# Federal Housing Finance Agency (FHFA)

**Canonical:** https://apis.io/providers/fhfa/  
**Website:** https://www.fhfa.gov  
**APIs profiled:** 5

The Federal Housing Finance Agency (FHFA) is an independent federal regulator established in 2008 that supervises Fannie Mae, Freddie Mac, and the Federal Home Loan Bank System. FHFA provides publicly accessible data APIs and datasets covering house price indexes (FHFA HPI), mortgage market surveys, conforming loan limits, National Mortgage Database (NMDB) aggregate statistics, Public Use Databases (PUDB) for Fannie Mae and Freddie Mac, Uniform Appraisal Dataset (UAD) statistics, and GSE performance and duty-to-serve data. Data is available in CSV, JSON, XML, and Excel formats with open public access under FHFA's API Terms of Service.

## Kin Score — 25.0 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 25.0).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 15.5 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 26.3 |
| Developer Ergonomics | 11.9 |
| Commercial Clarity | 39.5 |
| Access Clarity | 39.5 |

Regulatory layer — **Government & Public Sector**: 27.8 (matched via tags).

## Agent readiness — 3.0 (human-only)

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

## Access

Open access — onboarding: open, pricing: unknown, trial: no (confidence: medium).

## APIs (5)

- **FHFA House Price Index (HPI) API** — The FHFA House Price Index (HPI) is a comprehensive, publicly available dataset measuring changes in single-family home values across all 50 states and over 400 American cities,...
- **FHFA National Mortgage Database (NMDB) API** — The National Mortgage Database (NMDB) is a nationally representative, longitudinal database of residential mortgages providing aggregate statistics on outstanding residential mo...
- **FHFA Enterprise Public Use Database (PUDB) API** — The FHFA Enterprise Public Use Database (PUDB) provides loan-level data on single-family and multifamily mortgages acquired by Fannie Mae and Freddie Mac, as well as data on Fed...
- **FHFA Conforming Loan Limits API** — FHFA publishes annual conforming loan limit (CLL) values establishing the maximum mortgage amounts that Fannie Mae and Freddie Mac may purchase. Data is available at the county ...
- **FHFA Uniform Appraisal Dataset (UAD) Aggregate Statistics API** — The FHFA Uniform Appraisal Dataset (UAD) Aggregate Statistics provide data on residential appraisals submitted to Fannie Mae and Freddie Mac, covering appraisal values, property...

## Security (1)

- **Fhfa Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Plans (1)

- **Fhfa Plans Pricing**

## Tags

Housing Finance, House Price Index, Mortgage, Government, GSE, Fannie Mae, Freddie Mac, Federal

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