How to Use the CNJ (Datajud API Pública) MCP in Claude

Q: How do I configure the CNJ (Datajud API Pública) MCP Server in Claude Desktop?

Open your claudedesktopconfig.json file and add the MCP server to the mcpServers object. Specify the command and arguments for the Vinkius endpoint, then restart the app.

Get live Brazilian court records directly inside Claude Desktop without leaving your chat window.

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Connect CNJ (Datajud API Pública) MCP to Claude Desktop

Create your Vinkius account to connect CNJ (Datajud API Pública) to Claude Desktop 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 CNJ (Datajud API Pública) with Claude Desktop

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Pull Brazilian lawsuit records straight into your workspace

The `search_process_by_number` tool pulls active Brazilian judicial records from the Datajud database directly into your chat. You paste a standard CNJ case number, and your agent fetches the current status, court location, and filing history. This setup runs locally on your machine via stdio transport. You get raw case details instantly, bypassing the tedious manual captcha screens on the official government portals.

Write raw Elasticsearch queries using this MCP Server

The `search_processes_advanced` tool exposes the full power of the Datajud Elasticsearch endpoint to your agent. You can run complex filters across multiple fields to pinpoint specific litigation patterns. Your AI client constructs the query payload, executes it, and displays the results in your chat interface. This lets you analyze thousands of Brazilian court filings using natural language commands.

Filter cases by class and court organ

The `search_processes_by_class_and_organ` tool filters legal cases by their specific judicial classification and the court handling them, exposing this data directly to your local MCP setup. You specify the target court like TRF1 or TJSP alongside the procedural class code. This capability helps legal teams map out judicial trends across different regions. You get clean, structured data back without writing custom scraping scripts.

Setup guide

Set up CNJ (Datajud API Pública) MCP in Claude Web or Desktop

1

Open Claude Settings

Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.
2

Add Custom Connector

Click the "+" button and select Add custom connector. Paste your Vinkius endpoint URL: https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. For OAuth-protected servers, expand Advanced settings to add credentials.
3

Start a conversation

Open a new chat. The CNJ (Datajud API Pública) MCP tools are available immediately — no restart needed.

Endpoint URL

https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

No configuration file needed — paste the URL directly in the Claude web interface.

Available on Free (1 connector), Pro, Max, Team, and Enterprise plans.

Prerequisites

Claude Desktop installed (macOS or Windows)
Active Vinkius subscription with a valid endpoint token

1

Open Claude Desktop Settings

Click the menu icon at the top-left corner, go to Settings → Developer → Edit Config. This opens claude_desktop_config.json in your default text editor.
2

Paste the CNJ (Datajud API Pública) MCP configuration

Copy the JSON snippet on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Desktop

Close and reopen the application. Claude needs a full restart to load new MCPs — refreshing a conversation is not enough.
4

Verify the connection

Open a new conversation. Click the 🔌 icon at the bottom of the message input. You should see tools listed under cnj-datajud-api-publica-mcp.

json

{
  "mcpServers": {
    "cnj-datajud-api-publica-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 CNJ Datajud. 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 CNJ (Datajud API Pública) MCP in Claude Desktop

Open your `claude_desktop_config.json` file and add the MCP server to the `mcpServers` object. Specify the command and arguments for the Vinkius endpoint, then restart the app.

Yes. Your agent uses the advanced search tool to query the unified Datajud API, which aggregates data across different regional and federal courts.

No. This server communicates with the public API endpoint, meaning you only need your Vinkius credentials to authenticate the connection.

Yes. You can add this server as a custom connector in your claude.ai account settings by pasting the remote MCP server HTTPS URL provided by Vinkius.

Vinkius routes your queries through an ephemeral V8 sandbox. Your search parameters and the returned judicial records are never stored on persistent disks or used for training models.

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