Borrowing it
Nothing to install: this file belongs to DemitriusQuadros/bruce. 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/DemitriusQuadros/bruce/master/.claude/skills/frontend-specialist/SKILL.mdgit clone --depth 1 https://github.com/DemitriusQuadros/bruceWrote 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/demitriusquadros/bruce/frontend-specialist)<a href="https://agentmods.dev/skills/demitriusquadros/bruce/frontend-specialist"><img src="https://agentmods.dev/badge/skills/demitriusquadros/bruce/frontend-specialist.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 | $0.00165 | $0.04371 |
| Opus 5 | $0.00082 | $0.02185 |
| Sonnet 5 | $0.00033 | $0.00874 |
| Haiku 4.5 | $0.00016 | $0.00437 |
Grade A, and why
frontend-specialist 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 8d 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.
const res = await fetch(API_BASE + path, opts); The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
3 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.
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.
- 8d ago First seen · 547 lines · 165 tokens per session scan A ee2e82f3a53a
frontend-specialist is a skill published in the GitHub repository DemitriusQuadros/bruce (5 stars, last pushed 5mo ago), with no licence file. It adds 165 tokens to every session and 4,371 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 2026-08-31.
Other skills, from other repositories
one-design-language
Constrains UI work to the shared design token vocabulary. Use when creating or modifying any component — new CSS values local to one screen are forbidden; every visual decision comes from the existing tokens (spacing, radii, colors, type scale) in globals.css.
shadcn
Manages shadcn components and projects — adding, searching, fixing, debugging, styling, and composing UI. Provides project context, component docs, and usage examples. Applies when working with shadcn/ui, component registries, presets, --preset codes, or any project with a components.json file. Also triggers for…
claude-design
Design one-off HTML artifacts (landing, deck, prototype).
sketch
Throwaway HTML mockups: 2-3 design variants to compare.
popular-web-designs
54 real design systems (Stripe, Linear, Vercel) as HTML/CSS.
impeccable
Frontend design guidance, upstream-maintained (impeccable).