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Encyclopedia of Agentic Coding Patterns

A maintained pattern language for building software with AI agents — for the practitioners who build with them and the leads who direct them.

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The beginning of the file, from our validated copy saved 2026-10-26T11:44:36.417Z. Cached copy · Source on aipatternbook.com

# Encyclopedia of Agentic Coding Patterns

> A maintained pattern language for building software with AI agents — for the practitioners who build with them and the leads who direct them.

This is the Encyclopedia of Agentic Coding Patterns, curated by Wolf McNally. It collects 332 articles organized as a pattern language across 14 sections. Updated 2026-10-23. Canonical URL: https://aipatternbook.com/. Append `.md` to any article URL below for a clean Markdown copy (e.g. https://aipatternbook.com/<slug>.md).

## Introduction

- [What's New](https://aipatternbook.com/whats-new): A running log of recent additions, edits, and structural changes to the encyclopedia, newest first.
- [Article Map](https://aipatternbook.com/article-map): An interactive graph of every pattern, concept, and antipattern in the encyclopedia and how they connect through their Related Articles links.
- [Welcome](https://aipatternbook.com/welcome): Why the knowledge behind good software matters more, not less, once agents write the code, and what skill replaces typing it yourself. (draft — not yet reviewed)
- [What Is Agentic Coding?](https://aipatternbook.com/what-is-agentic-coding): What separates an agent from autocomplete and chat, the three capabilities that made it possible, and what your job becomes once the agent writes the code. (draft — not yet reviewed)
- [What Are Design Patterns?](https://aipatternbook.com/what-are-design-patterns): Where the pattern-language idea came from, from Alexander's buildings to the Gang of Four's code, and why named patterns earn their keep when you direct an agent. (draft — not yet reviewed)
- [How to Read This Book](https://aipatternbook.com/how-to-read-this-book): A guide to the entry structure and the section map, so you can navigate the encyclopedia by situation rather than front to back. (draft — not yet reviewed)
- [How This Book Writes Itself](https://aipatternbook.com/methodology): How the Bartley engine researches, writes, edits, and deploys this book in a continuous loop, rewriting its own process based on what it observes. (draft — not yet reviewed)
- [Learning Tracks](https://aipatternbook.com/learning-tracks): Five curated reading paths through the encyclopedia, each a suggested order through roughly ten entries for a particular kind of reader.

## Product Judgment and What to Create

- [Problem](https://aipatternbook.com/problem): A real unmet need, friction, risk, or desire experienced by a specific person or organization, the foundation every product decision depends on. (draft — not yet reviewed)
- [Customer](https://aipatternbook.com/customer): The person or organization that pays, approves, or otherwise causes the product to exist, distinct from the user who uses it. (draft — not yet reviewed)
- [User](https://aipatternbook.com/user): The person whose workflow, pain, or desire the product directly touches, whose continued use is what sustains the product over time. (draft — not yet reviewed)
- [Value Proposition](http
…

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