Agent skills and instruction sets

Skills, command packs and instruction files that turn a general model into something that follows a specific process. The newest and least settled shelf in the directory.

Which instruction set will actually change the output I get?

6 tools

Anthropic Skills

The reference implementation of what a skill should look like

FreeNo licence file in the repository

Superpowers

A process framework that makes an agent plan before it builds

FreeMIT

AGENTS.md

One instruction file that every coding agent agrees to read

FreeOpen convention, no license required

Awesome Claude Code

A community index of commands, hooks and configurations

FreeCC0-1.0

Awesome CursorRules

Hundreds of stack specific instruction files to read and adapt

FreeCC0-1.0

llms.txt

A file that tells an agent what your site is and where to read it

FreeOpen proposal, no license required