fastapi-gen 0.11.1

Set up a modern REST API by running one command.

FastAPI Gen

Create production-ready FastAPI applications in seconds

From simple APIs to LLM-enabled applications, all without build configuration.

Quick Start

Get a fully functional FastAPI app running in 30 seconds:

# Recommended: using uvx (no installation needed)
uvx fastapi-gen my_app
cd my_app && make start

Or install with uv:

uv tool install fastapi-gen
fastapi-gen my_app
cd my_app && make start

Or use pip:

pip install fastapi-gen
fastapi-gen my_app
cd my_app && make start

That's it! Open http://localhost:8000/docs to see your OpenAPI documentation.

Platform Support: Works on macOS and Linux | Report Issues

Why FastAPI Gen?

Focus on Code - Skip boilerplate setup and start building Production Ready - Enterprise patterns and best practices built-in Testing Included - Real test coverage from day one Zero Config - Ready-to-run templates that just work

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Templates Overview

Hello World - Perfect for Learning FastAPI

Best for: Learning FastAPI fundamentals and starting new projects

Key Features:

• REST API fundamentals with complete CRUD
• Configuration management (pydantic-settings & dotenv)
• Dependency injection and clean architecture
• Background tasks and exception handling
• Input validation and health monitoring
• Complete test coverage

View Details →

Advanced - Enterprise Production Template

Best for: Production applications with enterprise features

Key Features:

• JWT authentication with registration and login
• Database integration with SQLAlchemy 2.0 async
• Rate limiting and caching system
• WebSocket support and file upload
• Enhanced security and CORS configuration
• Full test suite

View Details →

NLP - Comprehensive AI Language Processing

Best for: AI applications with natural language processing

Key Features:

• 8 NLP capabilities: summarization, NER, generation, QA, embeddings, sentiment, classification, similarity
• Production architecture with startup model loading
• Smart configuration and device auto-detection
• Performance optimized with model caching
• Real AI testing with actual inference

View Details →

LangChain - Modern LLM Integration

Best for: Applications using LangChain for LLM workflows

Key Features:

• Optimized loading with startup caching
• Modern LangChain patterns and best practices
• Smart config with auto device detection
• Production ready with health checks
• Dual endpoints: text generation and question answering

View Details →

Llama - Local LLM Powerhouse

Best for: Local LLM inference with llama-cpp-python

Key Features:

• Local LLM focus optimized for Gemma/Llama GGUF models
• GPU acceleration with auto detection
• Advanced config for context windows and threading
• Production ready with lifecycle management
• Easy setup with auto model download

Requirements: ~4GB model download + 4GB+ RAM

View Details →

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Template Comparison

Template	Best For	Complexity	AI/ML	Database	Auth
Hello World	Learning, Simple APIs	Basic	No	No	No
Advanced	Production Apps	Medium	No	Yes	Yes
NLP	AI Text Processing	Advanced	Yes	No	No
LangChain	LLM Workflows	Advanced	Yes	No	No
Llama	Local LLM	Advanced	Yes	No	No

What You Get Out of the Box

Zero Configuration • Production Patterns • Complete Testing • Code Quality • Auto Documentation • Deployment Ready

Focus on Your Code, Not Setup

All dependencies (FastAPI, Pydantic, Pytest, etc.) are preconfigured. Just create and run:

fastapi-gen my_app   # Create
cd my_app            # Enter  
make start           # Run!

Every Template Includes:

• Ready-to-run development environment
• Industry-standard project structure
• Comprehensive test suites with examples
• Ruff linting and formatting
• Auto-generated OpenAPI documentation
• Makefile with common development commands

Installation & Usage

You'll need to have Python 3.11+ or later version on your local development machine. We recommend using the latest version. You can use uv for Python version management and project workflows.

Choose Your Template

# Default (hello_world)
uvx fastapi-gen my_app

# Or specify a template
uvx fastapi-gen my_app --template <template-name>

Available templates: hello_world, advanced, nlp, langchain, llama

Built-in Commands

Inside the newly created project, you can run:

make start

Runs the app in development mode.
Open http://localhost:8000/docs to view OpenAPI documentation in the browser.

The page will automatically reload if you make changes to the code.

make test

Runs tests.
By default, runs tests related to files changed since the last commit.

License

fastapi-gen is distributed under the terms of the MIT license.