project-core

project-core is a cursor rule for Cursor from s0vers/next-app-i18n-starter. It costs 68 tokens per session, scanned A, original, MIT.

A set of project rules for a Next.js application, including package tooling, Node.js version, environment files, code style, Git commits, and documentation. Next.js is a framework for building web applications with JavaScript or TypeScript.

In plain words
What is it for?
Use it when changing the project's TypeScript, ESLint setup, Next.js pages, UI components, environment documentation, or Git-related files. It also specifies when to run the build and lint commands.
Why use it?
It gives the coding agent consistent project conventions and helps avoid invalid environment changes, unwanted files, incorrect imports, and unnecessary refactoring.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/. Also seen: mentions AGENTS.md.

Good fit Use it when changing the project's TypeScript, ESLint setup, Next.js pages, UI components, environment documentation, or Git-related files. It also specifies when to run the build and lint commands.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/s0vers/next-app-i18n-starter/project-core
Install

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.

Clone the repo
git clone --depth 1 https://github.com/s0vers/next-app-i18n-starter

Made for: Cursor.

Wrote 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.

agentmods badge for project-core

README.md
[![agentmods](https://agentmods.dev/badge/rules/s0vers/next-app-i18n-starter/project-core/github.svg)](https://agentmods.dev/rules/s0vers/next-app-i18n-starter/project-core)
Your own site
<a href="https://agentmods.dev/rules/s0vers/next-app-i18n-starter/project-core"><img src="https://agentmods.dev/badge/rules/s0vers/next-app-i18n-starter/project-core/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.

agentmods 80×15 button for project-core

Your own site · 80×15
<a href="https://agentmods.dev/rules/s0vers/next-app-i18n-starter/project-core"><img src="https://agentmods.dev/badge/rules/s0vers/next-app-i18n-starter/project-core.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 68 This file is loaded in full into every session.
When invoked 68 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00068 $0.00068
Opus 5.5 $0.00027 $0.00027
Sonnet 5.5 $0.00014 $0.00014
Haiku 4.5 $0.00007 $0.00007

Measured 20d ago against content hash 47ec930acfef, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

project-core 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 20d 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.

.cursor/rules/project-core.mdc · 9 lines

What it actually says

Repository instructions

Read and follow AGENTS.md. It is the model- and editor-independent source of truth for this repository. Keep project guidance there so every coding assistant receives the same conventions.

Changes

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.

  1. 20d ago Changed · -26 lines · -225 tokens per session 47ec930acfef
  2. 1mo ago First seen · 35 lines · 293 tokens per session scan A cedf314e976e

Subscribe to this mod's changes

project-core is a cursor rule published in the GitHub repository s0vers/next-app-i18n-starter (66 stars, last pushed 3d ago), licensed MIT. It adds 68 tokens to every session, about $0.0003 per session on Opus 5.5. 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.