How to Use the AI21 Labs MCP in Cursor

Generate code comments, fix documentation, and get API-ready text from AI21 Labs directly inside your Cursor editor.

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Connect AI21 Labs MCP to Cursor

Create your Vinkius account to connect AI21 Labs 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 AI21 Labs with Cursor

Ask AI about this MCP

ChatGPT

Claude

Perplexity

Draft text for your application

The `ai21_chat_completion` tool lets you generate text with Jamba models right in your editor. Ask Cursor's agent to write user-facing error messages, placeholder UI copy, or even draft an email, and it will insert the text directly into a string variable in your code. This isn't just about filling in blanks. Because the agent has the context of your code, you can ask it to generate text that fits the specific feature you're working on. It's much faster than switching over to a browser and copy-pasting.

Process text right in the editor

Use `ai21_paraphrase_text` and `ai21_summarize_text` to deal with text inside your project. You can highlight a long comment block and ask the agent to summarize it, or select a confusing sentence in your README and have AI21 suggest clearer alternatives. This MCP Server also gives you tools for managing files. You can use `ai21_list_files` and `ai21_get_file` to inspect text files you've previously uploaded to AI21, all without leaving your IDE. It keeps your focus where it needs to be.

Connect AI21 Labs to your agent

With this MCP server, Cursor's agent can call the AI21 API on your behalf. This means you can run `ai21_grammar_correction` on documentation you're writing in a Markdown file or use `ai21_text_improvements` on UI copy before you commit it. Setting it up is simple. Just add the MCP server to your project's `.cursor/mcp.json` file. Now your agent has a new set of skills for handling any text-based task that comes up while you're coding.

Setup guide

Set up AI21 Labs 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 AI21 Labs 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 AI21 Labs transactions." If the MCP tools are loaded correctly, Cursor will call the AI21 Labs tools automatically. You can also check Settings → MCP for a green status indicator.

.cursor/mcp.json

{
  "mcpServers": {
    "ai21-labs-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by AI21 Labs. 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 AI21 Labs MCP in Cursor

You need to add this MCP Server to your configuration. Create a `.cursor/mcp.json` file in your project's root directory and add the server details. Once you save the file, the tools will be available to the agent.

Yes. The agent can insert text generated by AI21 tools directly into your source files. For example, you can ask it to generate content with `ai21_chat_completion` and place it inside a variable.

Absolutely. Just highlight the comments you want to check and ask the agent to correct the grammar. It will use the `ai21_grammar_correction` tool from this server to fix them for you.

It's perfect for long, complex functions with detailed comment blocks or for getting the gist of a lengthy README. Highlight the section and ask the agent to summarize it with `ai21_summarize_text`.

Your selected text is sent to the AI21 Labs MCP Server for processing and then forwarded to their API. The Vinkius-managed server runs in a zero-trust environment and does not log or retain your text content.

Use it with your favorite AI tools

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

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