lines 60a04efe3e23
  2. 1mo ago First seen · 394 lines · 294 tokens per session scan A e83af8545789

Subscribe to this mod's changes

visualization is a skill published in the GitHub repository fledgeling-co/fledgeling-plugins (2 stars, last pushed 4d ago), licensed MIT. It adds 294 tokens to every session and 5,604 once invoked, about $0.0012 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-04.

Creative and mediaData and AI
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