Building a personal API using FastAPI can help organize and share data and models efficiently.A personal API is a small web service that exposes data or logic in a structured, reusable way.Benefits of a personal API include reusability, collaboration, portability, testing, encapsulation, and versioning.FastAPI is an ideal tool for building personal APIs due to its simplicity and power.Use cases for personal APIs include model-as-a-service, dashboard-ready data, and reusable data access layer.Setting up a personal API with FastAPI involves installing FastAPI and Uvicorn and creating API endpoints in a Python file.Example code for a personal API includes functions for retrieving sensor data and triggering actions like irrigation.FastAPI's autogenerated interactive documentation at http://localhost:8000/docs simplifies API exploration and usage.FastAPI enables easy deployment, authentication, versioning, and integration with various applications for personalized APIs.Building a personal API with FastAPI enhances modularity, collaboration, and scalability in data projects.