Essential utilities for PDFs, Word docs, spreadsheets, presentations, and skill creation.
Work with Excel/CSV files: add columns, formulas, charts, clean messy data, convert formats.
mkdir -p ~/.claude/skills/core-xlsx && curl -fsSL https://raw.githubusercontent.com/anthropics/skills/HEAD/skills/xlsx/SKILL.md -o ~/.claude/skills/core-xlsx/SKILL.md Create and edit presentations: slide decks, pitch decks, templates, speaker notes.
mkdir -p ~/.claude/skills/core-pptx && curl -fsSL https://raw.githubusercontent.com/anthropics/skills/HEAD/skills/pptx/SKILL.md -o ~/.claude/skills/core-pptx/SKILL.md Create, modify, and test custom skills. Run evals, benchmark performance, optimize triggers.
mkdir -p ~/.claude/skills/core-skill-creator && curl -fsSL https://raw.githubusercontent.com/anthropics/skills/HEAD/skills/skill-creator/SKILL.md -o ~/.claude/skills/core-skill-creator/SKILL.md Create and edit Word documents: reports, memos, letters with tables of contents and formatting.
mkdir -p ~/.claude/skills/core-docx && curl -fsSL https://raw.githubusercontent.com/anthropics/skills/HEAD/skills/docx/SKILL.md -o ~/.claude/skills/core-docx/SKILL.md Build, test, and explain regular expressions. Generates regex patterns from natural language descriptions, explains complex existing patterns step by step, and handles edge cases across JavaScript, Python, and Go flavors.
mkdir -p ~/.claude/skills/regex-builder && curl -fsSL https://raw.githubusercontent.com/Jeffallan/claude-skills/HEAD/skills/prompt-engineer/SKILL.md -o ~/.claude/skills/regex-builder/SKILL.md Run a single Markdown file as a portable app, tool, or shell session through the String MCP runtime. Use /open, /act, /install, and /set to read files and URLs, run actions, install apps, and manage credentials from any agent.
mkdir -p ~/.claude/skills/using-string && curl -fsSL https://raw.githubusercontent.com/string-os/string/HEAD/skills/using-string/SKILL.md -o ~/.claude/skills/using-string/SKILL.md Generate professional PDFs with Typst — the modern LaTeX alternative. Creates reports, invoices, resumes, academic papers, and presentations with clean markup that compiles instantly.
mkdir -p ~/.claude/skills/typst-documents && curl -fsSL https://raw.githubusercontent.com/anthropics/skills/HEAD/skills/pdf/SKILL.md -o ~/.claude/skills/typst-documents/SKILL.md Set up a self-optimizing, multi-vendor AI agent team in a folder of Markdown. Each agent is a citizen with a signed capability card; tasks are contracts routed to the best performer by a learning bandit; settled contracts produce lessons that compound into team memory.
mkdir -p ~/.claude/skills/polis-protocol && curl -fsSL https://raw.githubusercontent.com/yehudalevy-collab/polis-protocol/HEAD/SKILL.md -o ~/.claude/skills/polis-protocol/SKILL.md