Architecture
The Agentic Engineering Stack
From markdown primitives to agentic systems. Each layer builds on the ones below it. This is how I think about the architecture.
Primitives
Markdown, CLI, Bash, Git
4 concepts
Models
Claude, GPT, Gemini
3 concepts
Tools
Bash, Read, Edit, Write, Grep, Glob
1 concept
MCPs
External servers, protocol, integrations
2 concepts
Skills
Workflows, slash commands, composed behaviors
1 concept
Agents
Claude Code, Codex, Pi
3 concepts