Launching today

AI Patterns Dev

Launching today

Design patterns your AI agent can actually use

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Design patterns your AI agent can actually use

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AI Coding Agents

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LLM Developer Tools

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Prompt Engineering Tools

aipatterns.dev is a reference for design patterns, refactoring techniques and code smells, written for AI coding agents. Every page ships as HTML, raw Markdown, MCP tools and installable skills. Every pattern includes a do-not-use list.

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Launch tags:Developer Tools•Artificial Intelligence•Vibe coding

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Maker

📌

Hi Product Hunt 👋 I watched my coding agents invent their own retry logic, factory, and circuit breaker. Then I found why. Pattern references talk to humans. They hide the part agents need most: when a pattern does not fit. So I built the reference I wanted my agents to read. Every page ships as HTML, raw Markdown, MCP tools, and installable skills. Every pattern includes a "do not use it when" list, because the best pattern choice is often no pattern. Browse the full reference free on the site. Install a skill with npx skills add and your next refactor uses it directly. Ask me anything about the MCP server, the skills, or the writing process.

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1d ago

Forum Threads

p/ai-patterns

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6h ago

The Refactor Benchmark

The setup

We wrote a deliberately messy TypeScript codebase: an order system with 840 lines, 11 modules, and 67 tests. It carries the debt you find in legacy code. A duplicated pricing engine. Deep nesting. Magic numbers. Dead code. We copied the codebase into two identical repositories. The same coding agent, with the same model and the same prompt, refactored both. The MCP run could call the aipatterns MCP server and read its skills. The plain run had no server and no skills. One static analyzer scored both results after the runs. This was a small test: one run per condition. We say more about that below.

p/ai-patterns

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1d ago

Design Patterns for AI Coding Agents

The problem

AI coding agents write production code now. Ask one which design pattern fits your problem. You get a confident answer. Nobody measured it.

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