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api-design-patterns

Design FastAPI API contracts with endpoints, schemas, pagination, and error formats.

1|Updated Feb 7, 2026
Search Tags:#design#versioning#api#pydantic#fastapi#openapi#pagination
One-click install
npx skills add https://github.com/xvawl/template-nextjs --skill api-design-patterns-xvawl
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: api-design-patterns
Source: https://github.com/xvawl/template-nextjs/tree/main/.agents/skills/api-design-patterns
Command: npx skills add https://github.com/xvawl/template-nextjs --skill api-design-patterns-xvawl

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

API contract design conventions streamline the creation of consistent, well-documented API surfaces for FastAPI projects, reducing renegotiation and integration gaps across teams.

Core Features & Use Cases

  • RESTful naming conventions, OpenAPI documentation scaffolding, and standardized error formats to improve clarity and consistency.
  • Pydantic v2 schema naming patterns (Create/Update/Response), cursor-based pagination, and a structured versioning strategy to govern evolution.
  • Use during design reviews to align frontend and backend contracts before implementation, and to serve as a reusable API design reference.

Quick Start

Draft a contract for a new FastAPI endpoint following the conventions in this guide.

Frequently Asked Questions about api-design-patterns

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

FAQPage Schema
How do I design a consistent API contract for a FastAPI project?▼

Applying API design patterns during the design phase enforces REST naming, Pydantic v2 schema conventions like Create/Update/Response, cursor-based pagination, error formatting, and versioning guidelines for FastAPI endpoints.

What are the standard Pydantic v2 schema patterns for API design?▼

API design conventions enforce Pydantic v2 schema naming patterns using Create, Update, and Response models to maintain clear data contracts for FastAPI endpoints.

How does cursor-based pagination work in OpenAPI documentation?▼

OpenAPI documentation scaffolding includes cursor-based pagination guidelines, which standardize how clients traverse large datasets by passing opaque cursors instead of absolute offsets in FastAPI applications.

What is the best way to structure API versioning for RESTful services?▼

A structured versioning strategy governs API evolution by enforcing consistent versioning guidelines across RESTful services, preventing contract breaks when endpoints are modified.

Can I use these API design conventions to align frontend and backend contracts before implementation?▼

These API design conventions serve as a reusable reference during design reviews, aligning frontend and backend contracts before implementation to reduce renegotiation and integration gaps across teams.

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