How to Use the Liveblocks (Collaborative) MCP in Cursor

Q: How do I add the Liveblocks (Collaborative) MCP Server to Cursor?

Create a .cursor/mcp.json file in your project root and add the server configuration under the mcpServers key. Once configured, enable Agent mode in your chat panel to let the editor invoke the tools.

Q: How do I authorize users during development with Cursor and the Liveblocks (Collaborative) MCP Server?

The agent uses authorizeuser or identifyuser to generate valid tokens with specific permissions. You can use these tokens directly in your local frontend code to test user access control.

Q: Can I manage comment threads while writing code?

Yes, the server exposes listthreads and createthread tools. Your agent can pull down active user feedback from your app and display it right next to the code you are writing.

Generate working collaborative code in Cursor using real Liveblocks data via this MCP Server.

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Connect Liveblocks (Collaborative) MCP to Cursor

Create your Vinkius account to connect Liveblocks (Collaborative) to Cursor and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Liveblocks (Collaborative) with Cursor

Ask AI about this MCP

ChatGPT

Claude

Perplexity

Draft real-time code with live room context

The `get_storage` tool retrieves the entire LSON or JSON storage tree of a live room directly into your editor context. Instead of guessing how your database schema maps to your frontend components, your agent reads the live state to write perfect TypeScript definitions. It gives you actual production data structures to build against. If the room storage is empty or needs a reset, the agent runs `initialize_storage` to bootstrap the data structure. This lets you scaffold new collaborative features in your codebase and immediately test them with real room states. You get working code on the first try because this MCP Server prevents hallucinations.

Debug Yjs synchronization directly in the editor

The `get_ydoc` tool fetches the raw Yjs document state so your editor agent can analyze conflict resolution issues. When real-time sync breaks, you don't have to guess which client sent a bad update. The agent inspects the state tree and writes the exact fix your client needs. You can also use `list_versions` to pull the version history snapshots of your shared document. This lets your agent compare historical states, track down when a bug was introduced, and write code to revert or patch the state safely. It turns a nightmare debugging session into a quick chat command.

Test room events without leaving your code

The `broadcast_event` tool sends custom JSON payloads to any active room directly from your editor chat. This allows you to test how your frontend handles custom multiplayer events, like hand-raising or reactions, without manually clicking around multiple browser tabs. To make testing even faster, the agent can run `list_rooms` to find your active testing environments. You can quickly switch between different rooms, inspect their current states, and verify that your event listeners are working properly. It cuts your feedback loop down from minutes to seconds.

Setup guide

Set up Liveblocks (Collaborative) MCP in Cursor

Prerequisites

Cursor installed (macOS, Windows, or Linux)
Active Vinkius subscription with a valid endpoint token

1

Open MCP Settings

Go to Cursor Settings → MCP or open the Command Palette (Cmd+Shift+P / Ctrl+Shift+P) and search for "MCP: Add Server".
2

Add the Liveblocks (Collaborative) MCP

Cursor will create or open .cursor/mcp.json in your project root. Paste the JSON snippet on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Enable Agent mode

Open Composer (Cmd+I / Ctrl+I) and switch to Agent mode using the dropdown at the top. MCP tools are only available in Agent mode.
4

Verify the connection

Ask Cursor something like "List my recent Liveblocks (Collaborative) transactions." If the MCP tools are loaded correctly, Cursor will call the Liveblocks (Collaborative) tools automatically. You can also check Settings → MCP for a green status indicator.

.cursor/mcp.json

{
  "mcpServers": {
    "liveblocks-collaborative-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

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Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Liveblocks. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about Liveblocks (Collaborative) MCP in Cursor

Create a `.cursor/mcp.json` file in your project root and add the server configuration under the mcpServers key. Once configured, enable Agent mode in your chat panel to let the editor invoke the tools.

Absolutely, because your agent can read actual room storage via `get_storage` and write code that matches your live database schema. This eliminates the need for mock data or stubs.

The agent uses `authorize_user` or `identify_user` to generate valid tokens with specific permissions. You can use these tokens directly in your local frontend code to test user access control.

Yes, the server exposes `list_threads` and `create_thread` tools. Your agent can pull down active user feedback from your app and display it right next to the code you are writing.

Yes, your API keys and the collaborative room metadata, Yjs document states, thread comments, and user presence it manages are protected. Vinkius isolates this MCP Server in an ephemeral V8 sandbox, ensuring your credentials are never exposed to other environments.

Use it with your favorite AI tools

Connect this server to Cursor, Claude, VS Code, and more.

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