A tool for creating or reviewing visual explanations such as diagrams, charts, illustrations, mockups, and interactive widgets. It chooses a visual format based on what needs to be explained.

It is for drawing flowcharts, architecture diagrams, relationship diagrams, charts, UI mockups, interactive explanations, and illustrations.

It helps turn processes, relationships, data, or interface ideas into visuals that are easier to understand than text alone.

show — Skill for Claude Code and Codex by jl-cmd: A tool for creating or reviewing visual explanations such…

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods

npx agentmods add skills/jl-cmd/claude-dev-env/show

Any agent

npx skills add jl-cmd/claude-dev-env --skill show

Clone the repo

git clone --depth 1 https://github.com/jl-cmd/claude-dev-env

Made for: Claude Code, Codex.

Or install claude-dev-env, the plugin that ships this one along with the rest of its 45 skills, 9 agents, 1 hook.

Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 484 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

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.

Model	Per session	Once invoked
Fable 5	$0.00066	$0.00484
Opus 5	$0.00033	$0.00242
Sonnet 5	$0.00013	$0.00097
Haiku 4.5	$0.00007	$0.00048

Measured 3d ago against content hash d416b4f37502, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

show 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 3d ago.

The scan reads SKILL.md. This mod also ships 4 executable files (scripts/validate-artifact.py, scripts/validate-package.py, tests/test_validate-artifact.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

packages/claude-dev-env/.agents/skills-archived/show/SKILL.md · 52 lines

What it actually says

Show

Use this skill when a user asks to show, draw, map, visualize, explain visually, or build an interactive visual.

Routes

Pick the row whose intent matches the request, then follow workflows/create-visual.md.

Intent	Route
Steps, decisions, lifecycle, transformation	`flowchart`
Architecture, containment, hierarchy	`structural`
Mechanism, intuition, spatial metaphor	`illustrative`
Entity or class relationships	`erd`
Controls that change a visual explanation	`interactive`
UI surface, form, card, dashboard	`mockup`
Quantitative or geographic data	`chart`
Illustration or generative art	`art`

Each route's references and template live in routing.yaml; the template sets the output type.

Invariants

Design, palette, and color meaning follow references/core-design.md.
SVG output follows references/svg-contract.md; HTML output follows references/host-and-html.md.
Prefer multiple focused visuals over one dense canvas, and keep explanatory prose outside the visual.
Keep one diagram family per visual.
When the visual shows code, a diff, or a plan that lives in a repo, read the real lines and tie every arrow to a path:line citation before drawing. When the picture and the source disagree, the picture is wrong.
samples/ holds good examples the user has picked out. Read them on demand to study what works; the rules stay in the references.

Workflows

New visual: workflows/create-visual.md
Review or repair: workflows/review-visual.md

Validation

Run from any working directory:

python <skill-root>/scripts/validate-package.py
python <skill-root>/scripts/validate-artifact.py <artifact>

The package is complete only when package checks, artifact checks, and rendered inspection all pass.

Files

What ships with it

33 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.

3d ago First seen · 52 lines · 66 tokens per session scan A d416b4f37502

Subscribe to this mod's changes

show is a skill published in the GitHub repository jl-cmd/claude-dev-env (6 stars, last pushed 3d ago), licensed MIT. It adds 66 tokens to every session and 484 once invoked, about $0.0003 per session on Opus 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 2026-08-31.

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