GSA Per Diem

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "gsa-per-diem": {
      "type": "http",
      "url": "https://gsa-perdiem.1102tools.com/mcp"
    }
  }
}

7 tools

• get_data_status

  Report which fiscal years are bundled, their GSA source files, and which tools call the GSA API. ZIP, state, and M&IE lookups for bundled fiscal years are answered from GSA's published files with no network call. City requests with a supplied county for a bundled…

• lookup_city_perdiem

  Look up federal per diem rates for a city and state. Returns lodging rates (monthly breakdown for seasonal locations) and M&IE (meals and incidental expenses) for the specified fiscal year. state: 2-letter USPS code (e.g., 'DC', 'VA', 'MD', 'CA'). fiscal_year…

• lookup_zip_perdiem

  Look up federal per diem rates by ZIP code. Accepts 5-digit ZIPs or ZIP+4 (e.g., '02101' or '02101-1234'). Bundled fiscal years are answered from GSA's published ZIP file with no API call; other years use the GSA Per Diem API. GSA sets rates by county or…

• lookup_state_rates

  Get all Non-Standard Area (NSA) per diem rates for a state. Returns every city/county with rates above the standard rate in that state, plus the state's standard rate. Seasonal areas include their lodging rate for each month (lodging_by_month). Useful for comparing…

• get_mie_breakdown

  Get the M&IE (meals and incidental expenses) tier breakdown table. Returns all M&IE tiers with breakfast, lunch, dinner, incidental, and first/last day (75%) amounts, for showing the meal component of a per diem estimate. Bundled fiscal years come from GSA's…

• estimate_travel_cost

  Estimate total per diem cost for a trip. Calculates lodging + M&IE for the specified number of nights. First and last travel days use 75% M&IE per 41 CFR 301-11.20. travel_month: 3-letter abbreviation (Jan, Feb, ..., Dec). Every night is priced at that month's…

• compare_locations

  Compare per diem rates across multiple locations. locations: list of {"city": "...", "state": "XX"} dicts (optionally with "county"), max 25 entries. Returns rates sorted by max daily total (highest first). Ambiguous or unresolved cities are listed with their…

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