FastAPI LLM Security in Practice: Block Prompt Injection, Cost Explosions, and Tool Permission Issues with Code—and Make 50 Security Tests a CI Gate

Protect chatbots, RAG, and tool calls integrated with FastAPI from prompt injection, runaway costs, and privilege abuse. Defend them with dependencies, middleware, and tool code; verify your defenses with pytest and 50 security tests; and control releases with GitHub Actions gates. Complete 84 hands-on exercises with no API fees.