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interfaces

Define contracts that decouple implementations from consumers via service container binding.

3|Updated Feb 13, 2026
Search Tags:#design#interfaces#php#backend#laravel#contracts#dependency-inversion
One-click install
npx skills add https://github.com/codebar-ag/coding-guidelines --skill interfaces-codebar-ag
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: interfaces
Source: https://github.com/codebar-ag/coding-guidelines/tree/main/resources/boost/skills/interfaces
Command: npx skills add https://github.com/codebar-ag/coding-guidelines --skill interfaces-codebar-ag

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Contracts define the shape a class must conform to, enabling decoupling of concrete implementations from their usage and supporting multiple implementations and easier testing.

Core Features & Use Cases

  • Defines a contract that enables interchangeable implementations.
  • Encourages dependency inversion and testability across modules.
  • Use cases include swapping data sources, mocking during tests, and enforcing consistent APIs.

Quick Start

Create an interface under App\Contracts representing the capability, then type-hint it in consumers and bind it to a concrete class in the service container.

Frequently Asked Questions about interfaces

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I define clean contracts to decouple PHP implementations?▼

To define clean contracts, create an interface representing a capability, type-hint it in consumers, and bind it to a concrete class in the service container. This decouples implementations from their consumers for easier swapping and testing.

How do I bind interfaces to concrete classes in a Laravel service container?▼

Binding interfaces involves defining a contract under App\Contracts and registering it with a concrete class in the service container. This allows consumers to type-hint the interface and receive the bound implementation automatically.

Can I use interfaces to mock data sources during backend testing?▼

Yes, you can use interfaces to mock data sources during testing. By defining a contract and type-hinting it in consumers, you can inject mock implementations to isolate tests from concrete data sources.

What is the best way to enforce consistent APIs across Laravel modules?▼

The best way to enforce consistent APIs is by defining contracts that specify required methods. This ensures all module implementations conform to the same interface shape, enforcing consistency across your application.

Does dependency inversion require interfaces for swapping implementations?▼

Yes, dependency inversion requires interfaces to swap implementations. Contracts define the expected shape, allowing you to change concrete classes without modifying the consumers that depend on them.

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