Cursor rules for TypeScript, React, Node

Cursor rules for TypeScript, React, Node is a skill for Claude Code, Codex from AmariahAK/atlarix-skills. It costs 9 tokens per session (623 once invoked), scanned A, original, Apache-2.0.

A set of coding rules for TypeScript, React, and Node.js projects, covering code style, testing, and software structure. Each rule also explains the reason behind it.

In plain words
What is it for?
Use it to guide strict TypeScript, naming, function size, clean architecture, dependency design, and testing decisions in full-stack JavaScript projects.
Why use it?
It gives an agent consistent guidance for writing code that is easier to understand, test, and maintain.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Cursor.

Good fit Use it to guide strict TypeScript, naming, function size, clean architecture, dependency design, and testing decisions in full-stack JavaScript projects.

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Install with agentmods
npx agentmods add skills/amariahak/atlarix-skills/acr-ai-agent-specialist
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.

Any agent
npx skills add AmariahAK/atlarix-skills --skill acr-ai-agent-specialist
Clone the repo
git clone --depth 1 https://github.com/AmariahAK/atlarix-skills

Made for: Claude Code, Codex.

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 Cursor rules for TypeScript, React, Node

README.md
[![agentmods](https://agentmods.dev/badge/skills/amariahak/atlarix-skills/acr-ai-agent-specialist/github.svg)](https://agentmods.dev/skills/amariahak/atlarix-skills/acr-ai-agent-specialist)
Your own site
<a href="https://agentmods.dev/skills/amariahak/atlarix-skills/acr-ai-agent-specialist"><img src="https://agentmods.dev/badge/skills/amariahak/atlarix-skills/acr-ai-agent-specialist/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 Cursor rules for TypeScript, React, Node

Your own site · 80×15
<a href="https://agentmods.dev/skills/amariahak/atlarix-skills/acr-ai-agent-specialist"><img src="https://agentmods.dev/badge/skills/amariahak/atlarix-skills/acr-ai-agent-specialist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 9 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 623 The whole file, excluding the scripts and references it only reads on demand.
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 $0.00009 $0.00623
Opus 5 $0.00005 $0.00311
Sonnet 5 $0.00002 $0.00125
Haiku 4.5 $0.00001 $0.00062

Measured 12d ago against content hash 090fd48ad30b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

Cursor rules for TypeScript, React, Node 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 12d 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.

skills/acr-ai-agent-specialist/SKILL.md · 60 lines

How it starts

The opening of the file, as written. The whole thing — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cursor rules for TypeScript, React, Node

When to use this skill

Cursor rules for TypeScript, React, Node.js, clean architecture, testing, and WHY-oriented engineering guidance.

Source

Synced from https://github.com/PatrickJS/awesome-cursorrules/tree/main/rules/ai-agent-specialist.mdc.

You are a senior full-stack developer specializing in TypeScript, React, and Node.js. Every rule includes a WHY explanation for the reasoning behind it.

Coding Standards

  • Use strict TypeScript. Never use any. Use unknown for dynamic data.

    WHY: Type safety prevents runtime errors and improves developer experience.

  • Max function length: 20 lines. Extract helpers for complex logic.

    WHY: Improves testability, readability, and makes code review easier.

  • Naming: camelCase for variables/functions, PascalCase for classes/interfaces, UPPER_SNAKE for constants.

    WHY: Consistent with TypeScript ecosystem standards.

  • Prefer interfaces over type aliases for objects.

    WHY: Interfaces are extendable and produce better error messages.

Architecture

  • Clean Architecture with dependency inversion. Domain layer is framework-agnostic.

    WHY: Testable business logic that survives framework changes.

  • Repository pattern for data access. Never call ORM directly from business logic.

    WHY: Decouples persistence from domain, enables testing with in-memory implementations.

  • React Query for server state, Zustand for client state. No Redux.

    WHY: Lighter weight, better TypeScript support, less boilerplate.

Error Handling

  • Custom AppError hierarchy with HTTP status codes. Throw for exceptional, return Result for expected failures.

    WHY: Clear intent — callers know which errors to catch vs handle.

  • Structured logging with Winston. Never log sensitive data (passwords, tokens, PII).

    WHY: Observability without security risk. Structured logs enable alerting.

Testing

  • 80% unit coverage, 100% critical paths. Use factory functions for test data.

    WHY: Factory functions are maintainable and composable. Fixtures become stale.

  • Mock only external dependencies (APIs, DB). Never mock internal logic.

    WHY: Tests should reflect reality. Over-mocking hides real bugs.

Read the full file on GitHub · 60 lines

Files

What ships with it

1 file 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.

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. 12d ago First seen · 60 lines · 9 tokens per session scan A 090fd48ad30b

Subscribe to this mod's changes

Cursor rules for TypeScript, React, Node is a skill published in the GitHub repository AmariahAK/atlarix-skills (2 stars, last pushed 5d ago), licensed Apache-2.0. It adds 9 tokens to every session and 623 once invoked, about $0.0000 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.