A skill for creating high-fidelity interactive HTML design mockups that can be viewed in a live preview.

Use it to build interactive design mockups in HTML and display them in the live preview panel. Existing reusable HTML files can also be previewed when their related assets are declared.

It lets you review and interact with a proposed interface before it is implemented as a finished product.

How G-Research/bobbit configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to G-Research/bobbit. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/G-Research/bobbit/main/.claude/skills/mockup/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/G-Research/bobbit

Made for: Claude Code.

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/g-research/bobbit/mockup/github.svg)](https://agentmods.dev/skills/g-research/bobbit/mockup)

Your own site

<a href="https://agentmods.dev/skills/g-research/bobbit/mockup"><img src="https://agentmods.dev/badge/skills/g-research/bobbit/mockup/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/g-research/bobbit/mockup"><img src="https://agentmods.dev/badge/skills/g-research/bobbit/mockup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 204 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.

Model	Per session	Once invoked
Fable 5.1	$0.00016	$0.00204
Opus 5.5	$0.00006	$0.00082
Sonnet 5.5	$0.00003	$0.00041
Haiku 4.5	$0.00002	$0.00020

Measured 2mo ago against content hash 8dbddb8fec2c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mockup 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 2mo 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.

.claude/skills/mockup/SKILL.md · 19 lines

What it actually says

Design Mockup

You are creating a high-fidelity interactive HTML design mockup for: $ARGUMENTS

Use the live preview panel by default with preview_open(html=...). Repeated identical preview content may dedupe by content hash and select/update the existing live preview tab; change the content when a distinct restorable mockup is needed.

Use file-backed previews only for existing or reusable HTML artifacts: call preview_open(file="/absolute/path/to/file.html") and declare sibling assets with assets or manifest. Do not write and preview the same mockup through both the inline file-render surface and the live preview surface.

Follow the full design mockup guide below.

@docs/design-mockups.md

Files

What ships with it

1 file 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.

docs/design-mockups.md 6.0 KB

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.

2mo ago First seen · 19 lines · 16 tokens per session scan A 8dbddb8fec2c

Subscribe to this mod's changes

mockup is a skill published in the GitHub repository G-Research/bobbit (18 stars, last pushed 1mo ago), licensed MIT. It adds 16 tokens to every session and 204 once invoked, about $0.0001 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 2026-08-30.

Design and UX

mockup next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
mockupG-Research/bobbit	Skill	18	1mo ago	MIT	A	16	Claude Code
webgl-holographic-foilnexu-io/open-design	Skill	106k	yesterday	Apache-2.0	A	41	Claude Code, Codex
html-ppt-hermes-cyber-terminalnexu-io/open-design	Skill	106k	yesterday	Apache-2.0	A	53	Claude Code, Codex
html-ppt-taste-brutalistnexu-io/open-design	Skill	106k	yesterday	Apache-2.0	A	78	Claude Code, Codex
visual-ralphYeachan-Heo/oh-my-codex	Skill	34k	3d ago	MIT	A	52	Codex
glance-canonical-layoutsandroid/skills	Skill	10k	yesterday	Apache-2.0	A	56	Claude Code
accessibilitymicrosoft/hve-core	Skill	1.6k	yesterday	MIT	A	47	Claude Code

bobbit: Skill for Claude Code