How to Use the ZIP Codes API MCP in Claude Code

Q: How do I use the ZIP Codes API with Claude Code to find all codes for a state?

Run claude mcp call zip-codes-api-mcp --tool=findzipsbystate --param=state:TX. This executes the request headless and pipes the list of ZIPs directly into your shell output.

Q: Can I use Claude Code for distance calculations with ZIP Codes API?

Yes. You can build a simple script that calls getzipdistance using two source codes as parameters. The result is standard JSON, making it easy to parse in your pipeline.

Run geo-data lookups and location validations directly in your terminal with Claude Code.

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Setup ZIP Codes API with Claude Code

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Automating State and County Lookups via MCP Server

In a CI/CD pipeline, you might need to validate input regions. Use `find_zips_by_state` or `find_zips_by_county` directly from your shell script. The output pipes cleanly into variables for subsequent commands. This is perfect for headless execution because the MCP Server returns clean JSON that standard tooling can read and parse without any GUI interference.

Calculating Geo-Distance in Shell Scripts

Need to check if two points are within a specific range? Run `get_zip_distance` inside your script. You pipe the result into an arithmetic command, allowing you to fail the build or proceed based on the calculated distance. This provides reliable validation for scripts that handle physical location requirements.

Full Location Audit in a Terminal Workflow

You can create a multi-step script. Start by getting all ZIPs for a city using `find_zips_by_city`, then loop through those results, calling `get_zip_details` for each one to gather required demographic data. The MCP Server handles the complex orchestration so your terminal session remains clean and focused on the final result set.

Setup guide

Set up ZIP Codes API 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 zip-codes-api-mcp with a green status indicator.
3

Start using tools

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

Terminal

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

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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 ZIP Codes API 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": {
    "zip-codes-api-mcp": {
      "type": "url",
      "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 ZIP Codes API. 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 ZIP Codes API MCP in Claude Code

Run `claude mcp call zip-codes-api-mcp --tool=find_zips_by_state --param=state:TX`. This executes the request headless and pipes the list of ZIPs directly into your shell output.

Yes. You can build a simple script that calls `get_zip_distance` using two source codes as parameters. The result is standard JSON, making it easy to parse in your pipeline.

Absolutely. You write a shell loop that iterates over results from one call (like `find_zips_by_county`) and feeds those individual codes into another tool like `get_zip_details`.

Yes. You pass the starting code and the mile radius to the MCP Server's `find_zips_in_radius` tool call directly in your terminal command.

The server handles structured geographic records, including ZIP codes, city names, state abbreviations, county names, and related demographic details. It's all non-PII location metadata.

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