---
title: sync
description: Regenerate typed tool, plugin, and router registrations
---

Run `sync` after direct shadcn installation or changes to an installed descriptor:

```bash
bunx chat-js@alpha sync
```

The command checks installed UI compatibility, then regenerates tool and plugin registrations from local descriptors. It does not fetch new source, apply database migrations, or upgrade an older application template.

| Flag              | Default           | Purpose                   |
| ----------------- | ----------------- | ------------------------- |
| `-c, --cwd <cwd>` | Current directory | Select the ChatJS project |

```bash
bunx chat-js@alpha sync --cwd ./my-app
```

Keep custom behavior in app-owned integration modules. Do not edit generated lists to install a capability. Use [add](./add) to install source and sync its registrations together. See [Source Ownership](../core/source-ownership) and [Using Plugins](../plugins/using-plugins).