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 agentmods add rules/kleosr/kleosrules/nextgit clone --depth 1 https://github.com/kleosr/kleosrulesWhat 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 | $0.00000 | $0.00361 |
| Opus 5 | $0.00000 | $0.00180 |
| Sonnet 5 | $0.00000 | $0.00072 |
| Haiku 4.5 | $0.00000 | $0.00036 |
Grade A, and why
next 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 2d 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.
What it actually says
Next.js
This is not the Next in training. Before Write, Read the matching guide under node_modules/next/dist/docs/ from this app's package (monorepos: not the repo root if next is nested). Heed deprecations.
If that folder is missing: Next <16.2. Use project AGENTS.md / .next-docs/ or npx @next/codemod@canary agents-md. Do not guess APIs.
Detect router from the tree: app/ → App Router only. pages/ without app/ → Pages only. Never mix.
Hard
- Fetch in Server Components. No
useEffectfor initial server data. cookies()/headers(): follow this version's docs (often async).- No
getServerSideProps/getStaticPropsinapp/. Nonext/navigationin Pages. - No Vite
import.meta.envfor Next public env; useprocess.envas this version documents. - Knowledge from bundled docs, not from a Next "knowledge skill". Skills like
next-dev-loopare workflows only.
pnpm for installs. Subagents inherit this.
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.
- 2d ago First seen · 24 lines · 0 tokens per session scan A fb197fcbd9b9
next is a cursor rule published in the GitHub repository kleosr/kleosrules (2 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 361 tokens. 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 2026-08-31.
Other cursor rules, from other repositories
react
Rules for React component files (any framework).
3d-graphics
Three.js / React Three Fiber syntax: scene setup, R3F hooks, models, controls. Load for 3D code — taste, perf budgets, and mobile WebGL live in the 3d-web-experiences skill.
frontend-architecture
Vite + React SPA architecture - directory layout, providers, bundle splitting. Tailwind styling in tailwind.mdc.
forms
USE WHEN: Constructing forms, validating inputs, and managing form state with Zod schemas.
react-best-practices
USE WHEN: Designing React components, implementing hooks, and managing component lifecycles.
server-actions
Guidelines for Server Actions — validation, error handling, and when to use Route Handlers instead.