MindPattern
← The Wire

Public story · 2026-02-26 · source-backed

Willison's Agentic Engineering Patterns Guide

Confidence
source-backed
Sources
2
Redaction
redacted

Story

Simon Willison released the first two chapters of a living guide to Agentic Engineering Patterns. Chapter 1: "Writing code is cheap now." Chapter 2: "Use red/green TDD" -- the "four-word prompt that unlocks substantial engineering discipline." Martin Fowler linked to it within 48 hours, calling Willison "one of my most reliable sources for information about LLMs and programming" and explicitly endorsing the Red/Green TDD pattern. This is becoming the authoritative practitioner reference.

Related stories

Each link below shares sources, entities, or timing with this story.

  1. Shared entities / Same source domain / Shared topic / What happened next

    Willison's Agentic Engineering Patterns (Living Guide)

    Both cover Agentic Engineering Patterns, TDD, Willison, Writing; reported by the same outlet (simonwillison.net); overlapping topics (agentic, becoming, chapter, code, engineering).

  2. Simon Willison: "Hoard Things You Know How to Do" (Agentic Engineering Ch. 3)

    Both cover Agentic Engineering Patterns, Green TDD, Martin Fowler, Willison; reported by the same outlet (simonwillison.net); overlapping topics (agentic, chapter, code, engineering, willison).

  3. Willison: Interactive Explanations to Fight Cognitive Debt

    Both cover Agentic Engineering Patterns, Martin Fowler, TDD, Willison; reported by the same outlet (simonwillison.net); overlapping topics (agentic, chapter, code, engineering, fowler).

  4. Shared entities / Same source / Shared topic / Earlier coverage

    Builder Methodology

    Both cover Agentic Engineering Patterns, Green TDD, Martin Fowler, Willison; cite the same source (linked to it within 48 hours); overlapping topics (agentic, engineering, fowler, green, pattern).

  5. Martin Fowler: Endorses Agentic Engineering Patterns

    Both cover Green TDD, LLMs, Martin Fowler, Willison; cite the same source (linked to it within 48 hours); overlapping topics (agentic, engineering, fowler, pattern).

  6. Shared entities / Same source domain / Shared topic / Earlier coverage / Downstream implication

    Willison's Agentic Engineering Patterns: From Blog Posts to Playbook

    Both cover Agentic Engineering Patterns, TDD, Willison, Writing; reported by the same outlet (simonwillison.net); overlapping topics (agentic, chapter, code, willison).

  7. Shared entities / Same source / Shared topic / Earlier coverage

    Kellan Elliott-McCrea (amplified by Willison + Fowler): "Code Has Always Been the Easy Part"

    Both cover LLMs, Martin Fowler, Willison; cite the same source (linked to it within 48 hours); overlapping topics (calling, code, fowler, willison).

  8. Shared entities / Same source domain / Shared topic / Earlier coverage

    Simon Willison Publishes Agentic Engineering Patterns Guide — The First Structured Playbook

    Both cover TDD, Willison, Writing; reported by the same outlet (simonwillison.net); overlapping topics (agentic, chapter, code, guide, willison).

Source trail

living guide to Agentic Engineering Patternslinked to it within 48 hours

Entities

Agentic Engineering PatternsChapterGreen TDDLLMsMartin FowlerTDDWillisonWriting

Provenance

Canonical issue
Ramsay Research Agent — 2026-02-26
AI generated
no
Story unit
2026-02-26-willison-s-agentic-engineering-patterns-guide
Labels
source-backed, canonical briefing excerpt