How to Use the Nationalize MCP in Claude Code

Q: How do I configure Nationalize for Claude Code?

Run the claude mcp add command in your terminal. Make sure you pass the --transport http flag before specifying the server name and URL.

Claude Code runs demographic analysis directly from your terminal.

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Connect Nationalize MCP to Claude Code

Create your Vinkius account to connect Nationalize to Claude Code 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 Nationalize with Claude Code

Ask AI about this MCP

ChatGPT

Claude

Perplexity

Query the MCP Server headless

The `predict_nationality` tool accepts a text string and returns a JSON array of probabilistic country matches. You trigger it straight from your command line, letting your AI client hit the Nationalize.io endpoint without opening a browser. This works perfectly in automated environments. You can pipe a text file full of surnames into the agent, and it will loop through the tool to generate a mapped output file in seconds.

Automate data enrichment

Backend developers use this to backfill missing regional data in their databases. You write a short bash script, and the agent calls `predict_nationality` for every null country field it finds. The tool returns the ISO country code with the highest probability. Your script then updates the database records automatically, turning a tedious manual task into a fast background job.

Build CI/CD localization checks

You can integrate name-based region checks into your deployment pipelines. If a pull request adds new hardcoded user profiles, the agent verifies their assigned regions against the API probabilities. The entire process runs headlessly through your MCP Server. If the tool flags a mismatch between a surname and its assigned country code, the pipeline throws a warning before the code ever merges.

Setup guide

Set up Nationalize MCP in Claude Code

Prerequisites

Claude Code CLI installed (npm install -g @anthropic-ai/claude-code)
Active Vinkius subscription with a valid endpoint token

1

Run the add command

Open your terminal and run the command shown on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com. Use --scope user to make it available across all projects.
2

Verify the connection

Start a Claude Code session and type /mcp to list connected servers. You should see nationalize-mcp with a green status indicator.
3

Start using tools

Ask Claude Code something like "Check my latest Nationalize transactions." It will automatically discover and invoke the available Nationalize tools.

Terminal

claude mcp add --transport http nationalize-mcp https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

Get your connection token →

Prerequisites

Claude Code CLI installed
Active Vinkius subscription with a valid endpoint token

1

Open the config file

Create or edit .mcp.json in your project root for project-level scope, or ~/.claude.json for user-level scope.
2

Add the Nationalize MCP

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

Restart Claude Code

Start a new Claude Code session. Type /mcp to confirm the server is connected. The tools will be automatically available in your conversation.

.mcp.json

{
  "mcpServers": {
    "nationalize-mcp": {
      "type": "url",
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

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Common questions about Nationalize MCP in Claude Code

Run the `claude mcp add` command in your terminal. Make sure you pass the `--transport http` flag before specifying the server name and URL.

Yes. You can ask the agent to fetch the raw JSON from the endpoint and pipe it directly into jq or save it to a local log file.

The accuracy drops significantly when you feed it first names or full names. Always parse your inputs to extract the last name before calling the tool.

It runs anywhere your terminal does. You just need an active MCP connection to execute the same commands in a container, an SSH session, or a GitHub Action.

The system transmits only the specific text variables passed to the command. Your underlying databases and shell history remain entirely isolated from the external API.

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