MITBackend Testing

FastAPI Project Templates

Name: FastAPI Project Templates
Author: wshobson

By wshobson· wshobson/agents· 0

Scaffolds production FastAPI projects with async patterns, DI, and pytest setup.

Installation

1
Make sure Claude is on your device and in your terminal.
Skills load from ~/.claude/skills/ when Claude Code starts up — so you need it on your machine first. If you don't have it yet, install it once with the command below, then run claude in any terminal to verify.
One-time setup
```
npm i -g @anthropic-ai/claude-code
```
Already have it? Skip ahead.

Paste into Claude Code or into your terminal.

Install

git clone ht•••••••••••••••••••••••••••••••••••• ••••••••••••••••••••• •• ••••• •• ••••••••••••••••••••••••••••••••••••••••••• •• •• •• •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• ••••••••••••••••••••••••••••••••••••••••••••

This copies the whole skill folder into ~/.claude/skills/fastapi-templates-wshobson/ — the SKILL.md plus any scripts, reference docs, or templates the skill ships with. Safe default: works for every skill.

Faster alternative (instruction-only skills)

Skips the clone and grabs only the SKILL.md file. Don't use this if the skill ships Python scripts, reference markdowns, or asset templates — they won't be downloaded and the skill will fail when it tries to load them.

Quick install (SKILL.md only)

mkdir -p ~/.•••••••••••••••••••••••••••••••••••••••• •• •••• ••••• •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• •• ••••••••••••••••••••••••••••••••••••••••••••••••••••

Restart Claude Code.
Quit and reopen Claude Code (or any other agent that loads from ~/.claude/skills/). New skills are picked up on startup.
Just ask Claude.
Skills auto-activate when your request matches the skill's description — no slash command needed. Trigger phrases live in the skill's own frontmatter; you can read them in the “What this skill does” section above.

Prefer to read the source first? Open on GitHub.

When Claude uses it

Gives Claude a production-ready FastAPI project blueprint: a layered app structure (api/core/models/schemas/services/repositories), FastAPI dependency injection with Depends for DB sessions and auth, and idiomatic async route, database, and middleware patterns. Includes a working async test harness using pytest, httpx AsyncClient, and an in-memory SQLite session with dependency overrides. Reach for it when starting a new FastAPI service or microservice and you want correct structure and testing wired in from the start.

What this skill does

What it does: Provides reference patterns and templates for standing up a production-ready FastAPI backend with async support, clean layering, and tests.

Recommends a layered project layout separating API routes (versioned endpoints + router), core config/security/database, models, Pydantic schemas, services, and repositories
Covers FastAPI's built-in dependency injection via Depends for database session management, authentication/authorization, shared logic, and config injection
Shows idiomatic async patterns for route handlers, database operations, background tasks, and middleware
Includes a complete async test setup: pytest fixtures, httpx AsyncClient, an in-memory SQLite (aiosqlite) session, and app.dependency_overrides to swap the DB dependency
Points to a references/details.md file with deeper implementation patterns and worked examples beyond the navigation summary