A tool that turns plans, analyses, prototypes, comparisons, or creative ideas into interactive web pages. It opens the page in a browser and watches for choices, toggles, and comments.

Presenting interactive plans, design concepts, prototypes, analyses, and comparisons, then feeding the user's selections or comments back into the workflow.

It gives people a visual way to review work and make decisions instead of relying only on text conversations. Their interactions can then guide the next version.

concept — Skill for Claude Code and Codex by Jerry0022: A tool that turns plans, analyses, prototypes, comparisons, or…

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/jerry0022/dotclaude/concept

Any agent

npx skills add Jerry0022/dotclaude --skill concept

Clone the repo

git clone --depth 1 https://github.com/Jerry0022/dotclaude

Made for: Claude Code, Codex.

Or install devops, the plugin that ships this one along with the rest of its 23 skills, 12 agents, 5 hooks, 3 MCP servers.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/jerry0022/dotclaude/concept.svg)](https://agentmods.dev/skills/jerry0022/dotclaude/concept)

Your own site

<a href="https://agentmods.dev/skills/jerry0022/dotclaude/concept"><img src="https://agentmods.dev/badge/skills/jerry0022/dotclaude/concept.svg" alt="Measured on agentmods" height="20"></a>

Per session 124 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 17,813 The whole file, excluding the scripts and references it only reads on demand.

Security scan C 2 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	$0.00124	$0.17813
Opus 5	$0.00062	$0.08906
Sonnet 5	$0.00025	$0.03563
Haiku 4.5	$0.00012	$0.01781

Measured 3d ago against content hash d9a3cfbfe174, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

concept scanned grade C with 2 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 6 executable files (bridge-durability.test.js, final-report-wizard.test.js, monitoring-contract.test.js, …), 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

| `discard` | `rm -rf -- ".claude/concepts/{date}-{slug}"` — journal and attachments go with the concept. Subject to the UNPROCESSED guard below. |

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

allowed-tools: Read, Write, Glob, Grep, Bash(start *), Bash(cmd *), Bash(python *), Bash(curl *), Bash(kill *), Bash(node *), AskUserQuestion, CronCreate, CronDelete, mcp__Claude_Preview__*, mcp__plugin_playwright_playwr

plugins/devops/skills/concept/SKILL.md · 1,355 lines

How it starts

The opening of the file, as written. The whole thing — 1,355 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Concept

Generate an interactive HTML page for $ARGUMENTS, open it in the browser, and monitor for user decisions.

Step 0 — Load Extensions

Check for optional overrides. Use Glob to verify each path exists before reading. Do NOT call Read on files that may not exist — skip missing files silently (no output).

Global: ~/.claude/skills/concept/SKILL.md + reference.md
Project: {project}/.claude/skills/concept/SKILL.md + reference.md
Merge: project > global > plugin defaults

Step 1 — Pick Template, then Content Variant

1a. Pick the template — per iteration

A concept page is a stack of iterations, and each iteration independently picks its own layout template — decision, free, or design. This check runs every time an iteration is created (the first one, and every one appended later via tune/rethink/iterate) — it is NOT a one-time, page-level decision. Iteration 1 may be a decision round, iteration 2 a fullscreen design round, iteration 3 a decision round again; nothing forces the page to stay on one template throughout.

Pick via the strict ordered check below — first matching template wins, free is the explicit fallback when neither of the first two applies. Do NOT skip the order; free must never be chosen while design or decision would also fit.

Order of evaluation (mandatory, per iteration):

Is this iteration primarily VISUAL? The options this iteration puts up for decision are primarily visual — layouts, design directions, screen composition, visual arrangement, a click-through flow, screen-by-screen UI design, any "design me / sketch / lay out a UI" task. If the output needs maximum viewport real estate and per-screen (and, with 2+ competing designs, per-design) feedback → design. Stop.

design is almost always a click-dummy. If a design has 2+ screens, the mockup's own buttons/links MUST be wired to navigate between screens (not just styled rectangles) — clicking "Continue" on screen 1 lands on screen 2, "Back" returns, etc. See deep-knowledge/templates.md § Template: design for the data-screen-link attribute pattern.

Read the full file on GitHub · 1,355 lines

Files

What ships with it

14 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 · 1,355 lines · 124 tokens per session scan C d9a3cfbfe174

Subscribe to this mod's changes

concept is a skill published in the GitHub repository Jerry0022/dotclaude (4 stars, last pushed 4d ago), licensed MIT. It adds 124 tokens to every session and 17,813 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it C with 2 findings (recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Design and UX Planning

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mui/material-ui · 67 tokens

hallmark

Anti-AI-slop design skill for greenfield pages, audits, redesigns, and design extraction from URLs or screenshots. Use when the user asks to build a new app or landing page, wants to redesign something, invokes Hallmark by name, or uses audit/redesign/study.

Nutlope/hallmark · 61 tokens

read

Reads URLs and PDFs by fetching source content, defaulting to concise summaries for plain read requests and clean Markdown when asked to convert, save, quote, cite, or feed downstream work. Use when users ask in any language to read, fetch, check, summarize, quote, cite, convert, or save a URL or PDF. Not for local…

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concept