# HUD - US Department of Housing and Urban Development

**Canonical:** https://apis.io/providers/hud/  
**Website:** https://www.hud.gov/  
**APIs profiled:** 10

The U.S. Department of Housing and Urban Development (HUD) provides public REST APIs for fair housing data, Fair Market Rents, Income Limits, USPS ZIP code crosswalk files, Comprehensive Housing Affordability Strategy (CHAS) data, and housing counseling agency search. All HUD User dataset APIs require a free bearer token obtained from the HUD User portal; the Housing Counselor search API is publicly accessible without authentication.

## Kin Score — 39.2 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 39.2).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 64.1 |
| Governance | 9.8 |
| Contract Governance | 9.8 |
| Operational Transparency | 42.1 |
| Developer Ergonomics | 9.5 |
| Commercial Clarity | 28.9 |
| Access Clarity | 28.9 |

Regulatory layer — **Government & Public Sector**: 31.5 (matched via tags).

## Agent readiness — 46.4 (agent-native)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | na |
| Error Semantics | verified |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | na |

## Access

Free · Open access — onboarding: open, pricing: free, trial: no (confidence: high).

## APIs (10)

- **HUD User Fair Market Rents API** — Provides Fair Market Rent (FMR) data by state, county, and metropolitan area. Returns efficiency through four-bedroom rental rates used as the basis for Section 8 Housing Choice...
- **HUD User Income Limits API** — Returns HUD Income Limits at 30%, 50%, and 80% of Area Median Income (AMI) thresholds by geographic area. Used to determine eligibility for HUD housing assistance programs.
- **HUD User USPS ZIP Code Crosswalk API** — Maps USPS ZIP codes to and from census tracts, counties, CBSAs, congressional districts, and county subdivisions. Supports geographic lookups and crosswalk queries for housing a...
- **HUD User CHAS API** — Comprehensive Housing Affordability Strategy (CHAS) data provides custom tabulations of American Community Survey data on housing needs at national, state, county, and municipal...
- **HUD Housing Counselor Search API** — Search for HUD-approved housing counseling agencies by name, city, state, or geographic coordinates. Returns agency contact information and services offered. No API key required.
- **HUD - US Department of Housing and Urban Development CHAS API** — Comprehensive Housing Affordability Strategy data
- **HUD - US Department of Housing and Urban Development Fair Market Rents API** — Fair Market Rent data by geography
- **HUD - US Department of Housing and Urban Development Housing Counseling API** — HUD-approved housing counseling agency search
- **HUD - US Department of Housing and Urban Development Income Limits API** — Area Median Income limits by geography
- **HUD - US Department of Housing and Urban Development ZIP Code Crosswalk API** — ZIP code to geographic area crosswalk queries

## Agentic access (1)

- **Hud Agentic Access** — 8 operations

## Security (2)

- **Hud Authentication** — http · 1 scheme
- **Hud Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Plans (1)

- **Hud Plans Pricing**

## Tags

Housing, Government, Fair Market Rent, Mortgage, Community Development, Public Housing, Section 8, Income Limits

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/hud/). Scores are computed from the provider's own public artifacts under a published rubric.