The alirezarezvani/claude-skills repository publishes 388 production‑ready skill packages that extend 13 AI coding agents—Claude Code, OpenAI Codex, Gemini CLI, OpenClaw, Hermes Agent, Mistral Vibe, Cursor, Aider, Windsurf, Kilo Code, OpenCode, Augment, and Antigravity—with domain‑specific expertise. Each skill comprises a SKILL.md instruction file, up to one Python CLI script (totaling 706 stdlib‑only tools requiring no pip install), and reference material (823 templates/checklists). Skills are grouped into 20 domains: engineering (core 53, powerful 93), product (17), marketing (49), productivity (12), academic research (10), research operations v2.9.0 (5), project management (9), regulatory & quality management (19), compliance OS (9), C‑level advisory (46), C‑level agents (22), business & growth (5), business operations (7), commercial (8), finance (5), agent launcher (6), loop library (1), and markdown‑to‑HTML conversion (5). A conversion script (./scripts/convert.sh --tool all) rewrites all 345 skills into native formats for each target agent in roughly 15 seconds, after which ./scripts/install.sh installs them into a project. Windows users must clone with core.symlinks=true and set PYTHONUTF8=1 to avoid symlink issues. The repository also provides a dependency‑free skill‑security‑auditor that scans for injection, exfiltration, and supply‑chain risks, returning PASS/WARN/FAIL with remediation. All tools and scripts are verified to run with the standard library only, ensuring zero external dependencies.