21st-cli — Agent Skill

Search, install and publish React/shadcn components, themes and templates on 21st.dev from any coding agent, via the 21st CLI (@21st-dev/cli).

Install

Cross-agent, via skills.sh (70+ supported agents — Claude Code, Cursor, Codex, Windsurf, Cline, Copilot, Goose, and more):

npx skills add 21st-dev/skill

Or fetch the raw SKILL.md directly:

curl -fsSL https://21st.dev/api/skills/21st-cli \
  -o ~/.claude/skills/21st-cli/SKILL.md

For Claude Code and Codex, this skill is also bundled together with the 21st MCP server in one plugin — see 21st-dev/claude-code-plugin and 21st-dev/codex-plugin.

What it does

Teaches the agent the full 21st CLI surface: search, get, add (install), generate, publish / publish-theme / publish-template, edit / delete, bookmarks, teams, and auth (login/whoami). See skills/21st-cli/SKILL.md for the full reference — this is a live mirror of 21st.dev/api/skills/21st-cli.

Get a 21st API key at https://21st.dev/settings/api-keys, or run npx @21st-dev/cli login.