Agentic development with Claude Code
Chapters9
Published9
Edition2026
Languageen-GB
The chapters.
In chronological order
Chapter 01
Skills, subagents, hooks, CLAUDE.md: when to use what
Claude Code subagents vs skills, and where hooks and CLAUDE.md fit: the decision model from a real 31-agent, 29-skill, 11-hook setup.
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Chapter 02
CLAUDE.md vs hooks: why CLAUDE.md is advisory, and when a rule must graduate
CLAUDE.md vs hooks in Claude Code: why CLAUDE.md is advisory context, why a hook is deterministic, and the test for when a rule must graduate.
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Chapter 03
Claude Code hooks: a Stop hook example that actually blocks
A real Claude Code Stop hook example, the PreToolUse gate that blocks a command, and the exit code that decides whether either one enforces anything.
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Chapter 04
Why your hook isn't firing
How to debug Claude Code hooks: registration, matchers, stdin payloads, exit 2 vs exit 1, JSON output, and the fail-open silence that hides all of it.
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Chapter 05
Claude Code skills not always running: four fixes, ending in a hook
Claude Code skills not always running? The trigger is prose, not an event. Four fixes in order, ending with the hook that backstops the skill.
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Chapter 06
Claude Code multi-agent orchestration: subagents behind a review checkpoint
Claude Code multi-agent orchestration with a review checkpoint: parallel subagents behind a PreToolUse hook that blocks the commit until reviewers run.
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Chapter 07
MCP servers vs skills: which to reach for
Claude Code MCP server vs skills: which to use. Two questions that decide it, from an estate with 29 skills and one hand-added MCP server.
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Chapter 08
Token economics: what a multi-agent Claude Code setup really costs
Claude Code token cost in a multi-agent setup: where the multiplier comes from, the per-agent model dial, and the ANTHROPIC_API_KEY billing trap.
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Chapter 09
Building a personal AI dev system in Claude Code: the constitution, layer by layer
Build a personal AI dev system in Claude Code: the real layered constitution, why each layer was added, what got removed, and how to nudge a long session.
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