Fair market rent data for AI assistants and developers: MCP server

Add it to your AI assistant

Server URL (Streamable HTTP, no key, read-only):

https://multifamily.today/mcp

Claude (claude.ai and the desktop app): Settings, then Connectors, then Add custom connector. Paste the URL and save. No sign-in is needed.
ChatGPT: Settings, then Apps and Connectors. Turn on Developer mode under Advanced, choose Create, paste the URL and set authentication to none.
Grok: grok.com, then Connectors, then New connector, then Custom. Paste the URL.
Perplexity: Settings, then Connectors, then Add custom connector, then MCP. Paste the URL and choose no authentication.
Mistral Le Chat: Intelligence, then Connectors, then Add connector, then Custom MCP connector. Paste the URL.

Claude Code:

claude mcp add --transport http multifamily-today https://multifamily.today/mcp

Cursor (~/.cursor/mcp.json) and other clients that read mcpServers:

{
  "mcpServers": {
    "multifamily-today": {
      "url": "https://multifamily.today/mcp"
    }
  }
}

VS Code (.vscode/mcp.json):

{
  "servers": {
    "multifamily-today": {
      "type": "http",
      "url": "https://multifamily.today/mcp"
    }
  }
}

Gemini CLI (~/.gemini/settings.json):

{
  "mcpServers": {
    "multifamily-today": {
      "httpUrl": "https://multifamily.today/mcp"
    }
  }
}

Menu names change as the apps update. If a step has moved, look for "connectors" or "MCP" in the app's settings.

Tools

Tool	What it returns	Try asking
`get_fmr_by_county`	FY 2027 Fair Market Rents for a county or New England town, studio to 4 bedrooms, with one- and five-year change and the 2-bedroom history back to FY 2017.	What is the fair market rent for a 2-bedroom in Travis County, Texas?
`get_fmr_by_zip`	FY 2027 Small Area Fair Market Rents for a ZIP code, with the area-wide FMR beside them.	What is the Section 8 rent limit for a 3-bedroom in ZIP 30318?
`get_state_fmr_summary`	A state's or the nation's median, lowest and highest 2-bedroom FMR and the places that rose or fell most.	Which Florida counties saw fair market rents fall this year?
`compare_fmr`	Side-by-side FMRs for 2 to 10 counties, sorted by the bedroom count you choose.	Compare 2-bedroom fair market rents in Harris, Dallas and Bexar counties.

Discovery file: /.well-known/mcp.json. For bulk use, the full county and ZIP files are free CSV and JSON downloads on Data downloads and methods.

License and attribution

HUD data is public domain. The compilation is CC BY 4.0: credit "Data: Multifamily Today (multifamily.today)" with a link. Multifamily Today is published by Janover Capital LLC and is not affiliated with HUD. Nothing returned is a rent appraisal or a loan offer.

Questions

Is there a cost or an API key?

No. The server is free, read-only and needs no key or sign-in. Please cite the multifamily.today page or the HUD source that comes back with each answer.

Where does the data come from?

HUD USER: the FY 2027 Fair Market Rent and Small Area FMR files (Federal Register 91 FR 56156, effective October 1, 2026) and the FY 2017 to FY 2026 county files. The server reads the same files as the pages on this site.

Is a fair market rent what a unit will rent for?

Not necessarily. FMRs are HUD's estimate of gross rent (rent plus tenant-paid utilities) for a typical unit, set for the voucher program. Market asking rents can be higher or lower.

Questions or a data error: hello@multifamily.today. Privacy and terms.

HUD fair market rents as an MCP server

Add it to your AI assistant

Tools

License and attribution

Questions

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