cursorrules

A set of coding rules for TypeScript and Next.js 14 projects. It defines naming, exports, validation, testing, server components, database access, authentication checks, time zones, logging, and other project conventions.

In plain words
What is it for?
Use it to guide work in a TypeScript and Next.js 14 codebase, including writing components, API routes, tests, database code, and production logging.
Why use it?
It gives coding agents and developers consistent instructions for changing the project. It also flags practices that could cause security, testing, connection, or multi-time-zone problems.

Cursor rule for Cursor

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.

agentmods
npx agentmods add rules/googlarz/agents-sync/cursorrules
Clone the repo
git clone --depth 1 https://github.com/googlarz/agents-sync

Made for: Cursor.

Per session 241 This file is loaded in full into every session.
When invoked 241 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.00241 $0.00241
Opus 5 $0.00120 $0.00120
Sonnet 5 $0.00048 $0.00048
Haiku 4.5 $0.00024 $0.00024

Measured yesterday against content hash b3fdc602edf3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cursorrules 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 yesterday.

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.

docs/examples/.cursorrules · 20 lines

What it actually says

.cursorrules — managed by agents-sync v1.0.0

Language: TypeScript / Next.js 14

Run tests: npm test

  • Always: use kebab-case filenames (user-profile.tsx not UserProfile.tsx)
  • Always: named exports only (no default exports except Next.js page/layout components)
  • Always: validate external API responses with Zod
  • Always: co-locate tests (Button.test.tsx next to Button.tsx)
  • Always: server components by default — add 'use client' only when needed
  • Always: use cn() from lib/utils.ts for conditional classNames
  • Never: import PrismaClient directly (use src/lib/db.ts — connection pool exhaustion)
  • Never: add /api/ routes without checking middleware.ts auth coverage
  • Never: use date-fns without /utc variants (multi-timezone dashboard)
  • Never: commit .env or .env.local
  • Never: use TypeScript any — use unknown and narrow
  • Never: push directly to main
  • Never: use console.log in production (use logger utility)
  • Tests: npm test
  • Build: npm run build
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. yesterday First seen · 20 lines · 241 tokens per session scan A b3fdc602edf3

Subscribe to this mod's changes

cursorrules is a cursor rule published in the GitHub repository googlarz/agents-sync (5 stars, last pushed 2mo ago), licensed MIT. It adds 241 tokens to every session, about $0.0012 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 2026-08-31.