9arm-skills

9arm-skills

Agent skills loaded by Claude Code.

Layout

Skills live under skills/, grouped into buckets:

• engineering/ — daily code work
• productivity/ — daily non-code workflow tools
• misc/ — kept around but rarely used
• personal/ — tied to my own setup, not promoted
• in-progress/ — drafts not yet ready to ship
• deprecated/ — no longer used

Each skill is its own directory containing a SKILL.md (with YAML frontmatter — name and description) and any bundled scripts or reference files.

Install

With npx skills (Recommended - works for every agent)

npx skills add thananon/9arm-skills

Alternative - Bash script

For my own dev loop — symlink every shippable skill into ~/.claude/skills/:

./scripts/link-skills.sh

List every SKILL.md in the repo:

./scripts/list-skills.sh

Reference

Engineering

• debug-mantra — Four-mantra debugging discipline: reproduce → trace the fail path → falsify the hypothesis → cross-reference every breadcrumb. Recites verbatim at session start, then applies in order before any fix.
• post-mortem — Write the canonical engineering record of a fixed bug — root cause, mechanism, fix, validation, how it slipped through. Engineer-audience; refuses to draft without a reliable repro, known cause, and validated fix.
• scrutinize — Outsider-perspective end-to-end review of a plan, PR, or code change. Questions intent (is there a simpler way?), traces the actual code path, and verifies the change does what it claims. Output is concise, actionable, with rationale.

Productivity

• management-talk — Rewrite engineer-to-engineer content for engineering-org leadership and shape it for the channel it's going to (JIRA, Slack, async standup, email, meeting talking-points).

Misc

(none yet)