Federal Housing Finance Agency (FHFA)
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.
More than an index entry, but the surface is still mostly links rather than artifacts — the cohort most likely to move a full band from modest, well-targeted work.
API Evangelist profiles Federal Housing Finance Agency (FHFA) the way a machine reads it — 10 machine-readable artifacts across 5 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Federal Housing Finance Agency (FHFA) scores 28.2/100 (emerging), with a separate agent-readiness read of 7/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Federal Housing Finance Agency (FHFA)
Each block below is one kind of artifact we hold for Federal Housing Finance Agency (FHFA). For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 5
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
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...
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Fhfa Plans Pricing
PLANSRate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Fhfa Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Fhfa Finops
FINOPSSemantic Vocabularies 1
JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.
JSON-LD contexts and semantic vocabularies used across these APIs.
Fhfa Context
JSON-LDSecurity Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Every other property we hold for Federal Housing Finance Agency (FHFA) — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Documentation 1
Reference material describing how the API behaves
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 1
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 2
Properties that don't map to a standard resource type
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