OpenCode Crash Course: A Practical Guide to AI-Assisted Coding with Agents, Skills, MCP Servers, and Free AI Models

Build real applications with AI without needing expensive coding models.OpenCode Crash Course is a practical, hands-on guide to using OpenCode as an AI coding agent. Instead of focusing on theory, this book walks you through building a complete Next.js application called MoneyWise, featuring a landing page, mortgage repayment calculator, and compound interest calculator.Along the way, you'll learn how to get better results from OpenCode even when working with free AI models.Inside, you'll discover how to: - Install and configure OpenCode- Generate and modify code with AI- Use Build and Plan modes effectively- Create agent rules and project instructions- Build reusable custom slash commands- Understand context windows and avoid context pollution- Extend OpenCode with Agent Skills- Connect external services using MCP servers- Create custom agents and sub-agents- Delegate tasks to specialized AI agents- Use AI to debug, improve, and secure your application- Structure your workflow so AI produces more consistent resultsRather than simply asking AI to "build an app," you'll learn how to give it the right instructions, context, tools, and responsibilities.Whether you're a developer exploring AI-assisted coding or someone looking for a practical introduction to coding agents, OpenCode Crash Course will help you move from simple prompting to a more structured and powerful AI development workflow.Start building with OpenCode and discover how much you can accomplish with AI coding agents.