node-express

node-express is a cursor rule for Cursor from toptalentcoder/Cursor-AwesomeRules. It costs 423 tokens per session, scanned A, a copy of node-express, CC0-1.0.

A set of backend guidelines for Node.js and Express.js, tools commonly used to build web servers and APIs in JavaScript or TypeScript.

In plain words
What is it for?
Use it when building Express routes, REST APIs, middleware, authentication, database access, configuration and API documentation.
Why use it?
It provides consistent choices for organizing server code, validating requests, handling errors, securing routes and connecting to databases.

Cursor rule for Cursor

Written for Cursor: a Cursor rule (.mdc).

Good fit Use it when building Express routes, REST APIs, middleware, authentication, database access, configuration and API documentation.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/toptalentcoder/cursor-awesomerules/node-express
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/toptalentcoder/Cursor-AwesomeRules

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 node-express

README.md
[![agentmods](https://agentmods.dev/badge/rules/toptalentcoder/cursor-awesomerules/node-express/github.svg)](https://agentmods.dev/rules/toptalentcoder/cursor-awesomerules/node-express)
Your own site
<a href="https://agentmods.dev/rules/toptalentcoder/cursor-awesomerules/node-express"><img src="https://agentmods.dev/badge/rules/toptalentcoder/cursor-awesomerules/node-express/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 node-express

Your own site · 80×15
<a href="https://agentmods.dev/rules/toptalentcoder/cursor-awesomerules/node-express"><img src="https://agentmods.dev/badge/rules/toptalentcoder/cursor-awesomerules/node-express.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 423 This file is loaded in full into every session.
When invoked 423 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 91% copy Near-identical to another mod 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 $0.00423 $0.00423
Opus 5.5 $0.00169 $0.00169
Sonnet 5.5 $0.00085 $0.00085
Haiku 4.5 $0.00042 $0.00042

Measured 1mo ago against content hash fd5e837fe639, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

node-express 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 1mo 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.

Origin

This is a copy

91% identical to node-express — 7 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

rules-new/node-express.mdc · 86 lines

What it actually says

Node.js and Express.js Best Practices

Project Structure

  • Use proper directory structure
  • Implement proper module organization
  • Use proper middleware organization
  • Keep routes organized by domain
  • Implement proper error handling
  • Use proper configuration management

Express Setup

  • Use proper middleware setup
  • Implement proper routing
  • Use proper error handling
  • Configure proper security middleware
  • Implement proper validation
  • Use proper static file serving

API Design

  • Use proper REST principles
  • Implement proper versioning
  • Use proper request validation
  • Handle errors properly
  • Implement proper response formats
  • Document APIs properly

Database Integration

  • Use proper ORM/ODM
  • Implement proper migrations
  • Use proper connection pooling
  • Implement proper transactions
  • Use proper query optimization
  • Handle database errors properly

Authentication

  • Implement proper JWT handling
  • Use proper password hashing
  • Implement proper session management
  • Use proper OAuth integration
  • Implement proper role-based access
  • Handle auth errors properly

Security

  • Use proper CORS setup
  • Implement proper rate limiting
  • Use proper security headers
  • Implement proper input validation
  • Use proper encryption
  • Handle security vulnerabilities

Performance

  • Use proper caching
  • Implement proper async operations
  • Use proper connection pooling
  • Implement proper logging
  • Use proper monitoring
  • Handle high traffic properly

Testing

  • Write proper unit tests
  • Implement proper integration tests
  • Use proper test runners
  • Implement proper mocking
  • Test error scenarios
  • Use proper test coverage

Deployment

  • Use proper Docker setup
  • Implement proper CI/CD
  • Use proper environment variables
  • Configure proper logging
  • Implement proper monitoring
  • Handle deployment errors

Best Practices

  • Follow Node.js best practices
  • Use proper async/await
  • Implement proper error handling
  • Use proper logging
  • Handle process signals properly
  • Document code properly
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. 1mo ago First seen · 86 lines · 423 tokens per session scan A fd5e837fe639

Subscribe to this mod's changes

node-express is a cursor rule published in the GitHub repository toptalentcoder/Cursor-AwesomeRules (6 stars, last pushed 1y ago), licensed CC0-1.0. It adds 423 tokens to every session, about $0.0017 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 91% identical to node-express, differing in 7 lines, and is treated as a copy.