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Issue #5

The Three-Layer Agent Extension Architecture

How hooks, extensions, and skills give AI agents real power — the complete system powering a 30-extension, 60-skill platform

Issue 005 of the htek.dev newsletter. Last issue, we turned a phone into an AI tool with the MCP pattern. This time, we’re going one layer deeper: the architecture that turns GitHub Copilot from a clever assistant into a production system.

The Problem: Most Agents Are Just Autocomplete With Extra Steps

Here’s the uncomfortable truth about a lot of “AI agent” demos: they aren’t really systems. They’re a language model, a text box, and a prayer.

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