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@21st-dev

21st Labs

21st Labs

We build tools for developers who ship fast and care about craft.

Open Source

Project Description
1code Orchestration layer for coding agents (Claude Code, Codex) GitHub stars
21st.dev npm for design engineers — largest marketplace of shadcn/ui components, blocks and hooks GitHub stars
Magic MCP MCP server for AI-powered frontend development in Cursor, Windsurf, and Cline GitHub stars
21st SDK The fastest way to add an AI agent to your app — runtimes, sandboxed execution, streaming, drop-in React components GitHub stars
Agent Elements Production-ready React components for chat, tools, and AI workflows — a shadcn-style registry of agent UI primitives GitHub stars

Links

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  1. magic-mcp magic-mcp Public

    It's like v0, but in your Cursor / Claude Code / Windsurf: search 10,000+ React/Tailwind components, generate new UI with AI, and publish your own — right from your editor. Magic MCP is now the 21s…

    TypeScript 5.8k 442

  2. cli cli Public

    JavaScript 19 4

Repositories

Showing 10 of 15 repositories
  • magic-mcp Public

    It's like v0, but in your Cursor / Claude Code / Windsurf: search 10,000+ React/Tailwind components, generate new UI with AI, and publish your own — right from your editor. Magic MCP is now the 21st MCP; this package keeps old configs working. Setup: 21st.dev/mcp

    21st-dev/magic-mcp's past year of commit activity
    TypeScript 5,830 ISC 442 1 0 Updated Sep 1, 2026
  • codex-plugin Public

    21st.dev Codex plugin (self-hosted marketplace): bundles the 21st-cli skill + the remote 21st MCP server.

    21st-dev/codex-plugin's past year of commit activity
    6 Apache-2.0 3 0 1 Updated Aug 26, 2026
  • claude-code-plugin Public

    21st.dev Claude Code plugin: bundles the 21st-cli skill + the remote 21st MCP server in one install.

    21st-dev/claude-code-plugin's past year of commit activity
    7 Apache-2.0 1 0 0 Updated Aug 26, 2026
  • skill Public

    21st.dev agent skill: search, install and publish React/shadcn components, themes and templates from the terminal. Install with: npx skills add 21st-dev/skill

    21st-dev/skill's past year of commit activity
    6 Apache-2.0 3 0 0 Updated Aug 26, 2026
  • 21st-sdk Public
    21st-dev/21st-sdk's past year of commit activity
    TypeScript 137 MIT 16 1 0 Updated Jun 18, 2026
  • registry Public

    Open-source CLI for managing private React component registries — publish, install, search, and share components with your team. Works with any AI agent that supports SKILL.md (Claude Code, Cursor).

    21st-dev/registry's past year of commit activity
    TypeScript 8 MIT 1 0 0 Updated Jun 11, 2026
  • phion Public
    21st-dev/phion's past year of commit activity
    TypeScript 7 1 0 26 Updated May 5, 2026
  • 21st-sdk-examples Public

    21st sdk - cookbook

    21st-dev/21st-sdk-examples's past year of commit activity
    TypeScript 41 11 0 2 Updated Apr 28, 2026
  • 21st-dev/agent-elements's past year of commit activity
    TypeScript 99 MIT 6 1 0 Updated Apr 24, 2026
  • .github Public
    21st-dev/.github's past year of commit activity
    1 0 0 0 Updated Apr 23, 2026