Borrowing it
Nothing to install: this file belongs to recomposesh/recompose. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/recomposesh/recompose/main/.claude/skills/pencil/SKILL.mdgit clone --depth 1 https://github.com/recomposesh/recomposeWrote 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.
[](https://agentmods.dev/skills/recomposesh/recompose/pencil)<a href="https://agentmods.dev/skills/recomposesh/recompose/pencil"><img src="https://agentmods.dev/badge/skills/recomposesh/recompose/pencil.svg" alt="Measured on agentmods" height="20"></a>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 5.1 | $0.00154 | $0.02119 |
| Opus 5 | $0.00077 | $0.01059 |
| Sonnet 5 | $0.00031 | $0.00424 |
| Haiku 4.5 | $0.00015 | $0.00212 |
Grade A, and why
pen-design scanned grade A with 1 finding 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.
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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -fsSL "https://unpkg.com/@pen.dev/cli@latest/SKILL.md" -o .cursor/skills/pen-design/SKILL.md How it starts
The opening of the file, as written. The whole thing — 176 lines — stays where its author put it; the contents beside it link to each section on GitHub.
pen.dev Design
Create professional visual designs from natural language descriptions using the pen.dev CLI. pen.dev is a headless design tool that generates .pen files (a structured JSON design format) and can export them as images.
Setup
Before designing, make sure the pen.dev CLI is available.
Check installation
which pen || npx pen version
If pen is not found, install it:
npm install -g @pen.dev/cli
If global install fails due to permissions, install locally instead:
npm install @pen.dev/cli
Then run it via npx pen (or ./node_modules/.bin/pen) instead of pen.
You can learn about the available commands via the pen --help command.
Authentication
pen.dev user
To use the CLI, an authenticated user logged in to pen.dev is required. First, check
the current user configuration on the machine with the pen status command.
If not logged in, there are the following options:
- use
pen signup --email [email protected] --username johndoe --name "John Doe"command, to create a new user. - use
pen login --email [email protected] [--code abc123]to authenticate an existing or newly created user. - optionally, the
PEN_CLI_KEYenv var can also be used for authentication if its set in your session.
Claude Code agent
The CLI needs auth to run its AI agent for which Claude Code is required. For that there needs to be an authenticated Claude Code user set in the system configuration either via env var or a user subscription.
If none of these are available, tell the user what options they have and help them set one up.
Staying up to date
This skill stays in sync with the pen.dev CLI npm package (@pen.dev/cli). The published package includes SKILL.md at its root; the package version is the skill version.
Check for a newer CLI / skill
- Latest version on the registry:
npm view @pen.dev/cli version - Installed CLI:
pen version, ornpm list -g @pen.dev/cli(global) /npm list @pen.dev/cli(project)
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 · 176 lines · 154 tokens per session scan A 8abf6443146f
pen-design is a skill published in the GitHub repository recomposesh/recompose (27 stars, last pushed 10d ago), licensed MIT. It adds 154 tokens to every session and 2,119 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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