Agentic Design Patterns In Production — Design skill for Claude Code
What happens when you read 500K lines of a production agent runtime and extract the patterns the textbook didn't cover.
How to install Agentic Design Patterns In Production
This entry records only its repository, not the path inside it, so there is no
exact command to give. Open artvandelay/agentic-design-patterns-in-production and copy the folder into
~/.claude/skills/, or the file into ~/.claude/agents/.
What Agentic Design Patterns In Production does
What happens when you read 500K lines of a production agent runtime and extract the patterns the textbook didn't cover. 19 chapters on the engineering beneath Claude Code.
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README
Agentic Design Patterns in Production
[Download the complete book as a PDF](Agentic-Design-Patterns-in-Production.pdf)
What happens when you read the source code of a production agent runtime and extract the patterns the textbook didn't cover.
Origins
Three inputs produced this book:
- Agentic Design Patterns by Alessandro Gulli — the foundational taxonomy of 21 agentic patterns
- The Claude Code source leak (March 2026) — ~500K lines of a production agent runtime, revealing patterns that only emerge under real load, real money, and real adversaries
- Codex Agentic Patterns — an earlier project applying the same method to OpenAI's Codex CLI
Reading Order
| # | File | Topic |
|---|---|---|
| — | 00-introduction.md |
Origins, what changed, who this is for |
| Part One: Foundations | ||
| 1 | part-1-foundations/01-agent-loop.md |
The minimal viable agent |
| 2 | part-1-foundations/02-prompt-assembly.md |
Prompts as layered configuration |
| 3 | part-1-foundations/03-tool-use.md |
The model-runtime contract |
| 4 | part-1-foundations/04-routing.md |
Dispatching to the right place |
| Part Two: Orchestration | ||
| 5 | part-2-orchestration/05-prompt-chaining.md |
Sequential multi-step workflows |
| 6 | part-2-orchestration/06-parallelization.md |
Concurrent execution and fan-out |
| 7 | part-2-orchestration/07-planning-decomposition.md |
Budget-aware plan-then-execute |
| 8 | part-2-orchestration/08-reflection-self-correction.md |
Bounded self-correction |
| Part Three: State and Memory | ||
| 9 | part-3-state-memory/09-session-lifecycle.md |
Sessions are not conversations |
| 10 | part-3-state-memory/10-memory-management.md |
Accumulation and consolidation |
| 11 | part-3-state-memory/11-context-economics.md |
Context as a scarce resource |
| Part Four: Safety | ||
| 12 | `part-4-safety/12-permi |
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