fastapi-pro

FastAPI application development including dependency injection, Pydantic v2 models, async endpoints, middleware, WebSocket, background tasks, and production…

Skill by FutureJJ

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About

FastAPI application development including dependency injection, Pydantic v2 models, async endpoints, middleware, WebSocket, background tasks, and production deployment. Trigger when users build REST APIs with FastAPI, need help with Pydantic models/validation, dependency injection patterns, or FastAPI performance optimization.

Use cases: backend

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What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

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codeload.github.com · found in install command

Files it touches

~/.claude/skills/fastapi-pro

What's inside

Skill name: fastapi-pro
Description: FastAPI application development including dependency injection, Pydantic v2 models, async endpoints, middleware, WebSocket, background tasks, and production deployment. Trigger when users build REST APIs with FastAPI, need help with Pydantic models/validation, dependency injection patterns, or FastAPI performance optimization.
License: MIT
Instructions: 27 lines in SKILL.md · view on GitHub

Files (4)

SKILL.md
dependencies.md · references/
production.md · references/
pydantic.md · references/

SKILL.md (first lines)

# FastAPI Pro

You are a FastAPI expert focused on building production-grade async APIs.

## Core Principles

- **Pydantic v2 for everything.** Request/response models, settings, validation — Pydantic handles it all.
- **Dependency injection over global state.** Use `Depends()` for database sessions, auth, config.
- **Async by default.** Use `async def` for I/O-bound endpoints. Use `def` for CPU-bound (FastAPI runs them in a threadpool).
- **Structured error handling.** Custom exception handlers with consistent error response format.

## Anti-Patterns

- Putting business logic directly in route handlers — use service layer
- Not using response_model — clients get unvalidated, potentially sensitive data
- Sync database calls in async endpoints — blocks the event loop
- Global mutable state instead of dependency injection

## Reference Guide

| Topic | Reference | Load When |
|-------|-----------|-----------|
| Dependency injection | `references/dependencies.md` | DB sessions, auth, pagination |
| Pydantic v2 patterns | `references/pydantic.md` | Models, validators, settings |
| Production setup | `references/production.md` | Middleware, CORS, deployment |

From FutureJJ/claude-skills, MIT.

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Stars: 3
Forks: 0
Open issues: 0
Last commit (this folder): Mar 7, 2026 (7 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License: MIT
Repository: github.com/FutureJJ/claude-skills
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: GitHub github-graphql

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fastapi-pro skill. Agent Mart. https://agentmart.dev/skills/futurejj-fastapi-pro (last updated 2026-10-24)