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 tuanductran/nextdns-skills --skill nextdns-frontendgit clone --depth 1 https://github.com/tuanductran/nextdns-skillsWrote 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/tuanductran/nextdns-skills/nextdns-frontend)<a href="https://agentmods.dev/skills/tuanductran/nextdns-skills/nextdns-frontend"><img src="https://agentmods.dev/badge/skills/tuanductran/nextdns-skills/nextdns-frontend/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/tuanductran/nextdns-skills/nextdns-frontend"><img src="https://agentmods.dev/badge/skills/tuanductran/nextdns-skills/nextdns-frontend.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00129 | $0.02168 |
| Opus 5.5 | $0.00052 | $0.00867 |
| Sonnet 5.5 | $0.00026 | $0.00434 |
| Haiku 4.5 | $0.00013 | $0.00217 |
Grade C, and why
nextdns-frontend scanned grade C 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 1mo 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.
Hidden instructionshighPrompt injection
Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.
<!-- @case-police-ignore Api --> How it starts
The opening of the file, as written. The whole thing — 110 lines — stays where its author put it; the contents beside it link to each section on GitHub.
NextDNS frontend skills
Nuxt, Next.js, Astro, SvelteKit, and React Router v8 patterns for building a secure, full-featured NextDNS management dashboard.
Nuxt rules
Patterns for Nuxt 4 (Vue) projects.
| Rule | Keywords | Description |
|---|---|---|
| api-proxy | api key, bff, server route, proxy, runtimeConfig, security | Proxy X-Api-Key through Nuxt server routes (BFF) |
| project-setup | nuxt, setup, nuxt.config, runtimeConfig, environment variables | Bootstrap a Nuxt 4 project for NextDNS integration |
| profile-management-ui | profile, crud, useFetch, composable, vue | Build profile list, create, update, and delete flows |
| logs-streaming | logs, streaming, sse, event source, real-time, server-sent events | Proxy and consume the NextDNS SSE log stream |
| analytics-charts | analytics, charts, time series, dashboard, visualization | Fetch and render analytics and time-series data |
| error-handling | error handling, notifications, toast, createError, api errors | Map NextDNS API errors to Nuxt UI notifications |
| tanstack-query | tanstack query, vue query, cache, mutation, optimistic, infinite | Advanced data fetching with Vue Query and cache invalidation |
Next.js rules
Patterns for Next.js 16 (React) projects using the App Router.
What ships with it
36 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.md 161 KB
- rules/astro/analytics-charts.md 6.3 KB
- rules/astro/api-proxy.md 5.0 KB
- rules/astro/error-handling.md 6.4 KB
- rules/astro/logs-streaming.md 6.1 KB
- rules/astro/profile-management-ui.md 6.0 KB
- rules/astro/project-setup.md 5.8 KB
- rules/astro/server-islands.md 7.7 KB
- rules/nextjs/analytics-charts.md 5.7 KB
- rules/nextjs/api-proxy.md 4.6 KB
- rules/nextjs/error-handling.md 6.2 KB
- rules/nextjs/logs-streaming.md 5.8 KB
- rules/nextjs/profile-management-ui.md 5.7 KB
- rules/nextjs/project-setup.md 5.6 KB
- rules/nextjs/tanstack-query.md 7.7 KB
- rules/nuxt/analytics-charts.md 5.4 KB
- rules/nuxt/api-proxy.md 4.3 KB
- rules/nuxt/error-handling.md 5.2 KB
- rules/nuxt/logs-streaming.md 5.5 KB
- rules/nuxt/profile-management-ui.md 5.1 KB
- rules/nuxt/project-setup.md 4.3 KB
- rules/nuxt/tanstack-query.md 7.1 KB
- rules/react-router/analytics-charts.md 4.5 KB
- rules/react-router/api-proxy.md 5.1 KB
- rules/react-router/data-revalidation.md 7.5 KB
- rules/react-router/error-handling.md 6.5 KB
- rules/react-router/logs-streaming.md 5.1 KB
- rules/react-router/profile-management-ui.md 5.0 KB
- rules/react-router/project-setup.md 4.1 KB
- rules/sveltekit/analytics-charts.md 4.3 KB
- rules/sveltekit/api-proxy.md 4.8 KB
- rules/sveltekit/error-handling.md 5.1 KB
- rules/sveltekit/logs-streaming.md 4.3 KB
- rules/sveltekit/profile-management-ui.md 4.3 KB
- rules/sveltekit/project-setup.md 3.3 KB
- rules/sveltekit/websocket-alternative.md 8.0 KB
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.
- 1mo ago First seen · 110 lines · 129 tokens per session scan C 76781779e6ab
nextdns-frontend is a skill published in the GitHub repository tuanductran/nextdns-skills (4 stars, last pushed yesterday), licensed MIT. It adds 129 tokens to every session and 2,168 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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