Self-hosted alternatives to writing-skills

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writing-skills

Test-driven documentation for creating reusable agent techniques, patterns

writing-skills is an agent skill from Jesse Vincent's (obra) Superpowers collection, listed on skills.sh. It applies test-driven development to writing skills: write pressure scenarios, watch an agent fail without the skill, write the skill, watch the agent comply, then close loopholes. It covers where skills live in Claude Code, Codex, Copilot CLI and Gemini CLI. A skill is a SKILL.md file of instructions (sometimes with scripts and reference notes) that an AI agent loads only when a task calls for it, so the agent knows the steps to follow and what to avoid. It is free and open source.