Borrowing it
Nothing to install: this file belongs to FlorianBruniaux/starmapper. 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/FlorianBruniaux/starmapper/main/.agents/skills/nextjs-app-router-patterns/SKILL.mdgit clone --depth 1 https://github.com/FlorianBruniaux/starmapperWrote 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/florianbruniaux/starmapper/nextjs-app-router-patterns)<a href="https://agentmods.dev/skills/florianbruniaux/starmapper/nextjs-app-router-patterns"><img src="https://agentmods.dev/badge/skills/florianbruniaux/starmapper/nextjs-app-router-patterns.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 | $0.00048 | $0.00821 |
| Opus 5 | $0.00024 | $0.00411 |
| Sonnet 5 | $0.00010 | $0.00164 |
| Haiku 4.5 | $0.00005 | $0.00082 |
Grade A, and why
nextjs-app-router-patterns 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 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.
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.
The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
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.
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 · 115 lines · 48 tokens per session scan A 8de4ab196350
nextjs-app-router-patterns is a skill published in the GitHub repository FlorianBruniaux/starmapper (83 stars, last pushed 6d ago), with no licence file. It adds 48 tokens to every session and 821 once invoked, about $0.0002 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 2026-08-30.
Other skills, from other repositories
semiotic-charts
Generate trustworthy, accessible, agent-legible charts with Semiotic. Use whenever you produce a data visualization in a React/TypeScript app, stream a chart as generative UI, or pick a chart type for a dataset. Emit a validated config and run the trust loop — never hand-write chart JSX that breaks on first paint.
add-component
Add a new visualization component to Unovis end to end — the TypeScript core, the shared registry, the generated framework wrappers, a dev example, a gallery example, and docs. Use when asked to add/create a new component, chart type, plot, or diagram to the library, or to wire an existing core component through to…
add-gallery-example
Add an example to the Unovis gallery — a per-framework example directory under packages/shared/examples, registered in examples-list.tsx, with light/dark previews. Use when asked to add a gallery example, showcase a chart in the gallery, or create the gallery entry that accompanies a new component.
bklit-ui
Bklit UI charts and data visualization for any project using the @bklit shadcn registry. Install, compose, theme, and animate charts correctly. Triggers when working with @bklitui/ui/charts, @bklit components, data visualization, dashboards, or chart theming. Also invoke manually for chart tasks.
frontend-design
Create distinctive, production-grade frontend interfaces with high design quality. Covers design thinking, typography pairing, color theory, motion design, spatial composition, and code quality. Generates real working code — HTML/CSS/JS or React — with intentional aesthetic direction, not generic AI output.
vercel-react-best-practices
React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance…