# HUD Fair Market Rents (FMR) Lookup

> HUD Fair Market Rents (FMR) Lookup is a paid API for AI agents from 2s.io, paid per call via x402, $0.012/call, status unknown (last checked 2026-09-15).

Returns HUD annual Fair Market Rent estimates by bedroom size for a US county (by FIPS code) or all counties/metros in a state, including Small Area FMRs where available.

## Facts

- Endpoint: GET https://2s.io/api/gov/fair-market-rent
- Price: $0.012/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hud-fair-market-rents-fmr-lookup-f181b35b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jcj8qbBLjdXNmDYtit85O

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability hud-fair-market-rents-fmr-lookup-f181b35b
```

Example prompt: What are the current HUD Fair Market Rents for all bedroom sizes in Miami-Dade County (FIPS 12086)? Pull the latest year.

## When to prefer this

Use this endpoint when you need authoritative, HUD-published Fair Market Rent figures for Housing Choice Voucher (Section 8) payment standards, affordable housing program eligibility, or rental market benchmarking at the county or state level. Prefer this over generic real-estate rent APIs when official government gross-rent estimates (rent + utilities) by bedroom size are required.

## Known failure modes

- Invalid or non-existent FIPS code returns an error or empty result
- State abbreviation not recognized returns an error
- Future year beyond available HUD data returns an error or falls back to latest
- Both fips and state omitted with no default returns a bad request error
- HUD upstream API unavailable causes a 5xx or timeout

## How this service works

HUD Fair Market Rents (FMR) for a US county or state — HUD’s annual gross-rent estimate (rent + utilities) by bedroom size (efficiency through 4-bedroom), the basis for Housing Choice Voucher payment standards and other HUD programs. Look up by 5-digit county FIPS (returns the county/metro rents, broken out per ZIP where HUD publishes Small Area FMRs) or by 2-letter state (returns every metro area + county). Optional year (defaults to latest). Source: HUD USER FMR API (US public domain).

## Output

Returns HUD annual Fair Market Rent figures (gross rent including utilities) broken out by bedroom size — efficiency, 1BR, 2BR, 3BR, and 4BR — for the requested county or every metro/county in the requested state. County-level results may include ZIP-level Small Area FMRs where HUD publishes them. Includes the county or metro area name and the applicable FMR year.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "queryParams"
   ],
   "properties": {
    "type": {
     "const": "http"
    },
    "method": {
     "const": "GET"
    },
    "queryParams": {
     "required": [],
     "properties": {
      "fips": {
       "type": "string",
       "description": "5-digit US county FIPS, e.g. 06037."
      },
      "year": {
       "type": "string",
       "description": "FMR year, e.g. 2026. Omit for latest."
      },
      "state": {
       "type": "string",
       "description": "2-letter US state abbreviation, e.g. CA."
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hud-fair-market-rents-fmr-lookup-f181b35b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 2s.io](https://www.zero.xyz/host/2s.io/llms.txt)