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.
npx skills add Peiiii/nextclaw --skill nextclaw-skin-studiogit clone --depth 1 https://github.com/Peiiii/nextclawWrote 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/peiiii/nextclaw/nextclaw-skin-studio)<a href="https://agentmods.dev/skills/peiiii/nextclaw/nextclaw-skin-studio"><img src="https://agentmods.dev/badge/skills/peiiii/nextclaw/nextclaw-skin-studio/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.
<a href="https://agentmods.dev/skills/peiiii/nextclaw/nextclaw-skin-studio"><img src="https://agentmods.dev/badge/skills/peiiii/nextclaw/nextclaw-skin-studio.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00115 | $0.01661 |
| Opus 5 | $0.00057 | $0.00830 |
| Sonnet 5 | $0.00023 | $0.00332 |
| Haiku 4.5 | $0.00012 | $0.00166 |
Grade A, and why
nextclaw-skin-studio 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 7d 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.
How it starts
The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.
NextClaw Skin Studio
Use scripts/skin.mjs from this skill directory. It owns one unsupported ui-inject.js file and does not add a skin system to the NextClaw product core.
The shared renderer is an external design-system runtime, not a wallpaper switcher. It applies tokens, semantic surfaces, component states, page-aware recipes, and independent decorations across the app shell, real conversations, skill marketplace, settings, forms, overlays, code blocks, process rows, and loading states.
When the request is to create, refine, review, or repair a skin, you must read skin-authoring-and-repair-guide.md completely before editing. It explains the user-owned project, unrestricted effect boundary, source ownership, real-data preview, and visual iteration method. Do not infer those rules from this overview.
Safety boundary
- Installing this Skill changes nothing by itself. Treat
apply,custom,apply-project, andremoveas instance writes; run them only after the user asks to change the instance.create-projectwrites only the explicitly selected project directory. - Before the first write, state that a skin is same-origin JavaScript with full page access and no official compatibility, security, or reliability guarantee.
- Require a NextClaw build that exposes the experimental
/api/ui-inject.jshook. If a correct file has no visible effect after refresh, ask the user to update NextClaw; do not patch application bundles. - Never overwrite or remove a file owned by another tool. The script enforces this boundary.
- Applying an included skin downloads one pinned image from the upstream Codex Dream Skin repository, verifies its SHA-256 digest, and embeds it into
ui-inject.js. It never downloads or executes remote JavaScript. A missing download or digest mismatch is a hard failure; do not substitute another image. - A personal project's
skin.jsis arbitrary, unsandboxed, same-origin JavaScript with full page access. Skin Studio exposes no JavaScript API and does not make this code safe. Inspect the project source, explain the risk, and apply only code the user trusts. - Several upstream gallery entries depict public figures or protected characters. Before applying one, say that the upstream image is third-party material, is not covered by the upstream MIT software license, and remains the user's responsibility. Do not imply endorsement by the depicted person or rights holder.
- All browsers connected to the same NextClaw home use the same active skin. Refresh the page after a change; do not restart NextClaw.
- When the user asks to preview local real data, use the real NextClaw home and isolate only the development process run state. Do not copy a small subset of sessions into a temporary home and present it as a real-data preview.
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.
- agents/openai.yaml 502 B
- assets/concept-decoration-styles.js 5.3 KB runs code
- assets/concept-navigation-styles.js 10 KB runs code
- assets/content-styles.js 13 KB runs code
- assets/control-styles.js 12 KB runs code
- assets/foundation-styles.js 14 KB runs code
- assets/navigation-styles.js 7.3 KB runs code
- assets/renderer.js 16 KB runs code
- assets/skins.json 10 KB
- marketplace.json 2.9 KB
- references/skin-authoring-and-repair-guide.md 11 KB
- references/third-party-notices.md 1.8 KB
- scripts/skin-project.mjs 7.4 KB runs code
- scripts/skin.mjs 11 KB runs code
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.
- 7d ago First seen · 98 lines · 115 tokens per session scan A 36d25be11dbf
nextclaw-skin-studio is a skill published in the GitHub repository Peiiii/nextclaw (256 stars, last pushed today), licensed MIT. It adds 115 tokens to every session and 1,661 once invoked, about $0.0006 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 2026-09-03.
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