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GSA Per Diem

GSA Per Diem is an MCP server that adds tools to AI assistants such as Claude Desktop, Claude Code and Cursor. GSA Per Diem access readiness, lodging, and meals and incidental expense rates. It has 27 GitHub stars, is released under the MIT license and runs locally with uvx gsa-perdiem-mcp.

github.com/1102tools-dev/federal-contracting-mcps (opens in a new tab)

Data as of from the GitHub API and the official MCP registry; description from the project's repository. Report an error

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Install GSA Per Diem

Generated from the server's MCP registry entry. Replace your-value with your own values.

Claude Desktop

claude_desktop_config.json
{
  "mcpServers": {
    "gsa-per-diem": {
      "command": "uvx",
      "args": [
        "gsa-perdiem-mcp"
      ],
      "env": {
        "PERDIEM_API_KEY": "your-value"
      }
    }
  }
}

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

Claude Code

claude mcp add --env PERDIEM_API_KEY=your-value --transport stdio gsa-per-diem -- uvx gsa-perdiem-mcp

Cursor

.cursor/mcp.json
{
  "mcpServers": {
    "gsa-per-diem": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "gsa-perdiem-mcp"
      ],
      "env": {
        "PERDIEM_API_KEY": "your-value"
      }
    }
  }
}

Project file; use ~/.cursor/mcp.json to enable it in every project.

VS Code

.vscode/mcp.json
{
  "inputs": [
    {
      "type": "promptString",
      "id": "perdiem_api_key",
      "description": "PERDIEM_API_KEY",
      "password": true
    }
  ],
  "servers": {
    "gsa-per-diem": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "gsa-perdiem-mcp"
      ],
      "env": {
        "PERDIEM_API_KEY": "${input:perdiem_api_key}"
      }
    }
  }
}

Claude Code (remote)

claude mcp add --transport http gsa-per-diem "https://gsa-perdiem.1102tools.com/mcp"

The same server is also hosted as a remote MCP endpoint, so nothing runs on your machine.

Config formats checked against the official docs on Oct 7, 2026: modelcontextprotocol.io (opens in a new tab), code.claude.com (opens in a new tab), cursor.com (opens in a new tab), code.visualstudio.com (opens in a new tab).

Environment variables

Variables the server reads at startup.

NameRequiredDescription
PERDIEM_API_KEYsecretNoFree api.data.gov key; required only for city names bundled data can't place, or unbundled fiscal years. Bundled city-plus-county lookups, estimates…

About GSA Per Diem

Free, open-source MCP server for the GSA Per Diem Rates API. Federal travel lodging and M&IE rates for IGCEs and travel cost estimation.

  • mcp
  • model-context-protocol
  • sam-gov
  • usaspending
  • federal-contracting
  • federal-data
  • govcon
  • mcp-server
  • acquisition
  • federal-acquisition

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FAQ

GSA Per Diem FAQ

Still curious? Email info@appsgit.com.

How do I install the GSA Per Diem MCP server?

Add the command uvx gsa-perdiem-mcp to your MCP client: put it in claude_desktop_config.json for Claude Desktop, run claude mcp add for Claude Code, or add it to .cursor/mcp.json (Cursor) or .vscode/mcp.json (VS Code). The snippets on this page are ready to paste.

Is GSA Per Diem free?

The server is open source under the MIT license, so running it is free. It needs credentials (PERDIEM_API_KEY) for the service it connects to, which may require a paid account.

Is GSA Per Diem actively maintained?

The most recent commit was on Oct 25, 2026. The latest release is v1.0.34, published Oct 21, 2026. appsgit only lists MCP servers with a commit in the last six months.