anoscranel/agent-skills-subskills

35 MIT-licensed Agent Skills for professional work: software engineering, writing, prompt engineering, and one meta-skill that builds and audits skills like these.
Each skill is a short routing index (SKILL.md) over a flat set of leaf files (subskills/.md). The agent loads the index, picks one leaf, and follows it. Every leaf holds its full procedure and never hands the task to another skill.
## What's in the pack
| Suite | Skills | Leaves |
| Software engineering | 19 | 60 |
| Writing | 14 | 48 |
| Prompt engineering (ac-prompt-engineer) | 1 | 12 |
| Skill authoring (ac-subskills-author) | 1 | 10 |
| Total | 35 | 130 |
Software engineering: agent-coding-governance · api-design · architecture · ci-and-release · code-construction · code-review · codebase-maintenance · database-changes · debugging · frontend-ui · git-workflow · performance · quality-verification · reliability · software-engineering-standards · spec-writing · task-planning · testing · design-taste
Writing: academic-writing · business-writing · drafting · editing · evidence-and-citation · narrative-writing · news-writing · persuasive-writing · plain-language · proposal-writing · technical-writing · voice-and-style · writing-standards · slide-decks
Every skill name carries the ac- prefix (for example ac-testing).
## How a leaf is built
Each leaf has a routing header (name, domain, trigger, anti-trigger, scope, status) and, for the craft leaves, six sections: Standard, Decision rules, Procedure, Anti-patterns, Done checklist, Sources. Claims cite public primary sources inline. Paywalled or single-source claims carry a ⚠️ flag.
## Install
Copy one skill directory (or all of them) into a skills directory your harness reads:
| Harness | Global path | Project path |
| opencode | ~/.config/opencode/skills/ / or ~/.agents/skills/ / | .opencode/skills/ / |
| Claude Code | ~/.claude/skills/ / | .claude/skills/ / |
| Other Agent Skills harnesses | see your harness's docs | |
sh
git clone https://github.com/anoscranel/agent-skills-subskills.git
cp -r agent-skills-subskills/skills/ac-testing ~/.claude/skills/
Restart the harness, then confirm the skill is listed (opencode: opencode debug skill). Paths per the opencode skills docs.
## Code in this repo
The only executable code is four Python checkers in skills/ac-subskills-author/scripts/; leaves may show illustrative snippets that nothing runs. The four checkers use the standard library only, make no network calls and write no files, and run only when you call them:
| Script | What it does |
| linttree.py | Checks a skill tree's structure: frontmatter, domain chain, index ↔ disk, links, no hand-off lines |