AI Engineering ／ Anthropic and Claude
First-Party Perspective from the Anthropic Engineering Team: Agent Engineering / Skills / MCP / Claude Code (2025–2026 Complete Collection)
25 hub wiki entries from the Anthropic engineering blog. Building Effective Agents framework (Workflow vs Agent + 5 patterns) + new Context Engineering paradigm (evolution of prompt engineering) + 4 categories of Harness design (single-shot / long-running single agent / long-running multi-agent / managed-decoupled) + 5 Tool design principles + Agent Skills open standard + Claude Code engineering (sandboxing / auto mode / best practices / 2 postmortems) + MCP evolution (code execution / DXT/MCPB / advanced tool use). 1-sentence index for all 25 posts. The Anthropic perspective is the "official first-party" layer in the [[wiki-ai-agent-architecture]] / [[wiki-claude-code-workflow]] series, cross-checked against third-party observations.