Borrowing it
Nothing to install: this file belongs to tuanductran/nextdns-skills. 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/tuanductran/nextdns-skills/main/CLAUDE.mdgit 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/instructions/tuanductran/nextdns-skills/claude-md)<a href="https://agentmods.dev/instructions/tuanductran/nextdns-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/tuanductran/nextdns-skills/claude-md/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/instructions/tuanductran/nextdns-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/tuanductran/nextdns-skills/claude-md.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 | $0.03334 | $0.03334 |
| Opus 5 | $0.01667 | $0.01667 |
| Sonnet 5 | $0.00667 | $0.00667 |
| Haiku 4.5 | $0.00333 | $0.00333 |
Grade C, and why
nextdns-skills CLAUDE.md 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 10d 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 — 332 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Repository overview
NextDNS Skills is a structured knowledge collection for AI agents, enabling complex operations across the NextDNS ecosystem via domain-specific context injection:
- NextDNS API: Programmatic configuration, analytics, and log management.
- NextDNS CLI: Deployment, system configuration, and monitoring.
- NextDNS Web UI: Strategic configuration and dashboard-based management.
- Integrations: Third-party platform connections (OpenWrt, pfSense, Tailscale, and more).
- NextDNS Frontend: Nuxt 4, Next.js 15, Astro, SvelteKit, and React Router v7 patterns.
Repository architecture
nextdns-skills/
├── skills/
│ ├── nextdns-api/ # 23 rules — API protocols and endpoints
│ │ ├── SKILL.md
│ │ └── rules/
│ ├── nextdns-cli/ # 24 rules — Deployment and system config
│ │ ├── SKILL.md
│ │ └── rules/
│ ├── nextdns-ui/ # 16 rules — Web dashboard strategy
│ │ ├── SKILL.md
│ │ └── rules/
│ ├── integrations/ # 20 rules — Platform connectivity
│ │ ├── SKILL.md
│ │ └── rules/
│ └── nextdns-frontend/ # 35 rules — Frontend frameworks
│ ├── SKILL.md
│ └── rules/
│ ├── astro/
│ ├── nextjs/
│ ├── nuxt/
│ ├── react-router/
│ └── sveltekit/
├── packages/
│ ├── nextdns-scripts/ # Validation and maintenance scripts
│ │ ├── dist/ # index.mjs, cli.mjs, shared chunks
│ │ ├── src/
│ │ │ ├── cli.ts
│ │ │ ├── index.ts
│ │ │ ├── commands/ # validate-rules, update-counts, checks, audit
│ │ │ ├── core/ # shared utilities and version helpers
│ │ │ └── __tests__/
│ │ ├── tsconfig.json
│ │ ├── vite.config.ts
│ │ └── vitest.config.ts
│ ├── nextdns-markdown/ # Shared remark AST and frontmatter utilities
│ │ ├── dist/ # index.mjs and declarations
│ │ ├── src/
│ │ │ ├── index.ts
│ │ │ └── __tests__/
│ │ ├── tsconfig.json
│ │ ├── vite.config.ts
│ │ └── package.json
│ └── nextdns-skills-build/ # Build tooling and programmatic API
│ ├── dist/ # index.mjs, cli.mjs, shared chunks
│ ├── src/
│ │ ├── cli.ts
│ │ ├── index.ts
│ │ ├── commands/ # build, validate, search, export, migrate
│ │ ├── core/ # config, parser, types, markdown, paths
│ │ └── __tests__/
│ ├── tsconfig.json
│ ├── vite.config.ts
│ └── vitest.config.ts
├── templates/
│ ├── rule-template.md
│ └── skill-template.md
├── data/schemas/
│ └── profile.json
├── tsconfig.json
├── pnpm-workspace.yaml
└── turbo.json
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.
- 10d ago First seen · 332 lines · 3,334 tokens per session scan C 2c9c7839e19b
nextdns-skills CLAUDE.md is an instructions file published in the GitHub repository tuanductran/nextdns-skills (4 stars, last pushed today), licensed MIT. It adds 3,334 tokens to every session, about $0.0167 per session on Opus 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.
Other instructions, from other repositories
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.