# Agentic CLI Tools Hub > [!Note] > Sub-hub for the agentic CLI layer — Claude Code, OpenCode, and the > extension mechanisms that turn them into project-specific platforms. ## 1. The CLI itself - [[Agentic CLI]] - [[Plan Mode and Build Mode]] - [[Permission Policy]] --- ## 2. Project governance - [[AGENTS.md Convention File]] --- ## 3. Extending the CLI - [[Extension Trifecta]] - [[Skill]] - [[Model Context Protocol]] - [[MCP Server]] - [[Hook]] --- ## 4. Anchor sources - [[Claude Code Documentation]] - [[Model Context Protocol Specification]] --- ## Up - [[0 - Modern AI Software Engineering Hub]]