001-feature-based-architecture

001-feature-based-architecture is a cursor rule for Cursor from cmnemoi/cursor-rules. It costs 0 tokens per session (3,247 once invoked), scanned A, original, MIT.

A set of architecture rules for separating application code into clear layers and business features. A monorepo is a single repository containing multiple related applications or packages.

In plain words
What is it for?
It guides backend domain, repository, service, and controller layers, plus frontend Vue features, interfaces, entities, and use cases.
Why use it?
It limits unwanted dependencies between business logic, frameworks, storage, and user-interface code, making changes easier to test and maintain.

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/cmnemoi/cursor-rules/001-feature-based-architecture
Clone the repo
git clone --depth 1 https://github.com/cmnemoi/cursor-rules

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 001-feature-based-architecture

README.md
[![agentmods](https://agentmods.dev/badge/rules/cmnemoi/cursor-rules/001-feature-based-architecture.svg)](https://agentmods.dev/rules/cmnemoi/cursor-rules/001-feature-based-architecture)
Your own site
<a href="https://agentmods.dev/rules/cmnemoi/cursor-rules/001-feature-based-architecture"><img src="https://agentmods.dev/badge/rules/cmnemoi/cursor-rules/001-feature-based-architecture.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 3,247 The whole file, excluding the scripts and references it only reads on demand.
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 $0.00000 $0.03247
Opus 5 $0.00000 $0.01623
Sonnet 5 $0.00000 $0.00649
Haiku 4.5 $0.00000 $0.00325

Measured 3d ago against content hash e33196384780, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

001-feature-based-architecture 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 3d 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.

emush/.cursor/rules/001-feature-based-architecture.mdc · 469 lines

How it starts

The opening of the file, as written. The whole thing — 469 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Architecture Standards

1.2.0

Context

  • These rules apply to the overall architecture of applications in the monorepo
  • They ensure proper separation of concerns
  • They promote testability and maintainability
  • Backend follows a Domain-Driven Design Clean Architecture approach (Entity/Domain, Repository, Service, Controller)
  • Frontend follows Feature-based Architecture principles with Vue components

Backend Architecture (Clean Architecture)

Layers

  • Separate code into distinct layers: Entity/Domain, Repository, Service, Controller
  • Ensure dependencies inversion between Repository and Service layer (Service → RepositoryInterface → Repository)
  • Keep the Domain layer independent of frameworks and external concerns
  • Use interfaces to define boundaries between layers

Entity/Domain Layer

  • Focus on business entities and logic
  • Keep domain models pure and framework-independent
  • Define value objects for complex value types
  • Define repository interfaces in the domain layer
  • Include enum classes to represent domain constants
  • Use ValueObject classes to represent complex immutable values

Service Layer

  • Implement use cases that orchestrate domain logic
  • Service classes should be focused on a single responsibility
  • Define service interfaces to allow for dependency inversion
  • Use DTOs for data transfer between layers
  • Implement proper validation at this layer

Repository Layer

  • Implement repository interfaces defined in the domain layer
  • Handle data persistence concerns
  • Keep infrastructure details isolated from business logic
  • Define repository interfaces that match domain needs

Controller Layer

  • Focus on API concerns and request/response handling
  • Keep presentation logic separate from business logic
  • Use controllers to handle HTTP requests
  • Implement proper error handling and response formatting
  • Return appropriate HTTP status codes based on operation results

Testing Approach

  • Write unit tests using in-memory implementations of repositories
  • Use the "Given-When-Then" pattern to structure tests
  • Create functional tests for end-to-end testing with real infrastructure
  • Follow TDD methodology to ensure proper test coverage
  • Write tests that test behavior, not implementation details

Read the full file on GitHub · 469 lines

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. 3d ago First seen · 469 lines · 3,247 tokens per session scan A e33196384780

Subscribe to this mod's changes

001-feature-based-architecture is a cursor rule published in the GitHub repository cmnemoi/cursor-rules (2 stars, last pushed 1y ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 3,247 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.