How to Use the GSA Per Diem Rates MCP in Claude

Q: How do I configure the GSA Per Diem Rates server in Claude Desktop?

Open your claudedesktopconfig.json file and add the server configuration under the mcpServers key. Once you save the file and restart Claude Desktop, the rate lookup tools will be ready to use in your chats.

Q: How does the tool handle cities with multiple ZIP codes?

The server uses getzipmapping to resolve specific ZIP codes to their official GSA city definitions. This ensures you get the exact rate for the specific neighborhood where your hotel is located.

Stop digging through federal PDFs and get official GSA lodging and meal rates directly inside Claude Desktop.

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Connect GSA Per Diem Rates MCP to Claude Desktop

Create your Vinkius account to connect GSA Per Diem Rates 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 GSA Per Diem Rates with Claude Desktop

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Instantly pull lodging rates in Claude Desktop

The GSA Per Diem Rates MCP server connects your desktop chat directly to the official government travel database to retrieve lodging limits. By calling `get_conus_lodging`, your local Claude Desktop client pulls the exact standard rates for the current fiscal year. You don't have to open a browser to check federal lodging limits when using Claude Desktop. When planning a trip in Claude Desktop, type the destination to verify the lodging limits instantly. It checks the location, maps the boundaries, and displays the maximum allowable lodging expense directly in your Claude chat window.

Get exact M&IE breakdowns for your expense reports

This MCP Server gives your Claude Desktop agent the ability to calculate exact meal and incidental expense limits using the `get_mie_breakdown` tool. Claude Desktop parses the response to show you exactly how much to allocate for breakfast, lunch, and dinner. It eliminates the guesswork when you are preparing travel authorizations in your desktop chat. You can ask Claude Desktop for the breakdown of a specific day or a whole itinerary to calculate meal limits. The tool returns the raw numbers, and your desktop agent formats them into a clean table for your expense report.

Map locations by ZIP code or city

The GSA Per Diem Rates toolset lets your local Claude Desktop app map complex geographic boundaries using `get_rates_by_zip` and `get_zip_mapping`. This prevents errors when a hotel sits on the border of two different counties with different rate structures. If you only have a city name, the `get_rates_by_city` and `get_rates_by_state` tools find the correct rates for that specific municipality in Claude Desktop. Your desktop agent handles the mapping behind the scenes, ensuring your travel requests comply with federal regulations.

Setup guide

Set up GSA Per Diem Rates 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 GSA Per Diem Rates 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 GSA Per Diem Rates 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 gsa-per-diem-rates-mcp.

json

{
  "mcpServers": {
    "gsa-per-diem-rates-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

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Common questions about GSA Per Diem Rates MCP in Claude Desktop

Open your `claude_desktop_config.json` file and add the server configuration under the `mcpServers` key. Once you save the file and restart Claude Desktop, the rate lookup tools will be ready to use in your chats.

No, this tool requires an active internet connection to fetch the latest government data. Claude Desktop calls the live API to ensure your lodging and meal rates are completely accurate for the current fiscal year.

Yes, it works on both Windows and macOS. You just need to add the server to your local config file, and Claude Desktop will run the tools as a background process.

The server uses `get_zip_mapping` to resolve specific ZIP codes to their official GSA city definitions. This ensures you get the exact rate for the specific neighborhood where your hotel is located.

Yes. The server only handles location names, ZIP codes, and fiscal years to fetch the rates. Your local Claude Desktop client communicates directly with the GSA API, meaning no personal travel itineraries or employee details are logged or stored.

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