Claude Code Skills

A handful of Claude Code skills I built for my own stack — Obsidian, Notion, and a few general-purpose utilities.

Skills are markdown files under ~/.claude/skills/ that Claude Code auto-loads and triggers on natural-language matches. They let you turn repeated workflows into one-shot voice/text commands.

Each skill is packaged for reuse: copy the directory, fill in the SETUP.md placeholders, and it runs without depending on my private config.

Works across tools

These skills follow the Agent Skills open standard, published by Anthropic in December 2025. Any coding assistant that supports the standard — Cursor, OpenAI Codex CLI, Google Antigravity, GitHub Copilot, and 20+ others — loads them from ~/.claude/skills/ without modification. Install once; they're available everywhere.

Catalog

Skill	Category	One-liner
braindump	Thinking	Develops a raw, half-formed idea through adaptive one-question-at-a-time dialogue — what it is, what could be done with it, the smallest next step. Scales depth to the idea; writes nothing.
second‑opinion	Verification	Pull a fresh, independent Opus agent in to verify the last load-bearing claim the assistant made — confirmed / refuted / can't tell, with evidence. On-demand escalation for cheaper sessions; relays the verdict verbatim instead of rubber-stamping its own reasoning.
session‑handoff	Workflow	Generate a structured handoff block when context is hot, mid-stream. Persists to disk + clipboard so a fresh session can resume after /clear.
github‑polish	GitHub automation	Make a public repo recruiter-ready in one pass — topics, description, worked-example README, LICENSE, honest CLI/UI handback. gh-only core (hand the repo link to your assistant and it installs itself), plus an optional rendering add-on for branded social cards / banners / diagrams.
claude‑inbox	Capture	Triage an Apple Reminders capture list one item at a time. Pair with a Siri shortcut for hands-free mobile capture.
triage	Capture	GTD-triage a captured-clippings inbox — analyze each, route, delete. Store-agnostic; wire it to your own vault or task manager.
sell	Web automation	Drives the Kleinanzeigen post-ad form via Playwright MCP. Fills every field, narrates German values back in English, stops before publish.
learn‑from‑mistakes	Workflow	Scans session history for failure patterns (loops, corrected assumptions, avoidable extra steps), filters for generalizability, and proposes surgical CLAUDE.md additions — one concise imperative directive per pattern, shown in context for approval before anything is written.

Install

# Pick one
cp -r skills/braindump ~/.claude/skills/
cp -r skills/second-opinion ~/.claude/skills/
cp -r skills/session-handoff ~/.claude/skills/
cp -r skills/github-polish ~/.claude/skills/
cp -r skills/claude-inbox ~/.claude/skills/
cp -r skills/triage ~/.claude/skills/
cp -r skills/sell ~/.claude/skills/
cp -r skills/learn-from-mistakes ~/.claude/skills/

# Then read the SETUP.md in the copied folder for any placeholders to fill in.

Restart Claude Code (or open a new session). The skill auto-surfaces — invoke it with /<skill-name> or by triggering the natural-language pattern in its description.