Learn OpenCode Agent

What Learn OpenCode Agent does

The site is organized into zones instead of one linear book. The OpenCode source breakdown is the main line at 24 chapters, a practice section has 28 chapters with matching example scripts in TypeScript, and an intermediate section covers RAG, multi-agent collaboration, planning, context, production architecture, security and cost. An animation lab visualizes agent mechanisms, an agent-selection section holds 24 guides on frameworks, RAG, search, models, tools, observability and cost, and an interview section reviews agent-engineering questions.

For Hermes users the relevant part is the Hermes Agent teardown under /hermes-agent/, which the README describes as main chapters plus an A to Z appendix. The repository runs locally with bun (bun install, then bun run dev), and a build:strict script runs 13 validation scripts before building the site. The published version is at book.zyh.lol.

Key features

• OpenCode source teardown in 24 chapters
• Hermes Agent teardown with main chapters and an A to Z appendix
• 28 practice chapters with example scripts
• Animation lab that visualizes agent mechanisms
• 24 agent-selection guides on frameworks, RAG, models, tools and cost
• Companion teardowns of Claude Code, DeepSeek Harness and Codex

When to use it

• Study how Hermes Agent is structured next to other agent harnesses
• Follow a learning path from agent basics to production concerns
• Prepare for agent-engineering interviews

Who it is for: Chinese-reading developers who want to learn agent engineering by reading how real agent systems are built.

How it fits with Hermes Agent

It is a learning resource and not Hermes tooling; one section dissects Hermes Agent alongside other agent harnesses.

FAQ