# Sources

## obra-superpowers-writing-skills

- **URL:** https://github.com/obra/superpowers/tree/main/skills/writing-skills
- **Description:** Jesse Vincent's writing-skills skill — covers skill authoring patterns, Anthropic best practices, persuasion principles, and subagent-based skill testing
- **Contributing files:** SKILL.md, anthropic-best-practices.md, persuasion-principles.md, testing-skills-with-subagents.md, examples/CLAUDE_MD_TESTING.md
- **Status:** `extracted`