21st
Find, generate, build, explore, review, and publish project-aware UI with seven verified 21st.dev skills plus the remote 21st MCP server.
Plugin bundle · by 21st.dev
About
21st is a plugin bundle for AI coding tools published by 21st.dev. Marketplaces we read that list it: 1 (Community GitHub marketplaces). We first saw it on 2026-10-15 and have recorded no change since. As of our marketplace pass on 2026-10-16.
What it asks for
- Runs remotely
None of the marketplaces we read publishes its tools or the settings it asks for.
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Works with
- Claude Code
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a Claude Code plugin
Built from what Community GitHub marketplaces declares.
/plugin marketplace add 21st-dev/claude-code-plugin
/plugin install 21st@21stWhere it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Community marketplace 21st-dev/claude-code-plugin (Open the source on GitHub) | Listed | 0.4.1 | Forks (GitHub): 2 Stars (GitHub): 14 |
Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
Listed in one community marketplace
| Marketplace | Repository | Stars (GitHub) |
|---|---|---|
| 21st | 21st-dev/claude-code-plugin | 14 |
What the bundle contains
As published on Community GitHub marketplaces.
MCP servers: 1
21st
Skills: 7
21st-ai21st-cli-use21st-design-sync21st-registry21st-ui-build21st-ui-explore21st-ui-review
What changed
- Became a product we track
- Community GitHub marketplaces: appeared
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Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.
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