A lightweight way to create two or three interactive HTML mockups of a screen or interface before building the final version.

Use it to explore a screen, compare layout ideas, or see several versions of a user interface before committing to one design.

It helps you compare different layouts and visual directions early, when changes are still quick and inexpensive. The mockups are disposable and are not intended as production code.

sketch — Skill for Claude Code and Codex by humanerd-drew: A lightweight way to create two or three interactive…

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/humanerd-drew/opencode-drewgent/sketch

Any agent

npx skills add humanerd-drew/opencode-drewgent --skill sketch

Clone the repo

git clone --depth 1 https://github.com/humanerd-drew/opencode-drewgent

Made for: Claude Code, Codex.

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/humanerd-drew/opencode-drewgent/sketch.svg)](https://agentmods.dev/skills/humanerd-drew/opencode-drewgent/sketch)

Your own site

<a href="https://agentmods.dev/skills/humanerd-drew/opencode-drewgent/sketch"><img src="https://agentmods.dev/badge/skills/humanerd-drew/opencode-drewgent/sketch.svg" alt="Measured on agentmods" height="20"></a>

Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,337 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

Origin 86% copy Near-identical to another mod 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	$0.00018	$0.02337
Opus 5	$0.00009	$0.01169
Sonnet 5	$0.00004	$0.00467
Haiku 4.5	$0.00002	$0.00234

Measured 3d ago against content hash cf4b263fc25b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

sketch 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.

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.

Origin

This is a copy

86% identical to sketch — 15 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/creative/sketch/SKILL.md · 226 lines

How it starts

The opening of the file, as written. The whole thing — 226 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Sketch

Use this skill when the user wants to see a design direction before committing to one — exploring a UI/UX idea as disposable HTML mockups. The point is to generate 2-3 interactive variants so the user can compare visual directions side-by-side, not to produce shippable code.

Load this when the user says things like "sketch this screen", "show me what X could look like", "compare layout A vs B", "give me 2-3 takes on this UI", "let me see some variants", "mockup this before I build".

When NOT to use this

User wants a production component — use claude-design or build it properly
User wants a polished one-off HTML artifact (landing page, deck) — claude-design
User wants a diagram — excalidraw, architecture-diagram
The design is already locked — just build it

If the user has the full GSD system installed

If gsd-sketch shows up as a sibling skill (installed via npx get-shit-done-cc --hermes), prefer gsd-sketch for the full workflow: persistent .planning/sketches/ with MANIFEST, frontier mode analysis, consistency audits across past sketches, and integration with the rest of GSD. This skill is the lightweight standalone version — one-off sketching without the state machinery.

Core method

intake  →  variants  →  head-to-head  →  pick winner (or iterate)

1. Intake (skip if the user already gave you enough)

Before generating variants, get three things — one question at a time, not all at once:

Feel. "What should this feel like? Adjectives, emotions, a vibe." — "calm, editorial, like Linear" tells you more than "minimal".
References. "What apps, sites, or products capture the feel you're imagining?" — actual references beat abstract descriptions.
Core action. "What's the single most important thing a user does on this screen?" — the variants should all serve this well; if they don't, they're just decoration.

Reflect each answer briefly before the next question. If the user already gave you all three upfront, skip straight to variants.

Read the full file on GitHub · 226 lines

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 · 226 lines · 18 tokens per session scan A cf4b263fc25b

Subscribe to this mod's changes

sketch is a skill published in the GitHub repository humanerd-drew/opencode-drewgent (2 stars, last pushed 1mo ago), licensed MIT. It adds 18 tokens to every session and 2,337 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 86% identical to sketch, differing in 15 lines, and is treated as a copy.

Design and UX

material-ui-tailwind

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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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sketch