Updates

Change Log

2026-06-13

Summary

• Fixed English-locale links that pointed to bare /books/... paths, which redirected (308) into the Korean edition. They now point to /en/books/....
• Updated the affected links on the cover page: the Harness Engineering related-reading link and all Contents card links.
• General review pass for typo, markdown, and notation consistency.

Affected Chapters

• index (cover)

2026-05-24

Summary

• Added the English edition of the Agentic Documentation handbook.
• Expanded the core framing from AI-readable docs to agent-operable documentation.
• Added coverage for AGENTS.md, AGENTS.override.md, CLAUDE.md, .claude/rules/, Skills, Plugins, MCP, OpenAPI, RAG, and llms.txt.
• Added agent documentation security coverage for prompt injection, tool poisoning, excessive agency, and supply chain risk.
• Added OpenAPI 3.2, MCP Tool schema, annotation limits, RAG freshness, and citation-first KB guidance.
• Added templates for project rules, Skills, Plugins, MCP Tool/Resource docs, llms.txt, runbooks, KB docs, and security review.

Affected Chapters

• all English chapters

Source Links

• OpenAI Codex: Custom instructions with AGENTS.md
• OpenAI Codex: Skills
• OpenAI Codex: Build plugins
• Claude Code: How Claude remembers your project
• Claude Code: Skills
• Model Context Protocol: Understanding MCP servers
• Model Context Protocol Schema Reference
• MCP Security Best Practices
• OpenAPI Specification v3.2.0
• OpenAPI Initiative: Announcing OpenAPI v3.2
• OWASP Top 10 for LLM Applications
• AGENTS.md
• The /llms.txt file