APIs For Beginners: Rest API, GraphQL, MCP (Model Context Protocol)

APIs For Beginners: REST API, GraphQL, MCP (Model Context Protocol) is a friendly, practical introduction to the technologies that help software applications communicate.Whether you are a student, aspiring developer, entrepreneur, or curious builder, this book explains APIs without assuming advanced programming experience. You will learn how REST APIs use HTTP requests and resources, how GraphQL uses schemas and flexible queries, and how MCP connects AI applications with trusted tools, data, and services.Inside, you will discover how to: - Understand endpoints, requests, responses, methods, and status codes- Design clear and dependable API contracts- Work with REST resources and JSON data- Understand GraphQL queries, mutations, schemas, and resolvers- Explore MCP hosts, clients, servers, tools, resources, and prompts- Add authentication, authorization, validation, rate limits, and safe errors- Test, document, version, and troubleshoot APIs- Build safer AI-agent integrations with consent and controlled accessWith approachable explanations, guided examples, practical labs, review questions, and a capstone project, this book helps you move from API beginner to confident builder.