Step-by-Step Guides
Practical, code-heavy guides for building production FastAPI AI backends. Each guide walks through a specific capability with working code examples that you can copy directly into your project.
Add JWT + API Key Auth to FastAPI
How to add JWT and API key authentication to FastAPI — step-by-step guide covering token generation, middleware, role-based access, and per-key rate limiting.
5 stepsAdd Usage-Based Stripe Billing to FastAPI
How to add usage-based Stripe billing to FastAPI — meter tokens, report usage, handle webhooks, and manage subscriptions for AI API products.
5 stepsBuild a RAG Pipeline with FastAPI + pgvector
How to build a RAG pipeline with FastAPI, pgvector, and OpenAI — document ingestion, embedding, vector search, and LLM-powered answers. Complete guide.
5 stepsAdd SSE/Streaming LLM Responses to FastAPI
How to add SSE streaming for LLM responses in FastAPI — real-time token delivery from OpenAI/Anthropic with proper error handling and client integration.
5 stepsDeploy FastAPI to Production
How to deploy a FastAPI backend to production — Docker setup, Railway/Render/Fly.io deployment, environment variables, database provisioning, and monitoring.
5 stepsAdd Celery Background Jobs to FastAPI
How to add Celery background jobs to FastAPI — async task queues for document ingestion, batch LLM processing, and long-running AI workloads with Redis.
5 steps